Article

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• Roederer, Ian U., Pace, Andrew B., Placco, Vinicius M., Caldwell, Nelson, Koposov, Sergey E., Mateo, Mario, Olszewski, Edward W., and Walker, Matthew G. 2023. "Abundance Analysis of Stars at Large Radius in the Sextans Dwarf Spheroidal Galaxy." The Astrophysical Journal, 954 55. https://doi.org/10.3847/1538-4357/ace3c1. 2023
• Chandra, Vedant, Naidu, Rohan P., Conroy, Charlie, Bonaca, Ana, Zaritsky, Dennis, Cargile, Phillip A., Caldwell, Nelson, Johnson, Benjamin D., Han, Jiwon Jesse, and Ting, Yuan-Sen. 2023. "Discovery of the Magellanic Stellar Stream Out to 100 kpc." The Astrophysical Journal, 956 110. https://doi.org/10.3847/1538-4357/acf7bf. 2023
• Afanasiev, Anton V., Chilingarian, Igor V., Grishin, Kirill A., Makarov, Dmitry, Makarova, Lidia, Fabricant, Daniel, Caldwell, Nelson, and Moran, Sean. 2023. "KDG 64: a large dwarf spheroidal or a small ultradiffuse satellite of Messier 81." Monthly Notices of the Royal Astronomical Society, 520 6312–6321. https://doi.org/10.1093/mnras/stad559. 2023
• Walker, Matthew G., Caldwell, Nelson, Mateo, Mario, Olszewski, Edward W., Pace, Andrew B., Bailey, John I., Koposov, Sergey E., and Roederer, Ian U. 2023. "Magellan/M2FS and MMT/Hectochelle Spectroscopy of Dwarf Galaxies and Faint Star Clusters within the Galactic Halo." The Astrophysical Journal Supplement Series, 268 19. https://doi.org/10.3847/1538-4365/acdd79. 2023
• Hughes, Allison K., Sand, David J., Seth, Anil, Strader, Jay, Lidman, Chris, Voggel, Karina, Dumont, Antoine, Crnojević, Denija, Mateo, Mario, Caldwell, Nelson, Forbes, Duncan A., Pearson, Sarah, Guhathakurta, Puragra, and Toloba, Elisa. 2023. "New Velocity Measurements of NGC 5128 Globular Clusters Out to 130 kpc: Outer Halo Kinematics, Substructure, and Dynamics." The Astrophysical Journal, 947 34. https://doi.org/10.3847/1538-4357/acbf43. 2023
• Raymond, John C., Seok, Ji Yeon, Koo, Bon-Chul, Chilingarian, Igor V., Grishin, Kirill, Caldwell, Nelson, Xie, Min, and Fesen, Robert. 2023. "The Cygnus Loop: Shock Precursors and Electron-Ion Equilibration." The Astrophysical Journal, 954 34. https://doi.org/10.3847/1538-4357/ace692. 2023
• Pace, Andrew B., Koposov, Sergey E., Walker, Matthew G., Caldwell, Nelson, Mateo, Mario, Olszewski, Edward W., Roederer, Ian U., Bailey, John I., Belokurov, Vasily, Kuehn, Kyler, Li, Ting S., and Zucker, Daniel B. 2023. "The kinematics, metallicities, and orbits of six recently discovered Galactic star clusters with Magellan/M2FS spectroscopy." Monthly Notices of the Royal Astronomical Society, 526 1075–1094. https://doi.org/10.1093/mnras/stad2760. 2023
• Bhattacharya, Souradeep, Arnaboldi, Magda, Hammer, Francois, Yang, Yanbin, Gerhard, Ortwin, Caldwell, Nelson, and Freeman, Kenneth C. 2023. "The survey of planetary nebulae in Andromeda (M 31) VI. Kinematics of M 31 inner-halo substructures and comparison with major-merger simulation predictions." Monthly Notices of the Royal Astronomical Society, 522 6010–6023. https://doi.org/10.1093/mnras/stad1378. 2023
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• Jones, Michael G., Sand, David J., Bellazzini, Michele, Spekkens, Kristine, Cannon, John M., Mutlu-Pakdil, Burçin, Karunakaran, Ananthan, Beccari, Giacomo, Magrini, Laura, Cresci, Giovanni, Inoue, John L., Fuson, Jackson, Adams, Elizabeth A. K., Battaglia, Giuseppina, Bennet, Paul, Crnojević, Denija, Caldwell, Nelson, Guhathakurta, Puragra, Haynes, Martha P., Muñoz, Ricardo R., Seth, Anil, Strader, Jay, Toloba, Elisa, and Zaritsky, Dennis. 2022. "AGC 226178 and NGVS 3543: Two Deceptive Dwarfs toward Virgo." The Astrophysical Journal, 926 L15. https://doi.org/10.3847/2041-8213/ac51dc. 2022
• Jones, Michael G., Sand, David J., Bellazzini, Michele, Spekkens, Kristine, Cannon, John M., Mutlu-Pakdil, Burçin, Karunakaran, Ananthan, Beccari, Giacomo, Magrini, Laura, Cresci, Giovanni, Inoue, John L., Fuson, Jackson, Adams, Elizabeth A. K., Battaglia, Giuseppina, Bennet, Paul, Crnojević, Denija, Caldwell, Nelson, Guhathakurta, Puragra, Haynes, Martha P., Muñoz, Ricardo R., Seth, Anil, Strader, Jay, Toloba, Elisa, and Zaritsky, Dennis. 2022. "AGC 226178 and NGVS 3543: Two Deceptive Dwarfs toward Virgo." The Astrophysical Journal, 926 L15. https://doi.org/10.3847/2041-8213/ac51dc. 2022
