Stellar Masses from the CANDELS Survey: The GOODS-South and UDS Fields
Journal
Date Issued
2015
Author(s)
•
Ferguson, H. C.
•
•
Mobasher, B.
•
Barro, G.
•
•
Finkelstein, S. L.
•
•
Hsu, L. T.
•
Lee, B.
•
Lee, S. -K.
•
Pforr, J.
•
Salvato, M.
•
Wiklind, T.
•
Wuyts, S.
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Almaini, O.
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Cooper, M. C.
•
Galametz, A.
•
Weiner, B.
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Amorin, R.
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Boutsia, K.
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Conselice, C. J.
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Dahlen, T.
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Dickinson, M. E.
•
Giavalisco, M.
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Grogin, N. A.
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Guo, Y.
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Hathi, N. P.
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Kocevski, D.
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Koekemoer, A. M.
•
Kurczynski, P.
•
•
Mortlock, A.
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Newman, J. A.
•
•
•
Simons, R.
•
Willner, S. P.
Description
We thank the referee for helpful comments. P.S., A.F., M.C., R.A., K.B. and E.M. acknowledge the contribution of the EC FP7 SPACE project ASTRODEEP (Ref.No: 312725). P.S. also acknowledges the grant ASI I/005/11/0. S.L. acknowledges the support by the National Research Foundation of Korea (NRF) grant, No. 2008-0060544, funded by the Korea government (MSIP). This work is based in part on observations (program GO-12060) made with the NASA/ESA Hubble Space Telescope , which is operated by the Association of Universities for Research in Astronomy, Inc, under NASA contract NAS5-26555. This work is also based in part on observations made with the Spitzer Space Telescope , which is operated by the Jet Propulsion Laboratory, California Institute of Technology under NASA contract 1407. This work uses data from the following ESO programs: 60.A-9284, 181.A0717, LP 186.A-0898 and 085.A-0961.
Abstract
We present the public release of the stellar mass catalogs for the GOODS-S and UDS fields obtained using some of the deepest near-IR images available, achieved as part of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey project. We combine the effort from 10 different teams, who computed the stellar masses using the same photometry and the same redshifts. Each team adopted their preferred fitting code, assumptions, priors, and parameter grid. The combination of results using the same underlying stellar isochrones reduces the systematics associated with the fitting code and other choices. Thanks to the availability of different estimates, we can test the effect of some specific parameters and assumptions on the stellar mass estimate. The choice of the stellar isochrone library turns out to have the largest effect on the galaxy stellar mass estimates, resulting in the largest distributions around the median value (with a semi interquartile range larger than 0.1 dex). On the other hand, for most galaxies, the stellar mass estimates are relatively insensitive to the different parameterizations of the star formation history. The inclusion of nebular emission in the model spectra does not have a significant impact for the majority of galaxies (less than a factor of 2 for ~80% of the sample). Nevertheless, the stellar mass for the subsample of young galaxies (age <100 Myr), especially in particular redshift ranges (e.g., 2.2 < z < 2.4, 3.2 < z < 3.6, and 5.5 < z < 6.5), can be seriously overestimated (by up to a factor of 10 for <20 Myr sources) if nebular contribution is ignored.
Volume
801
Issue
2
Start page
97
Issn Identifier
0004-637X
Ads BibCode
2015ApJ...801...97S
Rights
open.access
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