J/A+A/446/839ivo://CDS.VizieR/J/A+A/446/839doi:10.26093/cds/vizier.34460839CDSGavazzi G.Boselli A.Cortese L.Arosio I.Gallazzi A.Pedotti P.,Carrasco L.2006-04-16T10:04:56Z2006-04-16T10:02:42ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxiesphotometryvisible-astronomyh-alpha-photometryline-intensitiesWe present the H{alpha} imaging observations of 273 late-type galaxies in the nearby rich galaxy clusters Virgo, A 1367, Coma, Cancer, Hercules and in the Great Wall, carried out primarily with the 2.1m telescope of the San Pedro Martir Observatory (SPM) and with the ESO/3.6m telescope. We derived the H{alpha}+[NII] fluxes and equivalent widths. The H{alpha} survey reached completion for an optically selected sample of nearby galaxies in and outside rich clusters. Taking advantage of the completeness of the data set, the dependence of H{alpha} properties on the Hubble type was determined for late-type galaxies in the Virgo cluster. Differences in the gaseous content partly account for the large scatter of the H{alpha} EW within each Hubble-type class. We studied the radial distributions of the H{alpha} EW around Coma+A 1367 and the Virgo clusters in two luminosity bins. Luminous galaxies show a decrease in their average H{alpha} EW in the inner ~1 virial radius, while low-luminosity galaxies do not show this trend. Description:2006A&A...446..839Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/446/839CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/190 : Zwicky Galaxy Catalog (Zwicky+ 1968)J/AJ/90/1681 : The Virgo Cluster Catalog (VCC) (Binggeli+, 1985)J/A+A/396/449 : H{alpha} surface photometry in Virgo (Gavazzi+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/446/839https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/446/839http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/446/839https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/446/839https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/446/839http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/446/839GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/446/839/table1 (The target galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/446/839/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/446/839/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/446/839/table1?GETtext/xml+votable180.050000true182.353541713.57452780.0055555555555555565/2599 6575 6584 6917 6930 6934 6964 6/4716 4718-4719 4801 4803-4804 4806-4807 8477 8518 8522 8548 9463 9471 9812 10282 10291 10368 10375 10377 10379 10382-10384 10389 10391 10393-10395 10401-10402 10404 10408 10410 10412 10435 10440 26217 26222 26261 26267-26268 26293-26295 26309 26320 26342 26344 26346-26349 26361 26364 26537 27653-27654 27677 27712 27714-27716 27718-27719 27724-27725 27727-27728 27731 27735 27747-27749 27751 27761 27763-27764 27766 27770-27771 27860 27862-27863 27869 27899 27903-27904 27913 27936 27939-27940 27944-27945 27948 27951 27967 28032 28036 28038 28046 28059 28066 28069 28076 28089-28090 28099 28107-28108 28112 28123 28146-28148 28152 28156 28159 28242 28246-28247 28249 28251-28252 28254-28255 28278-28279 28284 28417 28422 28428 28432 28434 28437 28444 28446 28455 28482 28485 28488 28493 28498-28499 28501 28503 28527 28557 28572https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/446/839?format=asciiOpticaldefaultJ/A+A/446/839/table1The target galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameVCC/CGCG designationmeta.id;meta.maincharprimaryNGC/ICNGC/IC name (NNNNN or INNNN)meta.idcharUGC? UGC numbermeta.idintnullableRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainadiamMajor optical diameter (1)arcminphys.angSizefloatbdiamMinor optical diameter (1)arcminphys.angSizefloatHVR? Heliocentric velocity (2)km/sspect.dopplerVeloc;pos.heliocentricintnullableClusterMembership in a cluster or supercluster (3)meta.id.parentcharDist? Distance, assuming H_0_=75km/s/Mpc.Mpcpos.distancefloatnullableMTypeMorphological type (4)src.morph.typecharphmag? Photographic magnitudemagphot.mag;em.opt.BfloatnullableBTmag? Total B magnitude (5)magphot.mag;em.opt.BfloatnullableJ/A+A/446/839/table2The results of the present observations (target galaxies + VCC 343)TelTelescope code (1)meta.code;instr.telcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy designationmeta.id;meta.maincharObs.YYear of the observationyrtime.epochintlambdaCentral wavelength of the ON-band filter0.1nmem.wl.centralintRONTransmissivity R_ON_ of the ON-band filter at the redshifted H{alpha} linephys.transmission;instr.filterfloatnNormalization factor n of the OFF-band frame, C_NET_=C_ON_-n*C_OFF_arith.factorfloatNexpNumber of combined exposuresmeta.numberintTONIntegration time of the individual ON band exposuresstime.duration;obs.exposureintZpPhotometric Zero point, such that LogFlux=Zp+Log(C_NET_)-Log(T_ON_)log(mW.m**-2)phot.mag;arith.zpfloatPQ[PC] Flag indicating whether the frame was taken under photometric (P) or through light cirrus (C)meta.codecharEWHaH{alpha} equivalent width as determined from this work0.1nmspect.line.eqWidth;em.line.Halphainte_EWHa? rms uncertainty on EWHA0.1nmstat.errorintnullablelogFHa? Logarithm of the H{alpha} flux as determined from this worklog(mW.m**-2)phot.flux;em.line.Halphafloatnullablee_logFHa? rms uncertainty on logFHalog(mW.m**-2)stat.errorfloatnullableEWHal? H{alpha} equivalent width from the literature0.1nmspect.line.eqWidth;em.line.HalphaintnullablelogFHal? Logarithm of the H{alpha} flux from the literaturelog(mW.m**-2)phot.flux;em.line.Halphafloatnullabler_logFHal? Reference for EWHal and logFHalmeta.bibintnullableJ/A+A/446/839/refsReferencesComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorchar