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Title: PHAT STELLAR CLUSTER SURVEY. I. YEAR 1 CATALOG AND INTEGRATED PHOTOMETRY

Abstract

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 arcmin{sup 2}). This work presents results derived from the first {approx}25% of the survey data; we estimate that the final sample will include {approx}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.

Authors:
; ; ; ; ; ;  [1];  [2];  [3];  [4];  [5];  [6]; ;  [7];  [8];  [9];  [10];  [11];  [12];  [13] more »; « less
  1. Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195 (United States)
  2. Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112 (United States)
  3. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
  4. Institut fuer Theoretische Astrophysik, Zentrum fuer Astronomie der Universitaet Heidelberg, Albert-Ueberle-Strasse 2, D-69120 Heidelberg (Germany)
  5. Department of Astrophysics, IMAPP, Radboud University Nijmegen, P.O. Box 9010, 6500 GL Nijmegen (Netherlands)
  6. National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719 (United States)
  7. Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055 (United States)
  8. Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States)
  9. Raytheon Company, 1151 East Hermans Road, Tucson, AZ 85756 (United States)
  10. Osservatorio Astronomico di Padova-INAF, Vicolo dell'Osservatorio 5, I-35122 Padova (Italy)
  11. Department of Astronomy and Astrophysics, University of California Observatories/Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064 (United States)
  12. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)
  13. Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)
Publication Date:
OSTI Identifier:
22037052
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 752; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; ASTROPHYSICS; CATALOGS; DISTRIBUTION; GALAXIES; LUMINOSITY; PHOTOMETRY; SPATIAL RESOLUTION; STAR CLUSTERS; ULTRAVIOLET RADIATION

Citation Formats

Johnson, L. Clifton, Dalcanton, Julianne J., Fouesneau, Morgan, Hodge, Paul W., Weisz, Daniel R., Williams, Benjamin F., Beerman, Lori C., Seth, Anil C., Caldwell, Nelson, Gouliermis, Dimitrios A., Larsen, Soren S., Olsen, Knut A. G., San Roman, Izaskun, Sarajedini, Ata, Bianchi, Luciana, Dolphin, Andrew E., Girardi, Leo, Guhathakurta, Puragra, Kalirai, Jason, Lang, Dustin, E-mail: lcjohnso@astro.washington.edu, and and others. PHAT STELLAR CLUSTER SURVEY. I. YEAR 1 CATALOG AND INTEGRATED PHOTOMETRY. United States: N. p., 2012. Web. doi:10.1088/0004-637X/752/2/95.
Johnson, L. Clifton, Dalcanton, Julianne J., Fouesneau, Morgan, Hodge, Paul W., Weisz, Daniel R., Williams, Benjamin F., Beerman, Lori C., Seth, Anil C., Caldwell, Nelson, Gouliermis, Dimitrios A., Larsen, Soren S., Olsen, Knut A. G., San Roman, Izaskun, Sarajedini, Ata, Bianchi, Luciana, Dolphin, Andrew E., Girardi, Leo, Guhathakurta, Puragra, Kalirai, Jason, Lang, Dustin, E-mail: lcjohnso@astro.washington.edu, & and others. PHAT STELLAR CLUSTER SURVEY. I. YEAR 1 CATALOG AND INTEGRATED PHOTOMETRY. United States. doi:10.1088/0004-637X/752/2/95.
Johnson, L. Clifton, Dalcanton, Julianne J., Fouesneau, Morgan, Hodge, Paul W., Weisz, Daniel R., Williams, Benjamin F., Beerman, Lori C., Seth, Anil C., Caldwell, Nelson, Gouliermis, Dimitrios A., Larsen, Soren S., Olsen, Knut A. G., San Roman, Izaskun, Sarajedini, Ata, Bianchi, Luciana, Dolphin, Andrew E., Girardi, Leo, Guhathakurta, Puragra, Kalirai, Jason, Lang, Dustin, E-mail: lcjohnso@astro.washington.edu, and and others. Wed . "PHAT STELLAR CLUSTER SURVEY. I. YEAR 1 CATALOG AND INTEGRATED PHOTOMETRY". United States. doi:10.1088/0004-637X/752/2/95.
@article{osti_22037052,
title = {PHAT STELLAR CLUSTER SURVEY. I. YEAR 1 CATALOG AND INTEGRATED PHOTOMETRY},
author = {Johnson, L. Clifton and Dalcanton, Julianne J. and Fouesneau, Morgan and Hodge, Paul W. and Weisz, Daniel R. and Williams, Benjamin F. and Beerman, Lori C. and Seth, Anil C. and Caldwell, Nelson and Gouliermis, Dimitrios A. and Larsen, Soren S. and Olsen, Knut A. G. and San Roman, Izaskun and Sarajedini, Ata and Bianchi, Luciana and Dolphin, Andrew E. and Girardi, Leo and Guhathakurta, Puragra and Kalirai, Jason and Lang, Dustin, E-mail: lcjohnso@astro.washington.edu and and others},
abstractNote = {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 arcmin{sup 2}). This work presents results derived from the first {approx}25% of the survey data; we estimate that the final sample will include {approx}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.},
doi = {10.1088/0004-637X/752/2/95},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 752,
place = {United States},
year = {2012},
month = {6}
}