THE GHOSTS SURVEY. I. HUBBLE SPACE TELESCOPE ADVANCED CAMERA FOR SURVEYS DATA
THE GHOSTS SURVEY. I. HUBBLE SPACE TELESCOPE ADVANCED CAMERA FOR SURVEYS DATA
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幽灵调查 I 哈勃太空望远镜先进相机用于调查数据
DOI:
10.1088/0067-0049/195/2/18
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Vlajić
中科院分区:
文献类型:
--
作者:
Radburn-Smith;de Jong;Bailin;Bullock;Courteau;Dalcanton;Ferguson;Goudfrooij;Holfeltz;Holwerda;Purcell;Streich;Vlajić
We present an overview of the GHOSTS survey, the largest study to date of the resolved stellar populations in the outskirts of disk galaxies. The sample consists of 14 disk galaxies within 17 Mpc, whose outer disks and halos are imaged with the Hubble Space Telescope Advanced Camera for Surveys (ACS). In the first paper of this series, we describe the sample, explore the benefits of using resolved stellar populations, and discuss our ACS F606W and F814W photometry. We use artificial star tests to assess completeness and use overlapping regions to estimate photometric uncertainties. The median depth of the survey at 50% completeness is 2.7 mag below the tip of the red giant branch (TRGB). We comprehensively explore and parameterize contamination from unresolved background galaxies and foreground stars using archival fields of high-redshift ACS observations. Left uncorrected, these would account for 10 0.65× F814W− 19.0 detections per mag per arcsec 2. We therefore identify several selection criteria that typically remove 95% of the contaminants. Even with these culls, background galaxies are a significant limitation to the surface brightness detection limit which, for this survey, is typically V∼ 30 mag arcsec− 2. The resulting photometric catalogs are publicly available and contain some 3.1 million stars across 76 ACS fields, predominantly of low extinction. The uniform magnitudes of TRGB stars in these fields enable galaxy distance estimates with 2%–7% accuracy.
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DOI:
10.1088/0004-637x/692/2/955
发表时间:
2008-01
期刊:
The Astrophysical Journal
影响因子:
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作者:
D. Martinez-Delgado;D. Martinez-Delgado;M. Pohlen;M. Pohlen;R. J. Gabany;S. Majewski;J. Peñarrubia;C. Palma;C. Palma;C. Palma
通讯作者:
D. Martinez-Delgado;D. Martinez-Delgado;M. Pohlen;M. Pohlen;R. J. Gabany;S. Majewski;J. Peñarrubia;C. Palma;C. Palma;C. Palma
DOI:
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发表时间:
2007
期刊:
影响因子:
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作者:
R. D. de Jong;A. Seth;D. Radburn;E. Bell;T. Brown;J. Bullock;S. Courteau;J. Dalcanton;H. Ferguson;P. Goudfrooij;S. Holfeltz;B. Holwerda;C. Purcell;J. Sick;D. Zucker
通讯作者:
D. Zucker
DOI:
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发表时间:
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作者:
通讯作者:
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DOI:
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发表时间:
2007
期刊:
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作者:
L. Strigari;J. Bullock;M. Kaplinghat;J. Diemand;M. Kuhlen;P. Madau
通讯作者:
P. Madau
DOI:
10.1086/321613
发表时间:
2001
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Bellazzini;F. Ferraro;E. Pancino
通讯作者:
E. Pancino