2016MNRAS.463.1486P

Query : 2016MNRAS.463.1486P

2016MNRAS.463.1486P - Mon. Not. R. Astron. Soc., 463, 1486-1517 (2016/December-1)

Comparing Dark Energy Survey and HST-CLASH observations of the galaxy cluster RXC J2248.7-4431: implications for stellar mass versus dark matter.

PALMESE A., LAHAV O., BANERJI M., GRUEN D., JOUVEL S., MELCHIOR P., ALEKSIC J., ANNIS J., DIEHL H.T., HARTLEY W.G., JELTEMA T., ROMER A.K., ROZO E., RYKOFF E.S., SEITZ S., SUCHYTA E., ZHANG Y., ABBOTT T.M.C., ABDALLA F.B., ALLAM S., BENOIT-LEVY A., BERTIN E., BROOKS D., BUCKLEY-GEER E., BURKE D.L., CAPOZZI D., CARNERO ROSELL A., CARRASCO KIND M., CARRETERO J., CROCCE M., CUNHA C.E., D'ANDREA C.B., DA COSTA L.N., DESAI S., DIETRICH J.P., DOEL P., ESTRADA J., EVRARD A.E., FLAUGHER B., FRIEMAN J., GERDES D.W., GOLDSTEIN D.A., GRUENDL R.A., GUTIERREZ G., HONSCHEID K., JAMES D.J., KUEHN K., KUROPATKIN N., LI T.S., LIMA M., MAIA M.A.G., MARSHALL J.L., MILLER C.J., MIQUEL R., NORD B., OGANDO R., PLAZAS A.A., ROODMAN A., SANCHEZ E., SCARPINE V., SEVILLA-NOARBE I., SMITH R.C., SOARES-SANTOS M., SOBREIRA F., SWANSON M.E.C., TARLE G., THOMAS D., TUCKER D. and VIKRAM V.

Abstract (from CDS):

We derive the stellar mass fraction in the galaxy cluster RXC J2248.7-4431 observed with the Dark Energy Survey (DES) during the Science Verification period. We compare the stellar mass results from DES (5 filters) with those from the Hubble Space Telescope CLASH (17 filters). When the cluster spectroscopic redshift is assumed, we show that stellar masses from DES can be estimated within 25% of CLASH values. We compute the stellar mass contribution coming from red and blue galaxies, and study the relation between stellar mass and the underlying dark matter using weak lensing studies with DES and CLASH. An analysis of the radial profiles of the DES total and stellar mass yields a stellar-to-total fraction of f* = (6.8 ± 1.7) x 10–3 within a radius of r200c ~= 2 Mpc. Our analysis also includes a comparison of photometric redshifts and star/galaxy separation efficiency for both datasets. We conclude that space-based small field imaging can be used to calibrate the galaxy properties in DES for the much wider field of view. The technique developed to derive the stellar mass fraction in galaxy clusters can be applied to the ∼100 000 clusters that will be observed within this survey and yield important information about galaxy evolution.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): surveys - galaxies: clusters: general - galaxies: evolution - galaxies: photometry - galaxies: photometry

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ACO 383 ClG 02 48 03.3915 -03 31 45.228           ~ 389 0
2 MCS J0416.1-2403 ClG 04 16 08.380 -24 04 20.80           ~ 425 0
3 ClG J0429-0253 ClG 04 29 36.0 -02 53 09           ~ 131 0
4 ACO S 1063 ClG 22 48 45.4 -44 31 42           ~ 395 0

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