J/MNRAS/510/1716ivo://CDS.VizieR/J/MNRAS/510/1716doi:10.26093/cds/vizier.75101716CDSReynolds T.N.Catinella B.Cortese L.Westmeier T.Meurer G.R.,Shao L.Obreschkow D.Roman J.Verdes-Montenegro L.Deg N.Denes H.,For B.-Q.Kleiner D.Koribalski B.S.Lee-Waddell K.Murugeshan C.,Oh S.-H.Rhee J.Spekkens K.Staveley-Smith L.Stevens A.R.H.,Van der Hulst J.M.Wang J.Wong O.I.Holwerda B.W.Bosma A.,Madrid J.P.Bekki K.2025-02-13T20:15:34Z2024-11-15T09:10:37ZCDS support team

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

cds-question@unistra.frgalaxy-clustersgalaxy-groupsgalaxiesintergalactic-mediumvisible-astronomynarrow-band-photometryh-i-line-emissionradio-sourcesultraviolet-astronomyinfrared-astronomystar-forming-regionsastrometrygalaxy-kinematicsgalaxy-radiistellar-massesWe present results from our analysis of the Hydra I cluster observed in neutral atomic hydrogen (H I) as part of the Widefield ASKAP L-band Legacy All-sky Blind Survey (WALLABY). These WALLABY observations cover a 60-square-degree field of view with uniform sensitivity and a spatial resolution of 30 arcsec. We use these wide-field observations to investigate the effect of galaxy environment on H I gas removal and star formation quenching by comparing the properties of cluster, infall, and field galaxies extending up to ~5R200 from the cluster centre. We find a sharp decrease in the H I-detected fraction of infalling galaxies at a projected distance of ~1.5*R_200_ from the cluster centre from ~85 per cent to ~35 per cent. We see evidence for the environment removing gas from the outskirts of H I-detected cluster and infall galaxies through the decrease in the H I to r-band optical disc diameter ratio. These galaxies lie on the star-forming main sequence, indicating that gas removal is not yet affecting the inner star-forming discs and is limited to the galaxy outskirts. Although we do not detect galaxies undergoing galaxy-wide quenching, we do observe a reduction in recent star formation in the outer disc of cluster galaxies, which is likely due to the smaller gas reservoirs present beyond the optical radius in these galaxies. Stacking of H I non-detections with H I masses below M_HI_ <~ 10^8.4^{M}_{sun}_ will be required to probe the H I of galaxies undergoing quenching at distances ~> 60 Mpc with WALLABY.2022MNRAS.510.1716Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/510/1716CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/259 : 6dF galaxy survey final redshift release (Jones+, 2009)J/MNRAS/460/2143 : HI size-mass relation of galaxiesII/335 : Revised catalog of GALEX UV sources (GUVcat_AIS GR6+7)https://doi.org/10.25919/5f7bde37c20b5 : ASKAP Science data archivehttps://ps1images.stsci.edu/cgi-bin/ps1cutouts : PanSTARRS image access serverhttp://galex.stsci.edu/data : GALEX DR6+7 NUV band imaginghttp://unwise.me/data/neo6/unwise-coadds/fulldepth : W1 imaging datahttp://unwise.me/data/allwise/unwise-coadds/fulldepth : W3/W4 imaging datahttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/510/1716https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/510/1716http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/510/1716https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/510/1716https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/510/1716http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/510/1716GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/510/1716/tablea1 (Measured and derived properties for galaxies detected in H I with WALLABY)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/510/1716/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/510/1716/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/510/1716/tablea1?GETtext/xml+votable180.050000true150.9-26.489720.005555555555555556Cone