J/ApJ/897/44 120 3≤z≤5 galaxies candidates in CANDELS fields (Shahidi+, 2020)
Selection of Massive Evolved Galaxies at 3≤z≤5 in the CANDELS Fields
Shahidi A., Mobasher B., Nayyeri H., Hemmati S., Wiklind T., Chartab N.,
Dickinson M., Finkelstein S.L., Pacifici C., Papovich C., Ferguson H.C.,
Fontana A., Giavalisco M., Koekemoer A., Newman J., Sattari Z.,
Somerville R.
<Astrophys. J., 897, 44 (2020)>
=2020ApJ...897...44S 2020ApJ...897...44S
ADC_Keywords: Galaxies; Photometry, infrared; Optical; Redshifts
Keywords: Galaxies ; High-redshift galaxies ; Galaxy evolution ;
Extragalactic astronomy
Abstract:
Using the CANDELS photometric catalogs for the Hubble Space Telescope
ACS and WFC3, we identified massive evolved galaxies at 3<z<4.5
employing three different selection methods. We find the comoving
number density of these objects to be ∼2x10-5 and 8x10-6/Mpc3
after correction for completeness for two redshift bins centered at
z=3.4, 4.7. We quantify a measure of how much confidence we should
have for each candidate galaxy from different selections and what the
conservative error estimates propagated into our selection are. Then
we compare the evolution of the corresponding number densities and
their stellar mass density with numerical simulations, semianalytical
models, and previous observational estimates, which shows slight
tension at higher redshifts as the models tend to underestimate the
number and mass densities. By estimating the average halo masses of
the candidates (Mh∼4.2, 1.9, and 1.3x1012M☉ for redshift bins
centered at z=3.4, 4.1, and 4.7), we find them to be consistent with
halos that were efficient in turning baryons to stars, relatively
immune to the feedback effects, and on the verge of transition into
hot-mode accretion. This can suggest the relative cosmological
starvation of the cold gas followed by an overconsumption phase in
which the galaxy rapidly consumes the available cold gas as one of the
possible drivers for the quenching of the massive evolved population
at high redshift.
Description:
We use the latest photometric catalogs from the Cosmic Assembly
Near-infrared Deep Extragalactic Legacy Survey (CANDELS) with
consistent multiwaveband photometry and physical parameters for all
galaxies to the flux limit of the sample. Details about the selection
and photometry at different bands were carried out for all of the
CANDELS fields, consisting of Great Observatories Origins Deep Survey
(GOODS)-South, Ultra Deep Survey (UDS), COSMOS, Extended Groth Strip
(EGS), and GOODS-North. These catalogs contain observed photometry
from the UV to near-(NIR) and mid-infrared (MIR) wavelengths in many
broadband and narrowband filters, as well as inferred physical
parameters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 85 120 Candidate galaxies and their likelihood measures
from different methods
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See also:
IX/45 : The Chandra Source Catalog, Release 1.1 (Evans+ 2012)
IX/57 : The Chandra Source Catalog (CSC), Release 2.0 (Evans+, 2019)
J/ApJ/592/728 : Lyman break galaxies at redshift z∼3 (Steidel+, 2003)
J/MNRAS/382/109 : Massive galaxies in Extended Groth Strip (Trujillo+, 2007)
J/ApJ/655/51 : HDFS IRAC observations of 2<z<3.5 galaxies (Wuyts+, 2007)
J/ApJS/180/102 : AEGIS-X: Chandra deep survey (Laird+, 2009)
J/ApJ/739/L44 : Structural data for galaxies 0.2<z<2.7 (Damjanov+, 2011)
J/ApJS/206/10 : CANDELS multiwavelength catalog (Galametz+, 2013)
J/ApJS/207/24 : GOODS-S CANDELS multiwavelength catalog (Guo+, 2013)
J/ApJ/777/18 : Stellar mass functions of galaxies to z=4 (Muzzin+, 2013)
J/ApJS/220/10 : AEGIS-X Deep survey of EGS (AEGIS-XD) (Nandra+, 2015)
J/ApJ/801/97 : GOODS-S & UDS M* catalogs from CANDELS (Santini+, 2015)
J/ApJ/823/95 : CANDELS GOODS-S Chandra counterparts (Cappelluti+, 2016)
J/ApJ/819/62 : The COSMOS-Legacy Survey (CLS) catalog (Civano+, 2016)
J/ApJS/224/15 : Improved 2Ms and 250ks Chandra catalogs (Xue+, 2016)
J/ApJS/228/7 : Multi-wavelength data in CANDELS COSMOS field (Nayyeri+, 2017)
J/ApJS/229/32 : CANDELS: multiwavelength catalogs in the EGS (Stefanon+, 2017)
J/ApJS/235/17 : NuSTAR Extragalactic Surveys: UDS field (Masini+, 2018)
J/A+A/618/A85 : Spectroscopy of 3<z<4 quiescent galaxies (Schreiber+ 2018)
J/ApJ/890/7 : Environment of galaxies in 5 CANDELS fields (Chartab+, 2020)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Field CANDELS field
8- 12 I5 --- Name Candidate identifier
14 A1 --- f_Name [*+] Flag on Name (1)
16- 27 F12.8 deg RAdeg [34.2/215.4] Degree of right ascension (J2000)
29- 40 F12.8 deg DEdeg [-27.9/62.4] Degree of declination (J2000)
42- 45 F4.2 --- BBG [0/1] Likelihood based on the observed color
47- 50 F4.2 --- UVJ [0/1] UVJ colors
52- 55 F4.2 --- SED [0/1] SED fitting
57- 61 F5.2 [Msun] [Mass] [9.2/11.86] log Mass
63- 66 F4.2 Gyr Age [0.63/2.05] Age
68- 71 F4.2 --- z [2.8/5.11] Redshift
73 A1 --- f_z [*] Flag on z (2)
75- 79 A5 --- MIPS Detection in MIPS 24um
81- 85 A5 --- X-ray Detection in X-ray
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Note (1): The asterisks and plus signs next to the IDs show the
candidates found in the primary and secondary samples reported in
Merlin+, 2019MNRAS.490.3309M 2019MNRAS.490.3309M, respectively.
Note (2): The asterisk next to the redshift indicates those with
available spectroscopic redshifts.
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History:
From electronic version of the journal
(End) Prepared by Coralie Fix [CDS], 04-Oct-2021