J/ApJ/762/46 SHARDS: GOODS-N spectrophotometry survey (Perez-Gonzalez+, 2013)
SHARDS: an optical spectro-photometric survey of distant galaxies.
Perez-Gonzalez P.G., Cava A., Barro G., Villar V., Cardiel N., Ferreras I.,
Rodriguez-Espinosa J.M., Alonso-Herrero A., Balcells M., Cenarro J.,
Cepa J., Charlot S., Cimatti A., Conselice C.J., Daddi E., Donley J.,
Elbaz D., Espino N., Gallego J., Gobat R., Gonzalez-Martin O., Guzman R.,
Hernan-Caballero A., Munoz-Tunon C., Renzini A., Rodriguez-Zaurin J.,
Tresse L., Trujillo I., Zamorano J.
<Astrophys. J., 762, 46 (2013)>
=2013ApJ...762...46P 2013ApJ...762...46P
ADC_Keywords: Galaxies, optical ; Spectrophotometry ; Surveys ; Stars, ages ;
Models ; Extinction
Keywords: galaxies: high-redshift; galaxies: photometry; galaxies: starburst;
infrared: galaxies
Abstract:
We present the Survey for High-z Absorption Red and Dead Sources
(SHARDS), an ESO/GTC Large Program carried out using the OSIRIS
instrument on the 10.4m Gran Telescopio Canarias (GTC). SHARDS is an
ultra-deep optical spectro-photometric survey of the GOODS-N field
covering 130arcmin2 at wavelengths between 500 and 950nm with 24
contiguous medium-band filters (providing a spectral resolution R∼50).
The data reach an AB magnitude of 26.5 (at least at a 3σ level)
with sub-arcsec seeing in all bands. SHARDS' main goal is to obtain
accurate physical properties of intermediate- and high-z galaxies
using well-sampled optical spectral energy distributions (SEDs) with
sufficient spectral resolution to measure absorption and emission
features, whose analysis will provide reliable stellar population and
active galactic nucleus (AGN) parameters. Among the different
populations of high-z galaxies, SHARDS' principal targets are massive
quiescent galaxies at z>1, whose existence is one of the major
challenges facing current hierarchical models of galaxy formation. In
this paper, we outline the observational strategy and include a
detailed discussion of the special reduction and calibration
procedures which should be applied to the GTC/OSIRIS data. An
assessment of the SHARDS data quality is also performed. We present
science demonstration results on the detection and study of
emission-line galaxies (star-forming objects and AGNs) at z=0-5. We
also analyze the SEDs for a sample of 27 quiescent massive galaxies
with spectroscopic redshifts in the range 1.0<z≲1.4.
Description:
Survey for High-z Absorption Red and Dead Sources (SHARDS) is an
ESO/GTC Large Program awarded 180hr of the Spanish 10.4m telescope,
Gran Telescopio Canarias (GTC), time during 2010-2013. This project
consists of an ultra-deep (m<26.5ABmag) imaging survey in 24
medium-band filters between 500 and 950nm and targeting the GOODS-N
field; covering most of the area observed with the Hubble Space
Telescope (HST)/ACS instrument.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
galaxies.dat 27 27 Galaxies used in the survey
table2.dat 147 289 Stellar population synthesis results for 27 red
and dead galaxies at z∼1
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See also:
II/253 : Chandra Deep Field South: multi-colour data (Wolf+, 2008)
II/261 : GOODS initial results (Giavalisco+, 2004)
VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003)
J/A+A/533/A119 : GOODS-Herschel North and South catalogs (Elbaz+, 2011)
J/A+A/532/A90 : PACS Evolutionary Probe (PEP-DR1) catalogs (Lutz+, 2011)
J/ApJS/193/30 : UV-to-FIR analysis of sources in the EGS. II. (Barro+, 2011)
J/ApJS/193/14 : DEEP3 Galaxy Redshift Survey: GOODS-N field (Cooper+, 2011)
J/ApJS/193/13 : Spitzer/IRAC sources in the EGS I. SEDs (Barro+, 2011)
J/ApJ/735/86 : NEWFIRM MBS: photometric catalogs (Whitaker+, 2011)
J/ApJS/189/270 : MUSYC optical imaging in ECDF-S (Cardamone+, 2010)
J/A+A/504/751 : GOODS-MUSIC catalog updated version (Santini+, 2009)
J/ApJ/706/158 : Early-type galaxies in PEARS (Ferreras+, 2009)
J/ApJ/697/1369 : GOODS Ks-selected multiwavelength compilations (Bundy+, 2009)