search capability for table J/MNRAS/510/1716/tablea2 (Measured and derived properties for galaxies in the 6dFGS catalogue that are not detected in H I with WALLABY)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/510/1716/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/510/1716/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/510/1716/tablea2?GETtext/xml+votable180.050000true151.5925-26.832750.0055555555555555565/9691 9708-9709 9712-9713 9715-9716 6/38719 38756 38758-38759 38761-38763 38768 38776 38778 38805 38807 38810 38813-38814 38821 38841 38843-38845 38847 38868 38870 38872-38874 38880-38881 38883-38885 38888https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/510/1716?format=asciiUVOpticalInfraredRadiodefaultJ/MNRAS/510/1716/tablea1Measured and derived properties for galaxies detected in H I with WALLABYDLDistance luminosity (DL) (G2)Mpcpos.distancedoubler/R200Ratio of the projected distance r to Hydra I virial radius R_200_ (r/R_200_) (G3)pos.distance;arith.ratiodoubledv/sigmaRatio of the galaxy relative velocity {Delta}v to Hydra I velocity dispersion {sigma}_disp_ = 676 +/- 35 km/s ({Delta}v/{sigma}_disp_)phys.veloc;arith.diffdoublelog(M*)? Logarithm of the galaxy stellar mass in M_{sun}_ unit (logM*/M_{sun}_) (G4)log(solMass)phys.massdoublenullablelog(MHI)Logarithm of the H I mass in M_{sun}_ unit (logMHI/M_{sun}_) (G5)log(solMass)phys.massdoubledHIDiameter of the H I disc (d_HI_) (G6)arcsecphys.size.diameterdoubledoptOptical r-band diameter as the size of the galaxy (DIAMETER_R) (G7)arcsecphys.angSizedoubledNUV? NUV GALEX band diameter as the size of the galaxy (DIAMETER_NUV) (G8)arcsecphys.angSizedoublenullableSFR? The total NUV + MIR star formation rate (SFR_NUV+MIR ) (G9)arcsecphys.SFRdoublenullablef_SFR[0/1] Flag indicates when the SFR is computed with magnitudes upper limit value (SFR_UPLIM)meta.codeint_RAPosition from WALLABY name (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from WALLABY name (declination part)degpos.eq.dec;meta.mainnullableSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWALLABYWALLABY identifier (JHHMMSS+DDMMSS) (WALLABY_ID)meta.id;meta.maincharGroupEnvironment group (Environment) (G1)src.classcharJ/MNRAS/510/1716/tablea2Measured and derived properties for galaxies in the 6dFGS catalogue that are not detected in H I with WALLABYSFR? The total NUV + MIR star formation rate (SFR_NUV+MIR ) (G9)arcsecphys.SFRdoublenullablef_SFR[0/1] Flag indicates when the SFR is computed with magnitudes upper limit value (SFR_UPLIM)meta.codeintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint6dFGS6dFGS identifier (gHHMMSSs+DDMMSS) (6dFGS_ID) (1)meta.id;meta.maincharGroupEnvironment group (Environment) (G1)src.classcharDLDistance luminosity (DL) (G2)Mpcpos.distancedoubler/R200Ratio of the projected distance r to Hydra I virial radius R_200_ (r/R_200_) (G3)pos.distance;arith.ratiodoubledv/sigmaRatio of the galaxy relative velocity {Delta}v to Hydra I velocity dispersion {sigma}_disp_ = 676 +/- 35 km/s ({Delta}v/{sigma}_disp_)phys.veloc;arith.diffdoublelog(M*)? Logarithm of the galaxy stellar mass in M_{sun}_ unit (logM*/M_{sun}_) (G4)log(solMass)phys.massdoublenullablelog(MHI)? Logarithm of the H I mass in M_{sun}_ unit (logMHI/M_{sun}_) (G5)log(solMass)phys.massfloatnullabledHI? Diameter of the H I disc (d_HI_) (G6)arcsecphys.size.diameterdoublenullabledoptOptical r-band diameter as the size of the galaxy (DIAMETER_R) (G7)arcsecphys.angSizedoubledNUV? NUV GALEX band diameter as the size of the galaxy (DIAMETER_NUV) (G8)arcsecphys.angSizedoublenullable_RAPosition from 6dFGS name (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from 6dFGS name (declination part)degpos.eq.dec;meta.mainnullableSimbadNameSimbad column added by the CDSmeta.idcharnullable