J/ApJ/756/164 UV galaxies in CANDELS from z=8 to z=4 (Finkelstein+, 2012)
CANDELS: the evolution of galaxy rest-frame ultraviolet colors from z = 8 to 4.
Finkelstein S.L., Papovich C., Salmon B., Finlator K., Dickinson M.,
Ferguson H.C., Giavalisco M., Koekemoer A.M., Reddy N.A., Bassett R.,
Conselice C.J., Dunlop J.S., Faber S.M., Grogin N.A., Hathi N.P.,
Kocevski D.D., Lai K., Lee K.-S., McLure R.J., Mobasher B., Newman J.A.
<Astrophys. J., 756, 164 (2012)>
=2012ApJ...756..164F 2012ApJ...756..164F
ADC_Keywords: Galaxies, photometry ; Photometry, HST ; Redshifts ; Ultraviolet ;
Surveys
Keywords: early universe; galaxies: evolution; galaxies: formation
galaxies: high-redshift; ultraviolet: galaxies
Abstract:
We study the evolution of galaxy rest-frame ultraviolet (UV) colors in
the epoch 4≲z≲8. We use new wide-field near-infrared data in the
Great Observatories Origins Deep Survey-South field from the Cosmic
Assembly Near-infrared Deep Extragalactic Legacy Survey, Hubble Ultra
Deep Field (HUDF) 2009, and Early Release Science programs to select
galaxies via photometric redshift measurements. Our sample consists of
2812 candidate galaxies at z≳3.5, including 113 at z≃7-8. We fit the
observed spectral energy distribution to a suite of synthetic stellar
population models and measure the value of the UV spectral slope
(β) from the best-fit model spectrum. We run simulations to show
that this measurement technique results in a smaller scatter on β
than other methods, as well as a reduced number of galaxies with
catastrophically incorrect β measurements (i.e., Δβ>1).
Description:
We select our sample of galaxies from a number of data sets (CANDELS,
HUDF09 program, WFC3 Early Release Science (ERS); see section 2). We
use archival HST optical data obtained with the Advanced Camera for
Surveys (ACS) in the F435W, F606W, F775W, and F850LP filters from
Beckwith et al. (2006, Cat. J/AJ/132/1729) for the HUDF, as well as
the GOODS ACS v2 imaging for the DEEP, WIDE, and ERS fields.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 106 2812 Properties of our galaxy sample
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See also:
B/hst : HST Archived Exposures Catalog (STScI, 2007)
II/261 : GOODS initial results (Giavalisco+, 2004)
II/258 : Hubble Ultra Deep Field Catalog (UDF) (STScI, 2004)
J/ApJS/207/24 : GOODS-S CANDELS multiwavelength catalog (Guo+, 2013)
J/ApJS/206/10 : CANDELS multiwavelength catalog (Galametz+, 2013)
J/ApJS/203/24 : Structural param. of galaxies in CANDELS (van der Wel+, 2012)
J/ApJ/754/83 : UV continuum for z∼4-7 star-forming galaxies (Bouwens+, 2012)
J/A+A/545/A141 : UV selected sources in the GOODS-S field (Buat+, 2012)
J/AJ/141/14 : HST WFC3 ERS : emission-line galaxies (Straughn+, 2011)
J/ApJ/743/146 : HST/WFC3 observations in HUDF and GOODS-S (Cameron+, 2011)
J/ApJ/738/69 : SEDs of galaxies at 3.8<z<5 in GOODS (Shim+, 2011)
J/MNRAS/418/2074 : Robust sample of galaxies at 6.0<z<8.7 (Mclure+, 2011)
J/ApJ/704/548 : Photometric properties of galaxies at z=4-6 (Overzier+, 2009)
J/ApJ/682/985 : FIREWORKS photometry of GOODS CDF-S (Wuyts+, 2008)
J/A+A/478/83 : GOODS-South Field VLT/FORS2 redshifts. III. (Vanzella+, 2008)
J/ApJ/673/143 : HST photometry of TN J1338-1942 (Overzier+, 2008)
J/AJ/132/2014 : NUV sources in CDF-S and HDF-N GOODS fields (De Mello+, 2006)
J/AJ/132/1729 : Hubble Ultra Deep Field BVI-dropout sources (Beckwith+, 2006)
J/AJ/132/926 : Galaxies in the Hubble Ultra Deep Field (Coe+, 2006)
J/ApJ/653/1004 : Galaxies at 1.4≲z≲3.0 in GOODS-North Field (Reddy+, 2006)
J/ApJ/653/53 : z∼6 galaxies UV luminosity function (Bouwens+, 2006)
J/A+A/449/951 : GOODS-MUSIC sample: multicolour catalog (Grazian+, 2006)
http://candels.ucolick.org/ : CANDELS home page
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- ID Galaxy identifier
12- 13 A2 --- Set Sample identifier (z4 to z8)
15- 23 F9.6 deg RAdeg [52.9/53.3] Right Ascension (J2000)
25- 34 F10.6 deg DEdeg [-28/-27.6] Declination (J2000)
36- 39 F4.2 --- zph [3.2/8.6] Photometric redshift
41- 44 F4.2 --- bzph [0.3/8.1] Lower 68% confidence limit on zph
46- 49 F4.2 --- Bzph Upper 68% confidence limit on zph
51- 55 F5.2 --- beta [-3/6.8] UV spectral slope β, such that
fλ∝λβ
57- 61 F5.2 --- bbeta Lower 68% confidence limit on beta
63- 67 F5.2 --- Bbeta Upper 68% confidence limit on beta
69- 74 F6.2 mag M1500 [-24.2/-15] Absolute magnitude at 1500Å (1)
76- 81 F6.2 mag bM1500 Lower 68% confidence limit on M1500
83- 88 F6.2 mag BM1500 Upper 68% confidence limit on M1500
90- 94 F5.2 [Msun] logM* [6.6/13.7] Log of stellar mass
96-100 F5.2 [Msun] blogM* Lower 68% confidence limit on logM*
102-106 F5.2 [Msun] BlogM* Upper 68% confidence limit on logM*
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Note (1): We measure the absolute magnitude at 1500Å (M1500) from the
best-fit spectrum by integrating the flux within a 100Å wide
square bandpass centered on 1500Å. See section 3.1.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 14-May-2014