Ko, Youkyung, Lee, Myung Gyoon, Park, Hong Soo, Lim, Sungsoon, Sohn, Jubee, Hwang, Narae and Park, Byeong-Gon
Abstract
We survey globular clusters (GCs) in M85 using ugi-band images of a 1° × 1° field obtained with the MegaCam at the 3.6 m Canada-France-Hawaii Telescope. We identify 1318 GC candidates with 20.0 mag 0-0.33+0.43 and effective radius R e,GCS = 4.'14 (=22 kpc), showing that the candidates at R = 4.'14 (=22 kpc), showing that the candidates at R -50+82, and the specific frequency, {S}N={1.41}-0.06+0.10. The overall color distribution of the GCs in M85 is bimodal, but the GCs in the central region at R . The overall color distribution of the GCs in M85 is bimodal, but the GCs in the central region at R 0 color of the RGCs in M85 is about 0.1 mag bluer than typical values for other Virgo early-type galaxies of similar luminosity, indicating that a significant fraction of the RGCs in M85 may be younger than typical GCs. These results indicate that M85 might have undergone a major wet merger recently.