• Pechetti, Renuka, Seth, Anil, Kamann, Sebastian, Caldwell, Nelson, Strader, Jay, den Brok, Mark, Luetzgendorf, Nora, Neumayer, Nadine, and Voggel, Karina. 2022. "Detection of a 100,000 M _⊙ black hole in M31's Most Massive Globular Cluster: A Tidally Stripped Nucleus." The Astrophysical Journal, 924 48. https://doi.org/10.3847/1538-4357/ac339f. 2022
• Bennet, P., Sand, D. J., Crnojević, D., Weisz, D. R., Caldwell, Nelson, Guhathakurta, P., Hargis, J. R., Karunakaran, A., Mutlu-Pakdil, B., Olszewski, E., Salzer, J. J., Seth, A. C., Simon, J. D., Spekkens, K., Stark, D. P., Strader, J., Tollerud, E. J., Toloba, E., and Willman, B. 2022. "Hubble Space Telescope Imaging of Isolated Local Volume Dwarfs GALFA Dw3 and Dw4." The Astrophysical Journal, 924 98. https://doi.org/10.3847/1538-4357/ac356c. 2022
• Mutlu-Pakdil, Burçin, Sand, David J., Crnojević, Denija, Jones, Michael G., Caldwell, Nelson, Guhathakurta, Puragra, Seth, Anil C., Simon, Joshua D., Spekkens, Kristine, Strader, Jay, and Toloba, Elisa. 2022. "Hubble Space Telescope Observations of NGC 253 Dwarf Satellites: Three Ultra-faint Dwarf Galaxies." The Astrophysical Journal, 926 77. https://doi.org/10.3847/1538-4357/ac4418. 2022
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• Bhattacharya, Souradeep, Arnaboldi, Magda, Caldwell, Nelson, Gerhard, Ortwin, Kobayashi, Chiaki, Hartke, Johanna, Freeman, Kenneth C., McConnachie, Alan W., and Guhathakurta, Puragra. 2022. "The survey of planetary nebulae in Andromeda (M31) - IV. Radial oxygen and argon abundance gradients of the thin and thicker disc." Monthly Notices of the Royal Astronomical Society, 517 2343–2359. https://doi.org/10.1093/mnras/stac2703. 2022
• Arnaboldi, Magda, Bhattacharya, Souradeep, Gerhard, Ortwin, Kobayashi, Chiaki, Freeman, Kenneth C., Caldwell, Nelson, Hartke, Johanna, McConnachie, Alan, and Guhathakurta, Puragra. 2022. "The survey of planetary nebulae in Andromeda (M31). V. Chemical enrichment of the thin and thicker discs of Andromeda: Oxygen to argon abundance ratios for planetary nebulae and HII regions." Astronomy and Astrophysics, 666 A109. https://doi.org/10.1051/0004-6361/202244258. 2022
• Bellazzini, Michele, Magrini, Laura, Jones, Michael G., Sand, David J., Beccari, Giacomo, Cresci, Giovanni, Spekkens, Kristine, Karunakaran, Ananthan, Adams, Elizabeth A. K., Zaritsky, Dennis, Battaglia, Giuseppina, Seth, Anil, Cannon, John M., Fuson, Jackson, Inoue, John L., Mutlu-Pakdil, Burçin, Guhathakurta, Puragra, Muñoz, Ricardo R., Bennet, Paul, Crnojević, Denija, Caldwell, Nelson, Strader, Jay, and Toloba, Elisa. 2022. "Young, Blue, and Isolated Stellar Systems in the Virgo Cluster. I. 2D Optical Spectroscopy." The Astrophysical Journal, 935 50. https://doi.org/10.3847/1538-4357/ac7c6d. 2022
• Jones, Michael G., Sand, David J., Bellazzini, Michele, Spekkens, Kristine, Karunakaran, Ananthan, Adams, Elizabeth A. K., Battaglia, Giuseppina, Beccari, Giacomo, Bennet, Paul, Cannon, John M., Cresci, Giovanni, Crnojević, Denija, Caldwell, Nelson, Fuson, Jackson, Guhathakurta, Puragra, Haynes, Martha P., Inoue, John L., Magrini, Laura, Muñoz, Ricardo R., Mutlu-Pakdil, Burçin, Seth, Anil, Strader, Jay, Toloba, Elisa, and Zaritsky, Dennis. 2022. "Young, Blue, and Isolated Stellar Systems in the Virgo Cluster. II. A New Class of Stellar System." The Astrophysical Journal, 935 51. https://doi.org/10.3847/1538-4357/ac7c6c. 2022
• Carter, Courtney, Conroy, Charlie, Zaritsky, Dennis, Ting, Yuan-Sen, Bonaca, Ana, Naidu, Rohan P., Johnson, Benjamin D., Cargile, Phillip A., Caldwell, Nelson, Speagle, Joshua, and Han, Jiwon Jesse. 2021. "Ancient Very Metal-poor Stars Associated with the Galactic Disk in the H3 Survey." The Astrophysical Journal, 908 208. https://doi.org/10.3847/1538-4357/abcda4. 2021
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• Zaritsky, Dennis, Conroy, Charlie, Naidu, Rohan P., Cargile, Phillip A., Putman, Mary, Besla, Gurtina, Bonaca, Ana, Caldwell, Nelson, Han, Jiwon Jesse, Johnson, Benjamin D., Speagle, Joshua S., and Ting, Yuan-Sen. 2020. "Discovery of Magellanic Stellar Debris in the H3 Survey." The Astrophysical Journal, 905 L3. https://doi.org/10.3847/2041-8213/abcb83. 2020
• Naidu, Rohan P., Conroy, Charlie, Bonaca, Ana, Johnson, Benjamin D., Ting, Yuan-Sen, Caldwell, Nelson, Zaritsky, Dennis, and Cargile, Phillip A. 2020. "Evidence from the H3 Survey That the Stellar Halo Is Entirely Comprised of Substructure." The Astrophysical Journal, 901 48. https://doi.org/10.3847/1538-4357/abaef4. 2020