J/ApJ/695/1591 : Spectrophotometry in PEARS fields (Pirzkal+, 2009)
J/ApJ/689/687 : GOODS-N spectroscopic survey (Barger+, 2008)
J/ApJ/675/234 : Stellar mass functions for 0<z<4 gal. (Perez-Gonzalez+, 2008)
J/ApJS/176/301 : Subaru/XMM-Newton deep survey IV. (SXDS) (Ouchi+, 2008)
J/ApJS/175/128 : Hα emitting galaxies in COSMOS-2 field (Shioya+, 2008)
J/ApJS/172/456 : OII emitting galaxies in COSMOS+SDF fields (Takahashi+, 2007)
J/ApJ/657/738 : SDF galaxies multi-photometry (Ly+, 2007)
J/ApJ/653/1004 : Galaxies at 1.4≲z≲3.0 in GOODS-North Field (Reddy+, 2006)
J/ApJ/622/772 : Redshift survey of submillimeter galaxies (Chapman+, 2005)
J/AJ/127/3137 : Hawaii redshifts in the ACS-GOODS region (Cowie+, 2004)
J/AJ/127/3121 : TKRS catalog of GOODS-North Field (Wirth+, 2004)
J/AJ/126/1183 : Major galaxy mergers at z≲3 (Conselice+, 2003)
J/MNRAS/338/525 : Recent star formation in UCM galaxies (Perez-Gonzalez+, 2003)
J/A+A/379/798 : ELAIS Hα emitting galaxies (Pascual+, 2001)
J/ApJS/111/203 : Chemo-evolutionary Population Synthesis II. (Vazdekis+ 1997)
Byte-by-byte Description of file: galaxies.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Galaxy name (JHHMMSS.ss+DDMMSS.ss)
22- 27 F6.4 --- z [1/1.5] Spectroscopic redshift from
literature (1)
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Note (1): The multi-wavelength data set available in GOODS-N is extensive with
multiple spectroscopic redshift surveys (Wirth et al. 2004,
Cat. J/AJ/127/3121; Cowie et al. 2004, Cat. J/AJ/127/3137;
Reddy et al. 2006, Cat. J/ApJ/653/1004), a few of them at z>1.5
(Reddy et al. 2005ApJ...633..748R 2005ApJ...633..748R; Barger et al. 2008,
Cat. J/ApJ/689/687).
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 20 A20 --- Name Galaxy name (JHHMMSS.ss+DDMMSS.ss)
22- 27 F6.4 --- z [1/1.5] Spectroscopic redshift
29- 37 A9 --- Model Stellar population and IMF model (2)
39- 44 F6.1 Myr tau [1/2890] Exponential decay factor τ of the
star formation history
46- 50 F5.1 Myr e_tau Lower 1σ uncertainty in tau
52- 56 F5.1 Myr E_tau Upper 1σ uncertainty in tau
58- 61 F4.2 Gyr Age [0.2/5.6] Age of best fitting model
63- 66 F4.2 Gyr e_Age Lower 1σ uncertainty in Age
68- 71 F4.2 Gyr E_Age Upper 1σ uncertainty in Age
73- 76 F4.2 mag Av [0/1.8] V band extinction AV
78- 81 F4.2 mag e_Av Lower 1σ uncertainty in Av
83- 86 F4.2 mag E_Av Upper 1σ uncertainty in Av
88- 92 F5.3 Sun Z [0.005/5] Metallicity in solar units
94- 98 F5.3 Sun e_Z Lower 1σ uncertainty in Z
100-104 F5.3 Sun E_Z Upper 1σ uncertainty in Z
106-110 F5.2 [Msun] logM [10/11.5] Log of the stellar mass
112-115 F4.2 [Msun] e_logM Lower 1σ uncertainty in logM
117-120 F4.2 [Msun] E_logM Upper 1σ uncertainty in logM
122-127 F6.2 --- chi2 [0.1/530] Median goodness of the fit value
129-134 F6.2 --- e_chi2 Lower 1σ uncertainty in chi2
136-141 F6.2 --- E_chi2 Upper 1σ uncertainty in chi2
143-147 F5.1 % Prob Statistical significance of this solution (3)
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Note (2): First five rows for each galaxy present the results for the most
statistically significant solution for each one of the SPS libraries
presented in the text. Next, secondary solutions are given (if
available). Stellar population synthesis (SPS) models are
(see section 5.2 for further explanations):
BC03-chab = The Bruzual & Charlot (2003MNRAS.344.1000B 2003MNRAS.344.1000B) models (BC03) with a
Chabrier (chab; 2003ApJ...586L.133C 2003ApJ...586L.133C) initial mass function (IMF).
This was chosen as our fiducial model.
CB09-chab = The Charlot & Bruzual (2009) with a Chabrier IMF
CB09-krou = The Charlot & Bruzual (2009) models (CB09) with a Kroupa IMF.
M05-krou = The Maraston (2005MNRAS.362..799M 2005MNRAS.362..799M) models (M05) with a Kroupa IMF
P01-krou = the PEGASE code (Fioc & Rocca-Volmerange 1997A&A...326..950F 1997A&A...326..950F;
P01), assuming a Kroupa (2001MNRAS.322..231K 2001MNRAS.322..231K) IMF.
Note (3): Only solutions with a significance above 10% are shown.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 01-Sep-2014