J/AJ/147/106ivo://CDS.VizieR/J/AJ/147/106doi:10.26093/cds/vizier.51470106CDSYan P.-F.Yuan Q.-R.Zhang L.Zhou X.2016-01-22T08:53:55Z2014-11-17T12:20:45ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxy-clustersgalaxy-classification-systemsredshiftedAsymmetric X-ray emission and a powerful cluster-scale radio halo indicate that A2319 is a merging cluster of galaxies. This paper presents our multicolor photometry for A2319 with 15 optical intermediate filters in the Beijing-Arizona-Taiwan-Connecticut (BATC) system. There are 142 galaxies with known spectroscopic redshifts within the viewing field of 58'x58' centered on this rich cluster, including 128 member galaxies (called sample I). A large velocity dispersion in the rest frame, 1622_-70_^+91^km/s, suggests merger dynamics in A2319. The contour map of projected density and localized velocity structure confirm the so-called A2319B substructure, at ~10' northwest to the main concentration A2319A. The spectral energy distributions (SEDs) of more than 30000 sources are obtained in our BATC photometry down to V~20mag. A u-band (~3551{AA}) image with better seeing and spatial resolution, obtained with the Bok 2.3m telescope at Kitt Peak, is taken to make star-galaxy separation and distinguish the overlapping contamination in the BATC aperture photometry. With color-color diagrams and photometric redshift technique, 233 galaxies brighter than h_BATC_=19.0 are newly selected as member candidates after an exclusion of false candidates with contaminated BATC SEDs by eyeball-checking the u-band Bok image. The early-type galaxies are found to follow a tight color-magnitude correlation. Based on sample I and the enlarged sample of member galaxies (called sample II), subcluster A2319B is confirmed. The star formation properties of cluster galaxies are derived with the evolutionary synthesis model, PEGASE, assuming a Salpeter initial mass function and an exponentially decreasing star formation rate (SFR). A strong environmental effect on star formation histories is found in the manner that galaxies in the sparse regions have various star formation histories, while galaxies in the dense regions are found to have shorter SFR time scales, older stellar ages, and higher interstellar medium metallicities. For the merging cluster A2319, local surface density is a better environmental indicator rather than the cluster-centric distance. Compared with the well-relaxed cluster A2589, a higher fraction of star-forming galaxies is found in A2319, indicating that the galaxy-scale turbulence stimulated by the subcluster merger might have played a role in triggering the star formation activity.2014AJ....147..106Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/147/106CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/110 : Rich Clusters of Galaxies (Abell+ 1989)VII/4 : Abell and Zwicky Clusters of Galaxies (Abell+ 1974)J/other/RAA/12.1381 : BATC photometry on A119 (Tian+, 2012)J/ApJS/199/26 : The 2MASS Redshift Survey (2MRS) (Huchra+, 2012)J/AJ/141/99 : BATC and SDSS photometry of A2589 cluster (Liu+, 2011)J/other/RAA/10.1 : BATC photometry in A98 cluster (Zhang+, 2010)J/ApJS/149/53 : Multicolor photometry of A2255 galaxies (Yuan+, 2003)J/A+A/397/361 : BATC photometry of Landolt SA95 field (Zhou+, 2003)J/AJ/122/1718 : Multicolor photometry in Abell 2634 (Yuan+, 2001)J/ApJS/112/245 : Redshift survey for IRAS galaxies (Nakanishi+ 1997)J/AJ/112/1803 : Large Scale Structure (Marzke+ 1996)J/AJ/112/628 : BATC Color Survey of M67 (Fan+ 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/147/106https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/147/106http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/147/106https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/147/106https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/147/106http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/147/106GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/147/106/table2 (Catalog of 128 spectroscopically confirmed member galaxies in A2319)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/147/106/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/147/106/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/147/106/table2?GETtext/xml+votable180.050000true290.17208343.9547220.005555555555555556Cone search capability for table J/AJ/147/106/table4 (Catalog of 233 newly selected member galaxies in A2319)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/147/106/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/147/106/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/147/106/table4?GETtext/xml+votable180.050000true290.570791743.55641670.0055555555555555566/14941 15106 15107 15112 15113https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/147/106?format=asciiOpticaldefaultJ/AJ/147/106/table2Catalog of 128 spectroscopically confirmed member galaxies in A2319Sub[AB] A=main cluster A2319A, B=subcluster A2319Bmeta.id.parentcharGalaxy[1/128] Running sequence number of the galaxy \dicS{[YYZ2014] I NNN} in Simbadmeta.id;meta.mainintprimaryRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainzspSpectroscopic redshiftsrc.redshiftdoubleRefReference (1)meta.ref;pos.framecharJ/AJ/147/106/table4Catalog of 233 newly selected member galaxies in A2319Galaxy[1/233] Running sequence number of the galaxy \dicS{[YYZ2014] II NNN} in Simbadmeta.id;meta.mainintprimaryRAJ2000Right Ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (1)degpos.eq.dec;meta.mainzphPhotometric redshiftsrc.redshiftfloatMT[1/7] Morphological classification (2)meta.code;src.morphint