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• Girardi, Léo, Boyer, Martha L., Johnson, L. Clifton, Dalcanton, Julianne J., Rosenfield, Philip, Seth, Anil C., Skillman, Evan D., Weisz, Daniel R., Williams, Benjamin F., Bhattacharya, Antara Raaghavi, Bressan, Alessandro, Caldwell, Nelson, Chen, Yang, Dolphin, Andrew E., Fouesneau, Morgan, Goldman, Steven, Guhathakurta, Puragra, Marigo, Paola, Mukherjee, Sagnick, Pastorelli, Giada, Quirk, Amanda, Soraisam, Monika, and Trabucchi, Michele. 2020. "PHAT XX. AGB Stars and Other Cool Giants in M31 Star Clusters." The Astrophysical Journal, 901 19. https://doi.org/10.3847/1538-4357/abad3a. 2020
• Raymond, John C., Caldwell, Nelson, Fesen, R. A., Weil, K. E., Boumis, P., di Cicco, D., Mittelman, D., and Walker, S. 2020. "Rapid Postshock Cooling and Pressure-driven Shell-phase Evolution of the Galactic Halo SNR G70.0─21.5." The Astrophysical Journal, 888 90. https://doi.org/10.3847/1538-4357/ab5e84. 2020
• Bonaca, Ana, Conroy, Charlie, Cargile, Phillip A., Naidu, Rohan P., Johnson, Benjamin D., Zaritsky, Dennis, Ting, Yuan-Sen, Caldwell, Nelson, Han, Jiwon Jesse, and van Dokkum, Pieter. 2020. "Timing the Early Assembly of the Milky Way with the H3 Survey." The Astrophysical Journal, 897 L18. https://doi.org/10.3847/2041-8213/ab9caa. 2020
• Johnson, Christian I., Caldwell, Nelson, Michael Rich, R., Mateo, Mario, and Bailey, John I. 2019. "Light element discontinuities suggest an early termination of star formation in the globular cluster NGC 6402 (M14)." Monthly Notices of the Royal Astronomical Society, 485 4311–4329. https://doi.org/10.1093/mnras/stz587. 2019
• Conroy, Charlie, Bonaca, Ana, Cargile, Phillip, Johnson, Benjamin D., Caldwell, Nelson, Naidu, Rohan P., Zaritsky, Dennis, Fabricant, Daniel, Moran, Sean, Rhee, Jaehyon, Szentgyorgyi, Andrew, Berlind, Perry, Calkins, Michael L., Kattner, ShiAnne, and Ly, Chun. 2019. "Mapping the Stellar Halo with the H3 Spectroscopic Survey." The Astrophysical Journal, 883 107. https://doi.org/10.3847/1538-4357/ab38b8. 2019
• Conroy, Charlie, Naidu, Rohan P., Zaritsky, Dennis, Bonaca, Ana, Cargile, Phillip, Johnson, Benjamin D., and Caldwell, Nelson. 2019. "Resolving the Metallicity Distribution of the Stellar Halo with the H3 Survey." The Astrophysical Journal, 887 237. https://doi.org/10.3847/1538-4357/ab5710. 2019
• Mutlu-Pakdil, Burçin, Sand, David J., Walker, Matthew G., Caldwell, Nelson, Carlin, Jeffrey L., Collins, Michelle L., Crnojević, Denija, Mateo, Mario, Olszewski, Edward W., Seth, Anil C., Strader, Jay, Willman, Beth, and Zaritsky, Dennis. 2019. "Signatures of Tidal Disruption in Ultra-faint Dwarf Galaxies: A Combined HST, Gaia, and MMT/Hectochelle Study of Leo V." The Astrophysical Journal, 885 53. https://doi.org/10.3847/1538-4357/ab45ec. 2019
• Crnojević, D., Sand, D. J., Bennet, P., Pasetto, S., Spekkens, K., Caldwell, Nelson, Guhathakurta, P., McLeod, Brian A., Seth, A., Simon, J. D., Strader, J., and Toloba, E. 2019. "The Faint End of the Centaurus A Satellite Luminosity Function." The Astrophysical Journal, 872 80. https://doi.org/10.3847/1538-4357/aafbe7. 2019
• Bhattacharya, Souradeep, Arnaboldi, Magda, Hartke, Johanna, Gerhard, Ortwin, Comte, Valentin, McConnachie, Alan, and Caldwell, Nelson. 2019. "The survey of planetary nebulae in Andromeda (M 31). I. Imaging the disc and halo with MegaCam at the CFHT." Astronomy and Astrophysics, 624. https://doi.org/10.1051/0004-6361/201834579. 2019
• Bhattacharya, Souradeep, Arnaboldi, Magda, Caldwell, Nelson, Gerhard, Ortwin, Blaña, Matías, McConnachie, Alan, Hartke, Johanna, Guhathakurta, Puragra, Pulsoni, Claudia, and Freeman, Kenneth C. 2019. "The survey of planetary nebulae in Andromeda (M 31). II. Age-velocity dispersion relation in the disc from planetary nebulae." Astronomy and Astrophysics, 631 A56. https://doi.org/10.1051/0004-6361/201935898. 2019
• Mutlu-Pakdil, Burçin, Sand, David J., Carlin, Jeffrey L., Spekkens, Kristine, Caldwell, Nelson, Crnojevic, Denija, Hughes, Allison K., Willman, Beth, and Zaritsky, Dennis. 2018. "A Deeper Look at the New Milky Way Satellites: Sagittarius II, Reticulum II, Phoenix II, and Tucana III." The Astrophysical Journal, 863 25. https://doi.org/10.3847/1538-4357/aacd0e. 2018
• Johnson, Christian I., Rich, R. Michael, Caldwell, Nelson, Mateo, Mario, Bailey, John I., III, Olszewski, Edward W., and Walker, Matthew G. 2018. "Exploring the Chemical Composition and Double Horizontal Branch of the Bulge Globular Cluster NGC 6569." The Astronomical Journal, 155 71. https://doi.org/10.3847/1538-3881/aaa294. 2018
