J/MNRAS/493/4591 Stellar mass as a galaxy cluster mass proxy (Palmese+, 2020)
Stellar mass as a galaxy cluster mass proxy:
application to the Dark Energy Survey redMaPPer clusters.
Palmese A., Annis J., Burgad J., Farahi A., Soares-Santos M., Welch B.,
da Silva Pereira M., Lin H., Bhargava S., Hollowood D.L., Wilkinson R.,
Giles P., Jeltema T., Romer A.K., Evrard A.E., Hilton M.,
Vergara Cervantes C., Bermeo A., Mayers J., Derose J., Gruen D.,
Hartley W.G., Lahav O., Leistedt B., Mcclintock T., Rozo E., Rykoff E.S.,
Varga T.N., Wechsler R.H., Zhang Y., Avila S., Brooks D., Buckley-Geer E.,
Burke D.L., Carnero Rosell A., Carrasco Kind M., Carretero J.,
Castander F.J., Collins C., da Costa L.N., Desai S., De Vicente J.,
Diehl H.T., Dietrich J.P., Doel P., Flaugher B., Fosalba P., Frieman J.,
Garcia-Bellido J., Gerdes D.W., Gruendl R.A., Gschwend J., Gutierrez G.,
Honscheid K., James D.J., Krause E., Kuehn K., Kuropatkin N., Liddle A.,
Lima M., Maia M.A.G., Mann R.G., Marshall J.L., Menanteau F., Miquel R.,
Ogando R.L.C., Plazas A.A., Roodman A., Rooney P., Sahlen M., Sanchez E.,
Scarpine V., Schubnell M., Serrano S., Sevilla-Noarbe I., Sobreira F.,
Stott J., Suchyta E., Swanson M.E.C., Tarle G., Thomas D., Tucker D.L.,
Viana P.T.P., Vikram V., Walker A.R., (the DES Collaboration)
<Mon. Not. R. Astron. Soc., 493, 4591-4606 (2020)>
=2020MNRAS.493.4591P 2020MNRAS.493.4591P (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Surveys ; Redshifts ; X-ray sources
Keywords: surveys - galaxies: clusters: general - galaxies: evolution -
galaxies: haloes - cosmology: observations
Abstract:
We introduce a galaxy cluster mass observable, µ*, based on the
stellar masses of cluster members, and we present results for the Dark
Energy Survey (DES) Year 1 (Y1) observations. Stellar masses are
computed using a Bayesian model averaging method, and are validated
for DES data using simulations and COSMOS data. We show that µ*
works as a promising mass proxy by comparing our predictions to X-ray
measurements. We measure the X-ray temperature-µ* relation for a
total of 129 clusters matched between the wide-field DES Y1 redMaPPer
catalogue and Chandra and XMM archival observations, spanning the
redshift range 0.1<z<0.7. For a scaling relation that is linear in
logarithmic space, we find a slope of α=0.488±0.043 and a
scatter in the X-ray temperature at fixed µ* of
σlnTX|µ*= 0.266+0.019-0.020 for the joint sample. By
using the halo mass scaling relations of the X-ray temperature from
the Weighing the Giants program, we further derive the
µ*-conditioned scatter in mass, finding
σlnM|µ*=0.26+0.15-0.10. These results are competitive
with well-established cluster mass proxies used for cosmological
analyses, showing that µ* can be used as a reliable and
physically motivated mass proxy to derive cosmological constraints.
Description:
The DES is an optical-to-near-infrared survey that imaged 5000deg2
of the South Galactic Cap in the grizY bands over 575 nights spanning
almost 6yr. The survey was carried out using a ∼3deg2 CCD camera
(the DECam, see Flaugher et al. 2015AJ....150..150F 2015AJ....150..150F) mounted on the
Blanco 4-m telescope at the Cerro Tololo Inter-American Observatory
(CTIO) in Chile. The data used here come from the first year of
observations (2013 September-2014 February, Diehl et al.
2014SPIE.9149E..0VD) and cover 1839deg2 with up to four passes per
filter. The data are available at
http://des.ncsa.illinois.edu/releases/y1a1.
The cluster catalogue used here is the cosmology Y1 redMaPPer
catalogue v6.4.14 with richness λ>5, which consists of 87297
clusters. This sample is then matched to archival X-ray observations
from Chandra and X-ray MultiMirror Mission (XMM). We use these X-ray
data to measure an X-ray temperature at the position of redMaPPer
clusters, rather than cross-matching with existing X-ray cluster
catalogues.
While the cluster catalogue is based on Y1 data, the photometry comes
from the deeper Year 3 data (Abbott et al. 2018ApJS..239...18A 2018ApJS..239...18A, Cat.
II/357). The photometry is the result of the Multi-Object Fitting
(MOF) pipeline that uses the NGMIX code.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablea1.dat 101 64 Chandra clusters
tablea2.dat 92 70 XMM clusters
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See also:
II/357 : The Dark Energy Survey (DES): Data Release 1 (Abbott+, 2018)
B/chandra : The Chandra Archive Log (CXC, 1999-2014)
J/MNRAS/423/1024 : XCS-DR1 Cluster Catalogue (Mehrtens+, 2012)
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 F5.3 --- z Cluster photometric redshift computed by
redMaPPer
7- 13 F7.3 deg RAdeg Right ascension (J2000)
15- 21 F7.3 deg DEdeg Declination (J2000)
23- 28 F6.2 --- lambda RedMaPPer richness
30- 34 F5.2 --- e_lambda Error on lambda
36- 42 F7.2 --- mu* Stellar mass-based cluster mass proxy
(see Section 3.2)
44- 49 F6.2 --- e_mu* Error on mu*
51- 55 F5.2 keV kTX X-ray temperature
57- 60 F4.2 keV E_kTX Upper error on kTX
62- 65 F4.2 keV e_kTX Lower error on kTX
67- 101 A35 --- Obsids Chandra Obsids
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 F5.3 --- z Cluster photometric redshift computed by
redMaPPer
7- 13 F7.3 deg RAdeg Right ascension (J2000)
15- 21 F7.3 deg DEdeg Declination (J2000)
23- 28 F6.2 --- lambda RedMaPPer richness
30- 33 F4.2 --- e_lambda Error on lambda
35- 41 F7.2 --- mu* Stellar mass-based cluster mass proxy
(see Section 3.2)
43- 48 F6.2 --- e_mu* Error on mu*
50- 54 F5.2 keV kTX X-ray temperature
56- 60 F5.2 keV E_kTX Upper error on kTX
62- 66 F5.2 keV e_kTX Lower error on kTX
68- 92 A25 --- Name Cluster name (XMMXCS JHHMMSS.s-DDMMSS.s)
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History:
From electronic version of the journal
(End) Ana Fiallos [CDS] 04-May-2023