J/ApJ/889/185 Environment in galaxy evolution in SERVS. I. (Krefting+, 2020)
The role of environment in galaxy evolution in the SERVS survey.
I. Density maps and cluster candidates.
Krefting N., Sajina A., Lacy M., Nyland K., Farrah D., Darvish B.,
Duivenvoorden S., Duncan K., Gonzalez-perez V., Lagos C.D.P., Oliver S.,
Shirley R., Vaccari M.
<Astrophys. J., 889, 185-185 (2020)>
=2020ApJ...889..185K 2020ApJ...889..185K (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy; Redshifts; Cross identifications; Surveys
Keywords: Galaxy clusters; Redshift surveys
Large-scale structure of the universe; Galaxy cluster counts
Abstract:
We use photometric redshifts derived from new u-band through 4.5µm
Spitzer IRAC photometry in the 4.8deg2 of the XMM-LSS field to
construct surface density maps in the redshift range of 0.1-1.5. Our
density maps show evidence for large-scale structure in the form of
filaments spanning several tens of megaparsecs. Using these maps, we
identify 339 overdensities that our simulated light-cone analysis
suggests are likely associated with dark matter halos with masses,
Mhalo, log(Mhalo/M☉)>13.7. From this list of overdensities
we recover 43 of 70 known X-ray-detected and spectroscopically
confirmed clusters. The missing X-ray clusters are largely at lower
redshifts and lower masses than our target log(Mhalo/M☉)>13.7.
The bulk of the overdensities are compact, but a quarter show extended
morphologies that include likely projection effects, clusters embedded
in apparent filaments, and at least one potential cluster merger (at
z∼1.28). The strongest overdensity in our highest-redshift slice (at
z∼1.5) shows a compact red galaxy core, potentially implying a massive
evolved cluster.
Description:
Our photometric data rely on the multiwavelength coverage of the
Spitzer Extragalactic Representative Volume Survey (SERVS; see
Mauduit+ 2012PASP..124..714M 2012PASP..124..714M), which provides deep Spitzer IRAC 3.6
and 4.5um data.
In this paper we focus on the XMM-LSS field, for which a new multiband
photometric catalog has been constructed using forced photometry
(Nyland+ 2017, J/ApJS/230/9 and K. Nyland et al. 2020, in preparation).
See Section 2.1.
The XMM-LSS field has significant spectroscopic redshift coverage.
This is primarily from the VIMOS VLT Deep Survey (VVDS;
Le Fevre+ 2013, J/A+A/559/A14) and the VIMOS Ultra-Deep Survey (VUDS;
Le Fevre+ 2015A&A...576A..79L 2015A&A...576A..79L). These data are complemented by other
surveys; see Section 2.2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 73 339 Overdensities selected in the XMM-LSS field
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See also:
III/334 : VISTA Deep Extragalactic Observations (VIDEO) (Jarvis+, 2013)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
J/A+A/556/A55 : Multi-color photometry of star-forming galaxies (Ilbert+, 2013)
J/A+A/559/A14 : VIMOS VLT Deep Survey final data release (Le Fevre+, 2013)
J/ApJ/805/121 : Overdensities of 0<z<3 COSMOS galaxies (Darvish+, 2015)
J/ApJS/224/24 : The COSMOS2015 catalog (Laigle+, 2016)
J/ApJS/230/9 : Improved multi-band photometry from SERVS (Nyland+, 2017)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [1/339] Overdensity sequential running identifier
5- 11 F7.4 deg RAdeg [34/37.1] Right Ascension, decimal degrees (J2000)
13- 19 F7.4 deg DEdeg [-5.6/-4.1] Declination, decimal degrees (J2000)
21- 25 F5.3 --- zmin [0.1/1.4] Minimum of full redshift range
for overdensity
27- 31 F5.3 --- zmax [0.19/1.7] Maximum of full redshift range
for overdensity
33- 34 I2 --- Nsp [0/26] Number of spectra (1)
36- 43 A8 --- Morph Morphology ("extended" for 92 overdensities)
45- 47 I3 --- XLSSC [5/203]? XLSSC identifier number
49 A1 --- u_z [~] Uncertainty flag on zlit
50- 54 F5.3 --- z [0.14/1.28]? Literature redshift
56- 62 A7 --- r_z Redshift reference(s) (2)
64- 73 A10 --- Note Note ("pot.merger", 1 occurence)
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Note (1): The number of spectra includes only high quality spectroscopic
redshifts within a circle of 750kpc (proper) of the overdensity center.
Note (2): Redshift references as follows:
A18 = Adami et al. (2018A&A...620A...5A 2018A&A...620A...5A);
C14 = Clerc et al. (2014MNRAS.444.2723C 2014MNRAS.444.2723C);
B06 = Bremer et al. (2006MNRAS.371.1427B 2006MNRAS.371.1427B);
vB07 = van Breukelen et al. (2007MNRAS.382..971V 2007MNRAS.382..971V).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 16-Jul-2021