• Johnson, Christian I., Caldwell, Nelson, Rich, R. Michael, Mateo, Mario, Bailey, John I., III, Clarkson, William I., Olszewski, Edward W., and Walker, Matthew G. 2017. "A Chemical Composition Survey of the Iron-complex Globular Cluster NGC 6273 (M19)." The Astrophysical Journal, 836 168. https://doi.org/10.3847/1538-4357/836/2/168. 2017
• Mikolajewska, Joanna, Shara, Michael M., Caldwell, Nelson, Ilkiewicz, Krystian, and Zurek, David. 2017. "A survey of the Local Group of galaxies for symbiotic binary stars - I. First detection of symbiotic stars in M33." Monthly Notices of the Royal Astronomical Society, 465 1699–1710. https://doi.org/10.1093/mnras/stw2937. 2017
• Johnson, Christian I., Caldwell, Nelson, Rich, R. Michael, Mateo, Mario, Bailey, John I., III, Olszewski, Edward W., and Walker, Matthew G. 2017. "Chemical Complexity in the Eu-enhanced Monometallic Globular NGC 5986." The Astrophysical Journal, 842 24. https://doi.org/10.3847/1538-4357/aa7414. 2017
• Caldwell, Nelson, Walker, Matthew G., Mateo, Mario, Olszewski, Edward W., Koposov, Sergey, Belokurov, Vasily, Torrealba, Gabriel, Geringer-Sameth, Alex, and Johnson, Christian I. 2017. "Crater 2: An Extremely Cold Dark Matter Halo." The Astrophysical Journal, 839 20. https://doi.org/10.3847/1538-4357/aa688e. 2017
• Caldwell, Nelson, Walker, Matthew G., Mateo, Mario, Olszewski, Edward W., Koposov, Sergey, Belokurov, Vasily, Torrealba, Gabriel, Geringer-Sameth, Alex, and Johnson, Christian I. 2017. "Erratum: Crater 2: An Extremely Cold Dark Matter Halo (2017, ApJ, 839, 20)." The Astrophysical Journal, 841 66. https://doi.org/10.3847/1538-4357/aa7208. 2017
• Sand, D. J., Seth, A. C., Crnojević, D., Spekkens, K., Strader, J., Adams, E. A. K., Caldwell, Nelson, Guhathakurta, P., Kenney, J., Randall, Scott, Simon, J. D., Toloba, E., and Willman, B. 2017. "Hubble Space Telescope Imaging of the Ultra-compact High Velocity Cloud AGC 226067: A Stripped Remnant in the Virgo Cluster." The Astrophysical Journal, 843 134. https://doi.org/10.3847/1538-4357/aa7557. 2017
• Nguyen, Dieu D., Seth, Anil C., den Brok, Mark, Neumayer, Nadine, Cappellari, Michele, Barth, Aaron J., Caldwell, Nelson, Williams, Benjamin F., and Binder, Breanna. 2017. "Improved Dynamical Constraints on the Mass of the Central Black Hole in NGC 404." The Astrophysical Journal, 836 237. https://doi.org/10.3847/1538-4357/aa5cb4. 2017
• Johnson, Christian I., Caldwell, Nelson, Rich, R. Michael, and Walker, Matthew G. 2017. "Light and Heavy Element Abundance Variations in the Outer Halo Globular Cluster NGC 6229." The Astronomical Journal, 154 155. https://doi.org/10.3847/1538-3881/aa86ac. 2017
• Caldwell, Nelson, Strader, Jay, Sand, David J., Willman, Beth, and Seth, Anil C. 2017. "The Faint Globular Cluster in the Dwarf Galaxy Andromeda I." Publications of the Astronomical Society of Australia, 34 e039. https://doi.org/10.1017/pasa.2017.35. 2017
• Toloba, Elisa, Sand, David J., Spekkens, Kristine, Crnojević, Denija, Simon, Joshua D., Guhathakurta, Puragra, Strader, Jay, Caldwell, Nelson, McLeod, Brian A., and Seth, Anil C. 2016. "A Tidally Disrupting Dwarf Galaxy in the Halo of NGC 253." The Astrophysical Journal Letters, 816 L5. https://doi.org/10.3847/2041-8205/816/1/L5. 2016
• Hargis, Jonathan R., Kimmig, Brian, Willman, Beth, Caldwell, Nelson, Walker, Matthew G., Strader, Jay, Sand, David J., Grillmair, Carl J., and Yoon, Joo Heon. 2016. "Evidence That Hydra I is a Tidally Disrupting Milky Way Dwarf Galaxy." The Astrophysical Journal, 818 39. https://doi.org/10.3847/0004-637X/818/1/39. 2016
• Sakari, Charli M., Shetrone, Matthew D., Schiavon, Ricardo P., Bizyaev, Dmitry, Allende Prieto, Carlos, Beers, Timothy C., Caldwell, Nelson, García-Hernández, D. A., Lucatello, Sara, Majewski, Steven, O'Connell, Robert W., Pan, Kaike, and Strader, Jay. 2016. "Infrared High-resolution Integrated Light Spectral Analyses of M31 Globular Clusters from APOGEE." The Astrophysical Journal, 829 116. https://doi.org/10.3847/0004-637X/829/2/116. 2016
• Johnson, Christian I., Caldwell, Nelson, Rich, R. Michael, Pilachowski, Catherine A., and Hsyu, Tiffany. 2016. "The Chemical Composition of Red Giant Branch Stars in the Galactic Globular Clusters NGC 6342 and NGC 6366." The Astronomical Journal, 152 21. https://doi.org/10.3847/0004-6256/152/1/21. 2016
