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Article
Wide-Field Survey of Globular Clusters in m31. I. a Catalog of New Clusters
The Astronomical Journal
  • Sang Chul Kim, Korea Astronomy and Space Science Institute; Seoul National University; Kitt Peak National Observatory, National Optical Astronomy Observatory
  • Myung Gyoon Lee, Seoul National University; Kitt Peak National Observatory, National Optical Astronomy Observatory
  • Doug Geisler, Kitt Peak National Observatory, National Optical Astronomy Observatory; Universidad de Concepción, Casilla
  • Ata Sarajedini, Kitt peak National Observatory, National Optical Astronomy Observatory; University of Florida, Gainesville
  • Hong Soo Park, Seoul National Univeristy
  • Ho Seong Hwang, Seoul National University
  • William E. Harris, McMaster University, Hamilton
  • Juan C. Seguel, Universidad de Concepción, Casilla; Cerro Tololo Inter-American Observatory
  • Ted von Hippel, Embry-Riddle Aeronautical University
Submitting Campus
Daytona Beach
Department
Physical Sciences
Document Type
Article
Publication/Presentation Date
8-1-2007
Abstract/Description

We present the result of a wide-field survey of globular clusters (GCs) in M31 covering a 3o x 3o field centered on M31.We have searched for GCs on CCD images taken with Washington CMT1 filters at the KPNO 0.9 m telescope using the following steps: (1) inspection of morphological parameters given by the SExtractor package such as stellarity, full width at half-maximum, and ellipticity; (2) consulting the spectral types and radial velocities obtained from spectra taken with the Hydra spectrograph at the WIYN 3.5 m telescope; and (3) visual inspection of the images of each object. We have found 1164 GCs and GC candidates, of which 605 are newly found GCs and GC candidates and 559 are previously known GCs. Among the new objects there are 113 genuine GCs, 258 probable GCs, and 234 possible GCs, according to our classification criteria. Among the known objects there are 383 genuine GCs, 109 probable GCs, and 67 possible GCs. In total there are 496 genuine GCs, 367 probable GCs, and 301 possible GCs. Most of these newly found GCs have T1 magnitudes of 17.5—19.5 mag [17:9 < V < 19:9 mag assuming (C — T1) ͌ 1:5], and(C — T1) colors in the range 1 — 2.

Publisher
Institute of Physics Publishing, Inc.
Grant or Award Name
Korean Research Foundation grant (KRF-2000-DP0450) and ABRL (R14-2002-058-01000-0)
Citation Information
Sang Chul Kim, Myung Gyoon Lee, Doug Geisler, Ata Sarajedini, et al.. "Wide-Field Survey of Globular Clusters in m31. I. a Catalog of New Clusters" The Astronomical Journal Vol. 134 Iss. 2 (2007) p. 706 - 720
Available at: http://works.bepress.com/ted-vonhippel/65/