2018A&A...620A...7G

Query : 2018A&A...620A...7G

2018A&A...620A...7G - Astronomy and Astrophysics, volume 620A, 7-7 (2018/12-1)

The XXL Survey. XXII. The XXL-North spectrophotometric sample and galaxy stellar mass function in X-ray detected groups and clusters.

GUGLIELMO V., POGGIANTI B.M., VULCANI B., ADAMI C., GASTALDELLO F., ETTORI S., FOTOUPOULOU S., KOULOURIDIS E., RAMOS CEJA M.E., GILES P., McGEE S., ALTIERI B., BALDRY I., BIRKINSHAW M., BOLZONELLA M., BONGIORNO A., BROWN M., CHIAPPETTI L., DRIVER S., ELYIV A., EVRARD A., GARILLI B., GROOTES M., GUENNOU L., HOPKINS A., HORELLOU C., IOVINO A., LIDMAN C., LISKE J., MAUROGORDATO S., OWERS M., PACAUD F., PALTANI S., PIERRE M., PLIONIS M., PONMAN T., ROBOTHAM A., SADIBEKOVA T., SCODEGGIO M., SERENO M., SMOLCIC V., TUFFS R., VALTCHANOV I., VIGNALI C. and WILLIS J.

Abstract (from CDS):

Context. The fraction of galaxies bound in groups in the nearby Universe is high (50% at z ∼ 0). Systematic studies of galaxy properties in groups are important in order to improve our understanding of the evolution of galaxies and of the physical phenomena occurring within this environment.
Aims. We have built a complete spectrophotometric sample of galaxies within X-ray detected, optically spectroscopically confirmed groups and clusters (G&C), covering a wide range of halo masses at z≤0.6.
Methods. In the context of the XXL survey, we analyse a sample of 164 G&C in the XXL-North region (XXL-N), at z≤0.6, with a wide range of virial masses (1.24x10¹³≤M_500,scal(M_☉)≤6.63x10¹⁴) and X-ray luminosities ((2.27x10⁴¹≤L_500,scal^XXL(erg/s)≤2.15x10⁴⁴). The G&C are X-ray selected and spectroscopically confirmed. We describe the membership assignment and the spectroscopic completeness analysis, and compute stellar masses. As a first scientific exploitation of the sample, we study the dependence of the galaxy stellar mass function (GSMF) on global environment.
Results. We present a spectrophotometric characterisation of the G&C and their galaxies. The final sample contains 132 G&C, 22 111 field galaxies and 2225 G&C galaxies with r-band magnitude <20. Of the G&C, 95% have at least three spectroscopic members, and 70% at least ten. The shape of the GSMF seems not to depend on environment (field versus G&C) or X-ray luminosity (used as a proxy for the virial mass of the system). These results are confirmed by the study of the correlation between mean stellar mass of G&C members and L_500,scal^XXL. We release the spectrophotometric catalogue of galaxies with all the quantities computed in this work.
Conclusions. As a first homogeneous census of galaxies within X-ray spectroscopically confirmed G&C at these redshifts, this sample will allow environmental studies of the evolution of galaxy properties.

Abstract Copyright: © ESO 2018

Journal keyword(s): X-rays: galaxies: clusters - galaxies: groups: general - galaxies: clusters: general - galaxies: luminosity function, mass function - galaxies: evolution

VizieR on-line data: <CDS Catalogue: IX/52>

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	NAME XMM-LSS Field	reg	02 18 00	-07 00.0						~	233	0

Query : 2018A&A...620A...7G

Basic data :

NAME XMM-LSS Field -- Region defined in the Sky
Origin of the objects types : (Ref) Object type as listed in the reference "Ref" (acronym) Object type linked to the acronym according to the original reference () Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases Other object types:	`reg ()`
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference ICRS coord. (ep=J2000) :	`02 18 00.0 -07 00 00 [ ] E 2004JCAP....9...11P`
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference FK4 coord. (ep=B1950 eq=1950) :	`02 15 30.9 -07 13 49 [ ]`
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference Gal coord. (ep=J2000) :	`172.4681 -61.2423 [ ]`
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode" maj-axis : major axis size (arc minutes) min-axis : minor axis size (arc minutes) angle : orientation angle (in degrees) (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam) quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the angular size reference Angular size (arcmin):	`480.0 480.0 0 (~) D` `2004JCAP....9...11P`

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NAME XMM-LSS Field

References (233 between 1850 and 2023) (Total 233)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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