• The Chemical Composition of Red Giant Branch Stars in the Galactic Globular Clusters NGC 6342 and NGC 6366.  The Astronomical Journal.  152:21. 2016
• Crnojević, D., Sand, D. J., Spekkens, K., Caldwell, Nelson, Guhathakurta, P., McLeod, Brian A., Seth, A., Simon, J. D., Strader, J., and Toloba, E. 2016. "The Extended Halo of Centaurus A: Uncovering Satellites, Streams, and Substructures." The Astrophysical Journal, 823 19. https://doi.org/10.3847/0004-637X/823/1/19. 2016
• Shara, Michael M., Mikolajewska, Joanna, Caldwell, Nelson, Ilkiewicz, Krystian, Drozd, Katarzyna, and Zurek, David. 2016. "The first transition Wolf-Rayet WN/C star in M31." Monthly Notices of the Royal Astronomical Society, 455 3453–3457. https://doi.org/10.1093/mnras/stv2455. 2016
• Benetti, S., Chugai, N. N., Utrobin, V. P., Cappellaro, E., Patat, F., Pastorello, A., Turatto, M., Cupani, G., Neuhäuser, R., Caldwell, Nelson, Pignata, G., and Tomasella, L. 2016. "The spectacular evolution of Supernova 1996al over 15 yr: a low-energy explosion of a stripped massive star in a highly structured environment." Monthly Notices of the Royal Astronomical Society, 456 3296–3317. https://doi.org/10.1093/mnras/stv2811. 2016
• Sand, D. J., Crnojević, D., Bennet, P., Willman, B., Hargis, J., Strader, J., Olszewski, E., Tollerud, E. J., Simon, J. D., Caldwell, Nelson, Guhathakurta, P., James, B. L., Koposov, S., McLeod, Brian A., Morrell, N., Peacock, M., Salinas, R., Seth, A. C., Stark, D. P., and Toloba, E. 2015. "A Comprehensive Archival Search for Counterparts to Ultra-compact High-Velocity Clouds: Five Local Volume Dwarf Galaxies." The Astrophysical Journal, 806 95. https://doi.org/10.1088/0004-637X/806/1/95. 2015
• Pota, Vincenzo, Brodie, Jean P., Bridges, Terry, Strader, Jay, Romanowsky, Aaron J., Villaume, Alexa, Jennings, Zach, Faifer, Favio R., Pastorello, Nicola, Forbes, Duncan A., Campbell, Ainsley, Usher, Christopher, Foster, Caroline, Spitler, Lee R., Caldwell, Nelson, Forte, Juan C., Norris, Mark A., Zepf, Stephen E., Beasley, Michael A., Gebhardt, Karl, Hanes, David A., Sharples, Ray M., and Arnold, Jacob A. 2015. "A SLUGGS and Gemini/GMOS combined study of the elliptical galaxy M60: wide-field photometry and kinematics of the globular cluster system." Monthly Notices of the Royal Astronomical Society, 450 1962–1983. https://doi.org/10.1093/mnras/stv677. 2015
• Johnson, Christian I., Rich, R. Michael, Pilachowski, Catherine A., Caldwell, Nelson, Mateo, Mario, Bailey, John I., III, and Crane, Jeffrey D. 2015. "A Spectroscopic Analysis of the Galactic Globular Cluster NGC 6273 (M19)." The Astronomical Journal, 150 63. https://doi.org/10.1088/0004-6256/150/2/63. 2015
• Mikołajewska, Joanna, Caldwell, Nelson, Shara, Michael M., and Iłkiewicz, Krystian. 2015. "Characterization of the Most Luminous Star in M33: A Super Symbiotic Binary." The Astrophysical Journal Letters, 799 L16. https://doi.org/10.1088/2041-8205/799/2/L16. 2015
• Kimmig, Brian, Seth, Anil, Ivans, Inese I., Strader, Jay, Caldwell, Nelson, Anderton, Tim, and Gregersen, Dylan. 2015. "Measuring Consistent Masses for 25 Milky Way Globular Clusters." The Astronomical Journal, 149 53. https://doi.org/10.1088/0004-6256/149/2/53. 2015
• McLeod, Brian A., Geary, John, Conroy, Maureen, Fabricant, Daniel, Ordway, Mark, Szentgyorgyi, Andrew H., Amato, Stephen, Ashby, Matthew L. N., Caldwell, Nelson, Curley, Dylan, Gauron, Thomas, Holman, Matthew, Norton, Timothy, Pieri, Mario, Roll, John, Weaver, David, Zajac, Joseph, Palunas, Povilas, and Osip, David. 2015. "Megacam: A Wide-Field CCD Imager for the MMT and Magellan." Publications of the Astronomical Society of the Pacific, 127 366–382. https://doi.org/10.1086/680687. 2015
• Johnson, L. Clifton, Seth, Anil C., Dalcanton, Julianne J., Wallace, Matthew L., Simpson, Robert J., Lintott, Chris J., Kapadia, Amit, Skillman, Evan D., Caldwell, Nelson, Fouesneau, Morgan, Weisz, Daniel R., Williams, Benjamin F., Beerman, Lori C., Gouliermis, Dimitrios A., and Sarajedini, Ata. 2015. "PHAT Stellar Cluster Survey. II. Andromeda Project Cluster Catalog." The Astrophysical Journal, 802 127. https://doi.org/10.1088/0004-637X/802/2/127. 2015
