J/ApJ/816/98 Galaxies in X-ray clusters with DES. I. Stellar mass (Zhang+, 2016)
Galaxies in X-ray selected clusters and groups in Dark Energy Survey data.
I. Stellar mass growth of bright central galaxies since z∼1.2.
Zhang Y., Miller C., McKay T., Rooney P., Evrard A.E., Romer A.K.,
Perfecto R., Song J., Desai S., Mohr J., Wilcox H., Bermeo-Hernandez A.,
Jeltema T., Hollowood D., Bacon D., Capozzi D., Collins C., Das R.,
Gerdes D., Hennig C., Hilton M., Hoyle B., Kay S., Liddle A., Mann R.G.,
Mehrtens N., Nichol R.C., Papovich C., Sahlen M., Soares-Santos M.,
Stott J., Viana P.T., Abbott T., Abdalla F.B., Banerji M., Bauer A.H.,
Benoit-Levy A., Bertin E., Brooks D., Buckley-Geer E., Burke D.L.,
Carnero Rosell A., Castander F.J., Diehl H.T., Doel P., Cunha C.E.,
Eifler T.F., Fausti Neto A., Fernandez E., Flaugher B., Fosalba P.,
Frieman J., Gaztanaga E., Gruen D., Gruendl R.A., Honscheid K., James D.,
Kuehn K., Kuropatkin N., Lahav O., Maia M.A.G., Makler M., Marshall J.L.,
Martini P., Miquel R., Ogando R., Plazas A.A., Roodman A., Rykoff E.S.,
Sako M., Sanchez E., Scarpine V., Schubnell M., Sevilla I., Smith R.C.,
Sobreira F., Suchyta E., Swanson M.E.C., Tarle G., Thaler J., Tucker D.,
Vikram V., da Costa L.N.
<Astrophys. J., 816, 98 (2016)>
=2016ApJ...816...98Z 2016ApJ...816...98Z (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; X-ray sources ; Galaxies, optical ; Redshifts ;
Surveys
Keywords: galaxies: clusters: general; galaxies: evolution;
galaxies: groups: general
Abstract:
Using the science verification data of the Dark Energy Survey for a
new sample of 106 X-ray selected clusters and groups, we study the
stellar mass growth of bright central galaxies (BCGs) since redshift
z∼1.2. Compared with the expectation in a semi-analytical model
applied to the Millennium Simulation, the observed BCGs become
under-massive/under-luminous with decreasing redshift. We incorporate
the uncertainties associated with cluster mass, redshift, and BCG
stellar mass measurements into an analysis of a redshift-dependent
BCG-cluster mass relation,
m*∝(M200/1.5x1014M☉)0.24±0.08(1+z)^-0.19±0.34,
and compare the observed relation to the model prediction. We estimate
the average growth rate since z=1.0 for BCGs hosted by clusters of
M200,z=1013.8M☉; at z=1.0: m*,BCG appears to have grown by
0.13±0.11dex, in tension at the ∼2.5σ significance level with
the 0.40 dex growth rate expected from the semi-analytic model. We
show that the build-up of extended intracluster light after z=1.0 may
alleviate this tension in BCG growth rates.
Description:
The Dark Energy Survey (DES) is a ground-based optical survey that
uses the wide-field DECam camera mounted on the 4m Blanco telescope to
image 5000deg2 of the southern hemisphere sky (Sanchez et al.
2010JPhCS.259a2080S 2010JPhCS.259a2080S). The paper is based on 200deg2 DES Science
Verification (SV) data. This data set was taken during the 2012B
observing season before the main survey (Diehl et al.
2014SPIE.9149E..0VD) began.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 76 106 Bright central galaxies (BCGs) and their
host cluster properties
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See also:
B/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2012)
J/MNRAS/446/3943 : galaxies 2D phot. decompositions in SDSS-DR7 (Meert+, 2015)
J/MNRAS/444/L63 : SFRs of Brightest Cluster Galaxies (Fraser-McKelvie+, 2014)
J/MNRAS/424/2086 : LX-T relation in galaxy clusters (Hilton+, 2012)
J/MNRAS/423/1024 : XCS-DR1 Cluster Catalogue (Mehrtens+, 2012)
J/MNRAS/423/422 : Early-type BCGs with star formation (Liu+, 2012)
J/ApJS/172/615 : GALFIT result for GEMS galaxies (Haussler+, 2007)
J/MNRAS/379/867 : BCG C4 cluster catalog (von der Linden+, 2007)
J/ApJ/662/808 : Cusp radius in luminous elliptical galaxies (Lauer+, 2007)
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 [1/106] Running sequence number
5- 10 A6 --- --- [XMMXCS]
12- 30 A19 --- XMMXCS Cluster name (JHHMMSS.s+DDMMSS.s or
JHHMMSS.ss+DDMMSS.s)
32- 36 F5.2 --- M200 [13.5/15.2] Cluster mass M200 (1)
38- 41 F4.2 --- e_M200 [0.1/0.4] M200 uncertainty
43- 47 F5.3 --- z [0.06/1.3] Cluster redshift
49- 53 F5.3 --- e_z [0/0.2] z uncertainty
55- 59 F5.2 --- M* [10.2/12.3] BCG stellar mass
61- 64 F4.2 --- e_M* [0.06/0.5] M* uncertainty
66- 71 F6.2 --- Lum [-25/-21.1] BCG Dark Energy Survey (DES)
z-band luminosity
73- 76 F4.2 --- e_Lum [0.03/1.09] Lum uncertainty
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Note (1): The mass inside a three-dimensional (3D) aperture within which the
averaged matter density is 200 times the critical density.
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 24-Mar-2016