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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 660886.0, MPI für Astronomie / Publikationen_mpia
PHAT Stellar Cluster Survey. I. Year 1 catalog and integrated photometry
Authors:Johnson, L. C.; Seth, A. C.; Dalcanton, J. J.; Caldwell, N.; Fouesneau, M.; Gouliermis, D. A.; Hodge, P. W.; Larsen, S. S.; Olsen, K. A. G.; San Roman, I.; Sarajedini, A.; Weisz, D. R.; Williams, B. F.; Beerman, L. C.; Bianchi, L.; Dolphin, A. E.; Girardi, L.; Guhathakurta, P.; Kalirai, J.; Lang, D.; Monachesi, A.; Nanda, S.; Rix, H.-W.; Skillman, E. D.
Date of Publication (YYYY-MM-DD):2012
Journal Abbrev.:The Astrophysical Journal
Issue / Number:2
Start Page:id. 95
Audience:Not Specified
Abstract / Description:The Panchromatic Hubble Andromeda Treasury (PHAT) survey is an ongoing Hubble Space Telescope (HST) multi-cycle program to obtain high spatial resolution imaging of one-third of the M31 disk at ultraviolet through near-infrared wavelengths. In this paper, we present the first installment of the PHAT stellar cluster catalog. When completed, the PHAT cluster catalog will be among the largest and most comprehensive surveys of resolved star clusters in any galaxy. The exquisite spatial resolution achieved with HST has allowed us to identify hundreds of new clusters that were previously inaccessible with existing ground-based surveys. We identify 601 clusters in the Year 1 sample, representing more than a factor of four increase over previous catalogs within the current survey area (390 arcmin2). This work presents results derived from the first ~25% of the survey data; we estimate that the final sample will include ~2500 clusters. For the Year 1 objects, we present a catalog with positions, radii, and six-band integrated photometry. Along with a general characterization of the cluster luminosities and colors, we discuss the cluster luminosity function, the cluster size distributions, and highlight a number of individually interesting clusters found in the Year 1 search.
Free Keywords:catalogs; galaxies: individual: M31; galaxies: star clusters: general
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
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