• Sesar, Branimir, Bovy, Jo, Bernard, Edouard J., Caldwell, Nelson, Cohen, Judith G., Fouesneau, Morgan, Johnson, Christian I., Ness, Melissa, Ferguson, Annette M. N., Martin, Nicolas F., Price-Whelan, Adrian M., Rix, Hans-Walter, Schlafly, Edward F., Burgett, William S., Chambers, Kenneth C., Flewelling, Heather, Hodapp, Klaus W., Kaiser, Nick, Magnier, Eugene A., Platais, Imants, Tonry, John L., Waters, Christopher, and Wyse, Rosemary F. G. 2015. "The Nature and Orbit of the Ophiuchus Stream." The Astrophysical Journal, 809 59. https://doi.org/10.1088/0004-637X/809/1/59. 2015
• Zhang, Hong-Xin, Peng, Eric W., Côté, Patrick, Liu, Chengze, Ferrarese, Laura, Cuillandre, Jean-Charles, Caldwell, Nelson, Gwyn, Stephen D. J., Jordán, Andrés, Lançon, Ariane, Li, Biao, Muñoz, Roberto P., Puzia, Thomas H., Bekki, Kenji, Blakeslee, John P., Boselli, Alessandro, Drinkwater, Michael J., Duc, Pierre-Alain, Durrell, Patrick, Emsellem, Eric, Firth, Peter, and Sánchez-Janssen, Rubén. 2015. "The Next Generation Virgo Cluster Survey. VI. The Kinematics of Ultra-compact Dwarfs and Globular Clusters in M87." The Astrophysical Journal, 802 30. https://doi.org/10.1088/0004-637X/802/1/30. 2015
• Caldwell, Nelson, Strader, Jay, Romanowsky, Aaron J., Brodie, Jean P., Moore, Ben, Diemand, Jurg, and Martizzi, Davide. 2014. "A Globular Cluster toward M87 with a Radial Velocity < - 1000 km s-1: The First Hypervelocity Cluster." The Astrophysical Journal Letters, 787 L11. https://doi.org/10.1088/2041-8205/787/1/L11. 2014
• Crnojević, D., Sand, D. J., Caldwell, Nelson, Guhathakurta, P., McLeod, Brian A., Seth, A., Simon, J. D., Strader, J., and Toloba, E. 2014. "Discovery of a Close Pair of Faint Dwarf Galaxies in the Halo of Centaurus A." The Astrophysical Journal Letters, 795 L35. https://doi.org/10.1088/2041-8205/795/2/L35. 2014
• Sand, D. J., Crnojević, D., Strader, J., Toloba, E., Simon, J. D., Caldwell, Nelson, Guhathakurta, P., McLeod, Brian A., and Seth, A. C. 2014. "Discovery of a New Faint Dwarf Galaxy Associated with NGC 253." The Astrophysical Journal Letters, 793 L7. https://doi.org/10.1088/2041-8205/793/1/L7. 2014
• Medina, Amber A., Raymond, John C., Edgar, Richard J., Caldwell, Nelson, Fesen, Robert A., and Milisavljevic, Dan. 2014. "Electron-Ion Equilibrium and Shock Precursors in the Northeast Limb of the Cygnus Loop." The Astrophysical Journal, 791 30. https://doi.org/10.1088/0004-637X/791/1/30. 2014
• Mikołajewska, Joanna, Caldwell, Nelson, and Shara, Michael M. 2014. "First detection and characterization of symbiotic stars in M31." Monthly Notices of the Royal Astronomical Society, 444 586–599. https://doi.org/10.1093/mnras/stu1480. 2014
• Veyette, Mark J., Williams, Benjamin F., Dalcanton, Julianne J., Balick, Bruce, Caldwell, Nelson, Fouesneau, Morgan, Girardi, Léo, Gordon, Karl D., Kalirai, Jason, Rosenfield, Philip, and Seth, Anil C. 2014. "Panchromatic Hubble Andromeda Treasury. IX. A Photometric Survey of Planetary Nebulae in M31." The Astrophysical Journal, 792 121. https://doi.org/10.1088/0004-637X/792/2/121. 2014
• Bochanski, John J., Willman, Beth, Caldwell, Nelson, Sanderson, Robyn, West, Andrew A., Strader, Jay, and Brown, Warren. 2014. "The Most Distant Stars in the Milky Way." The Astrophysical Journal Letters, 790 L5. https://doi.org/10.1088/2041-8205/790/1/L5. 2014
• Zhu, Ling, Long, R. J., Mao, Shude, Peng, Eric W., Liu, Chengze, Caldwell, Nelson, Li, Biao, Blakeslee, John P., Côté, Patrick, Cuillandre, Jean-Charles, Durrell, Patrick, Emsellem, Eric, Ferrarese, Laura, Gwyn, Stephen, Jordán, Andrés, Lançon, Ariane, Mei, Simona, Muñoz, Roberto, and Puzia, Thomas. 2014. "The Next Generation Virgo Cluster Survey. V. Modeling the Dynamics of M87 with the Made-to- measure Method." The Astrophysical Journal, 792 59. https://doi.org/10.1088/0004-637X/792/1/59. 2014
• Fouesneau, Morgan, Johnson, L. Clifton, Weisz, Daniel R., Dalcanton, Julianne J., Bell, Eric F., Bianchi, Luciana, Caldwell, Nelson, Gouliermis, Dimitrios A., Guhathakurta, Puragra, Kalirai, Jason, Larsen, Søren S., Rix, Hans-Walter, Seth, Anil C., Skillman, Evan D., and Williams, Benjamin F. 2014. "The Panchromatic Hubble Andromeda Treasury. V. Ages and Masses of the Year 1 Stellar Clusters." The Astrophysical Journal, 786 117. https://doi.org/10.1088/0004-637X/786/2/117. 2014
• Kim, Sooyoung, Yoon, Suk-Jin, Chung, Chul, Caldwell, Nelson, Schiavon, Ricardo P., Kang, Yongbeom, Rey, Soo-Chang, and Lee, Young-Wook. 2013. "Nonlinear Color-Metallicity Relations of Globular Clusters. V. Nonlinear Absorption-line Index versus Metallicity Relations and Bimodal Index Distributions of M31 Globular Clusters." The Astrophysical Journal, 768 138. https://doi.org/10.1088/0004-637X/768/2/138. 2013
