J/AJ/113/1939ivo://CDS.VizieR/J/AJ/113/1939doi:10.26093/cds/vizier.51131939CDSDickey J. M.2023-04-06T16:50:24Z1998-06-11T15:57:38ZCDS support team

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

cds-question@unistra.frgalaxy-clustersh-i-line-emissionThis paper presents results from a survey of lambda 21-cm emission from galaxies in the Hercules cluster, A2151 and A2147. Four VLA primary beam areas were covered, a total area of 0.9 square degrees, including some 120 spiral galaxies brighter than 17.5m. The velocity resolution is 44km/s, the angular resolution 25". The detection threshold at field center is 2.6x10^8 h^{-2}M_{sun}_ in H I mass or about 1.8x10^20cm^-2^ in column density. There are 61 galaxies detected in H I, of which about 25 had been previously detected at lambda 21-cm. About ten of the detections correspond to galaxies that are very faint in the optical, m_E_>=18 or M>=-17mag-5logh. Some of these low surface brightness galaxies have very extended H I disks, with r>=15kpc. The abundance of H I is a strong function of position in the cluster, with galaxies in the south and west showing hardly any gas, and galaxies in the north and east of A2151 frequently having massive, extended gas disks. The morphology of the remnants of gas in galaxies in the south and west suggests that the intracluster medium is responsible for their H I deficiency, but there are also several dramatic galaxy mergers in progress. (c) 1997 American Astronomical Society.1997AJ....113.1939Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/113/1939CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/113/1939https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/113/1939http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/113/1939https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/113/1939https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/113/1939http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/113/1939GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/113/1939/table2 (Galaxies detected in H I)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/113/1939/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/113/1939/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/113/1939/table2?GETtext/xml+votable180.050000true241.799523318.45246460.0055555555555555566/8514 8520-8521 8524 8526-8527https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/113/1939?format=asciiRadiodefaultJ/AJ/113/1939/table2Galaxies detected in H IrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileName of the file in eps sub-directorymeta.id;meta.filecharAliasGalaxy alias (1)meta.id;meta.maincharprimaryNameOther namemeta.idcharRAB1950Right ascension (B1950)pos.eq.ra;meta.mainDEB1950Declination (B1950)pos.eq.dec;meta.mainV0Center velocitykm/sphys.velocintDVWidth velocitykm/sspect.line.widthintfpbPrimary beam attenuation factorinstr.paramfloatAreaArea used for H I mass determinations (2)pixphys.angSize;srcintMHIH I mass obtained from spectra integrals1e+08solMassphys.massfloatMextMaximum total H I mass obtained by extending the area1e+08solMassphys.massfloatMpeakH I mass contained within the central beam area1e+08solMassphys.massfloatMintMass determined form the integrated flux1e+08solMassphys.massfloatJ/AJ/113/1939/table3Channel map centersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAliasGalaxy aliasmeta.id;meta.maincharprimaryczCenter velocity of the channelkm/sphys.veloc;pos.heliocentricintoRA*Right ascension offsetarcsecpos.eq.ra;arith.diffintoDE*Declination offsetarcsecpos.eq.dec;arith.diffintMpeak*Peak H I mass in the channel1e+08solMassphys.massfloatMint*Integrated H I mass in the channel1e+08solMassphys.massfloat