• Schiavon, Ricardo P., Caldwell, Nelson, Conroy, Charlie, Graves, Genevieve J., Strader, Jay, MacArthur, Lauren A., Courteau, Stéphane, and Harding, Paul. 2013. "Star Clusters in M31. V. Evidence for Self-enrichment in Old M31 Clusters from Integrated Spectroscopy." The Astrophysical Journal Letters, 776 L7. https://doi.org/10.1088/2041-8205/776/1/L7. 2013
• Strader, Jay, Seth, Anil C., Forbes, Duncan A., Fabbiano, Giuseppina, Romanowsky, Aaron J., Brodie, Jean P., Conroy, Charlie, Caldwell, Nelson, Pota, Vincenzo, Usher, Christopher, and Arnold, Jacob A. 2013. "The Densest Galaxy." The Astrophysical Journal Letters, 775 L6. https://doi.org/10.1088/2041-8205/775/1/L6. 2013
• Kochanek, C. S., Eisenstein, D. J., Cool, R. J., Caldwell, Nelson, Assef, R. J., Jannuzi, B. T., Jones, C., Murray, Stephen S., Forman, W. R., Dey, A., Brown, M. J. I., Eisenhardt, P., Gonzalez, A. H., Green, P., and Stern, D. 2012. "AGES: The AGN and Galaxy Evolution Survey." The Astrophysical Journal Supplement Series, 200 8. https://doi.org/10.1088/0067-0049/200/1/8. 2012
• Hicken, Malcolm, Challis, Peter, Kirshner, Robert P., Rest, Armin, Cramer, Claire E., Wood-Vasey, W., Bakos, Gaspar, Berlind, Perry, Brown, Warren R., Caldwell, Nelson, Calkins, Mike, Currie, Thayne, de Kleer, Kathy, Esquerdo, Gilbert, Everett, Mark, Falco, Emilio, Fernandez, Jose, Friedman, Andrew S., Groner, Ted, Hartman, Joel, Holman, Matthew J., Hutchins, Robert, Keys, Sonia, Kipping, David, Latham, Dave et al. 2012. "CfA4: Light Curves for 94 Type Ia Supernovae." The Astrophysical Journal Supplement Series, 200 12. https://doi.org/10.1088/0067-0049/200/2/12. 2012
• Strader, Jay, Seth, Anil C., and Caldwell, Nelson. 2012. "Old Massive Globular Clusters and the Stellar Halo of the Dwarf Starburst Galaxy NGC 4449." The Astronomical Journal, 143, (2). https://doi.org/10.1088/0004-6256/143/2/52. 2012
• Johnson, L. C., Seth, Anil C., Dalcanton, Julianne J., Caldwell, Nelson, Fouesneau, Morgan, Gouliermis, Dimitrios A., Hodge, Paul W., Larsen, Sø, Olsen, Knut A. G., San Roman, Izaskun, Sarajedini, Ata, Weisz, Daniel R., Williams, Benjamin F., Beerman, Lori C., Bianchi, Luciana, Dolphin, Andrew E., Girardi, Léo, Guhathakurta, Puragra, Kalirai, Jason, Lang, Dustin, Monachesi, Antonela, Nanda, Sanjay, Rix, Hans-Walter, and Skillman, Evan D. 2012. "PHAT Stellar Cluster Survey. I. Year 1 Catalog and Integrated Photometry." The Astrophysical Journal, 752 95. https://doi.org/10.1088/0004-637X/752/2/95. 2012
• Cool, Richard J., Eisenstein, Daniel J., Kochanek, Christopher S., Brown, Michael J. I., Caldwell, Nelson, Dey, Arjun, Forman, William R., Hickox, Ryan C., Jannuzi, Buell T., Jones, Christine, Moustakas, John, and Murray, Stephen S. 2012. "The Galaxy Optical Luminosity Function from the AGN and Galaxy Evolution Survey." The Astrophysical Journal, 748 10. https://doi.org/10.1088/0004-637X/748/1/10. 2012
• Sanders, Nathan E., Caldwell, Nelson, McDowell, Jonathan, and Harding, Paul. 2012. "The Metallicity Profile of M31 from Spectroscopy of Hundreds of H II Regions and PNe." The Astrophysical Journal, 758 133. https://doi.org/10.1088/0004-637X/758/2/133. 2012
• Dalcanton, Julianne J., Williams, Benjamin F., Lang, Dustin, Lauer, Tod R., Kalirai, Jason S., Seth, Anil C., Dolphin, Andrew, Rosenfield, Philip, Weisz, Daniel R., Bell, Eric F., Bianchi, Luciana C., Boyer, Martha L., Caldwell, Nelson, Dong, Hui, Dorman, Claire E., Gilbert, Karoline M., Girardi, Léo, Gogarten, Stephanie M., Gordon, Karl D., Guhathakurta, Puragra, Hodge, Paul W., Holtzman, Jon A., Johnson, L. C., Larsen, Sø, Lewis, Alexia et al. 2012. "The Panchromatic Hubble Andromeda Treasury." The Astrophysical Journal Supplement Series, 200 18. https://doi.org/10.1088/0067-0049/200/2/18. 2012
• Sand, David J., Strader, Jay, Willman, Beth, Zaritsky, Dennis, McLeod, Brian A., Caldwell, Nelson, Seth, Anil, and Olszewski, Edward. 2012. "Tidal Signatures in the Faintest Milky Way Satellites: The Detailed Properties of Leo V, Pisces II, and Canes Venatici II." The Astrophysical Journal, 756 79. https://doi.org/10.1088/0004-637X/756/1/79. 2012
• Hickox, Ryan C., Myers, Adam D., Brodwin, Mark, Alexander, David M., Forman, William R., Jones, Christine, Murray, Stephen S., Brown, Michael J. I., Cool, Richard J., Kochanek, Christopher S., Dey, Arjun, Jannuzi, Buell T., Eisenstein, Daniel, Assef, Roberto J., Eisenhardt, Peter R., Gorjian, Varoujan, Stern, Daniel, Le Floc'h, Emeric, Caldwell, Nelson, Goulding, Andrew D., and Mullaney, James R. 2011. "Clustering of Obscured and Unobscured Quasars in the Boötes Field: Placing Rapidly Growing Black Holes in the Cosmic Web." The Astrophysical Journal, 731, (2) 117. https://doi.org/10.1088/0004-637X/731/2/117. 2011
• Szentgyorgyi, Andrew H., Furesz, Gabor, Cheimets, Peter, Conroy, Maureen, Eng, Roger, Fabricant, Daniel, Fata, Robert, Gauron, Thomas, Geary, John, McLeod, Brian A., Zajac, Joseph, Amato, Stephen, Bergner, Henry, Caldwell, Nelson, Dupree, Andrea, Goddard, Richard, Johnston, Everett, Meibom, Søren, Mink, Douglas, Pieri, Mario, Roll, John, Tokarz, Susan, Wyatt, William, Epps, Harland, Hartmann, Lee et al. 2011. "Hectochelle: A Multiobject Optical Echelle Spectrograph for the MMT." Publications of the Astronomical Society of the Pacific, 123 1188–1209. https://doi.org/10.1086/662209. 2011
• Caldwell, Nelson, Schiavon, Ricardo, Morrison, Heather, Rose, James A., and Harding, Paul. 2011. "Star Clusters in M31. II. Old Cluster Metallicities and Ages from Hectospec Data." The Astronomical Journal, 141, (2) 61. https://doi.org/10.1088/0004-6256/141/2/61. 2011
• Caldwell, Nelson, Morrison, Heather, Kenyon, Scott J., Schiavon, Ricardo, Harding, Paul, and Rose, James A. 2010. "A Star in the M31 Giant Stream: The Highest Negative Stellar Velocity Known." The Astronomical Journal, 139 372–377. https://doi.org/10.1088/0004-6256/139/2/372. 2010
• Seth, Anil C., Cappellari, Michele, Neumayer, Nadine, Caldwell, Nelson, Bastian, Nate, Olsen, Knut, Blum, Robert D., Debattista, Victor P., McDermid, Richard, Puzia, Thomas, and Stephens, Andrew. 2010. "The NGC 404 Nucleus: Star Cluster and Possible Intermediate-mass Black Hole." The Astrophysical Journal, 714 713–731. https://doi.org/10.1088/0004-637X/714/1/713. 2010
• Brown, Michael J. I., Moustakas, John, Caldwell, Nelson, Palamara, David, Cool, Richard J., Dey, Arjun, Hickox, Ryan C., Jannuzi, Buell T., Murray, Stephen S., and Zaritsky, Dennis. 2009. "Active Galactic Nuclei and the Truncation of Star Formation in K A Galaxies." The Astrophysical Journal, 703 150–158. 2009
• Seth, Anil C., Blum, Robert D., Bastian, Nate, Caldwell, Nelson, Debattista, Victor P., and Puzia, Thomas H. 2009. "Erratum: "The Rotating Nuclear Star Cluster in NGC 4244" (2008, ApJ, 687, 997)." The Astrophysical Journal, 693 1959. 2009
• Hickox, Ryan C., Jones, Christine, Forman, William R., Murray, Stephen S., Kochanek, Christopher S., Eisenstein, Daniel, Jannuzi, Buell T., Dey, Arjun, Brown, Michael J. I., Stern, Daniel, Eisenhardt, Peter R., Gorjian, Varoujan, Brodwin, Mark, Narayan, Ramesh, Cool, Richard J., Kenter, Almus, Caldwell, Nelson, and Anderson, Michael E. 2009. "Host Galaxies, Clustering, Eddington Ratios, and Evolution of Radio, X-Ray, and Infrared- Selected AGNs." The Astrophysical Journal, 696 891–919. https://doi.org/10.1088/0004-637X/696/1/891. 2009
• Caldwell, Nelson, Harding, Paul, Morrison, Heather, Rose, James A., Schiavon, Ricardo, and Kriessler, Jeff. 2009. "Star Clusters in M31. I. A Catalog and a Study of the Young Clusters." The Astronomical Journal, 137 94–110. https://doi.org/10.1088/0004-6256/137/1/94. 2009
• Drout, Maria R., Massey, Philip, Meynet, Georges, Tokarz, Susan, and Caldwell, Nelson. 2009. "Yellow Supergiants in the Andromeda Galaxy (M31)." The Astrophysical Journal, 703 441–460. 2009
• Assef, R. J., Kochanek, C. S., Brodwin, Mark, Brown, Michael J. I., Caldwell, Nelson, Cool, R. J., Eisenhardt, P., Eisenstein, D., Gonzalez, A. H., Jannuzi, B. T., Jones, C., McKenzie, E., Murray, S. S., and Stern, D. 2008. "Low-Resolution Spectral Templates for Galaxies from 0.2 to 10 ?m." The Astrophysical Journal, 676 286–303. 2008
• Fabricant, Daniel G., Kurtz, Michael J., Geller, Margaret J., Caldwell, Nelson, Woods, Deborah, and Dell'Antonio, Ian. 2008. "Spectrophotometry with Hectospec, the MMT's Fiber-Fed Spectrograph." Publications of the Astronomical Society of the Pacific, 120 1222–1232. 2008
• Hickox, R. C., Jones, C., Forman, William R., Murray, Stephen S., Brodwin, Mark, Brown, Michael J. I., Eisenhardt, P. R., Stern, D., Kochanek, C. S., Eisenstein, D., Cool, R. J., Jannuzi, B. T., Dey, A., Brand, Kate, Gorjian, V., and Caldwell, Nelson. 2007. "A Large Population of Mid-Infrared-selected, Obscured Active Galaxies in the Bo”tes Field." The Astrophysical Journal, 671 1365–1387. 2007