J/MNRAS/489/4669ivo://CDS.VizieR/J/MNRAS/489/4669doi:10.26093/cds/vizier.74894669CDSSaburova A.S.Chilingarian I.V.Kasparova A.V.Katkov I.Y.,Fabricant D.G.Uklein R.I.2024-08-20T20:13:08Z2023-02-14T14:09:04ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopygalaxy-rotationvisible-astronomygalaxy-kinematicsThe dominant physical processes responsible for the formation and longevity of giant gaseous and stellar discs in galaxies remain controversial. Although they are rare (less than 10 confirmed as of now), giant low-surface brightness (gLSB) discy galaxies provide interesting insights given their extreme nature. We describe observations of UGC 1378 including deep spectroscopy with the Russian 6-m telescope and multiband imaging with Binospec at the MMT. Galaxy UGC 1378 has both high surface brightness and an extended low surface brightness discs. Our stellar velocity dispersion data for the high surface brightness, Milky Way sized, disc appears inconsistent with a recent major merger, a widely discussed formation scenario for the very extended low surface brightness disc. We estimate the star formation rates (SFRs) from archival Wide-Field Infrared Survey Explorer data. The SFR surface density in the LSB disc is low relative to its gas density, consistent with recent gas accretion. We argue that the unusually large size of UGC 1378's disc may be the product of a rich gas reservoir (e.g. a cosmic filament) and an isolated environment that has preserved the giant disc.2019MNRAS.489.4669Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/489/4669CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/489/4669https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/489/4669http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/489/4669https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/489/4669https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/489/4669http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/489/4669GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/489/4669/ugc1378 (UGC 1378 basic information)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/489/4669/ugc1378?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/489/4669/ugc1378?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/489/4669/ugc1378?GETtext/xml+votable180.050000true29.0802573.282716670.0055555555555555566/3968https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/489/4669?format=asciiOpticaldefaultJ/MNRAS/489/4669/ugc1378UGC 1378 basic informationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharNameGalaxy name (UGC 1378)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVLOSVelocity radial profilemeta.ref.urlcharVDISPVelocity dispersion radial profilemeta.ref.urlcharh3h4Gauss-Hermite coefficients radial profilemeta.ref.urlcharAgeAge radial profilemeta.ref.urlcharZMetallicity radial profilemeta.ref.urlcharJ/MNRAS/489/4669/hbetaResults of the analysis of H{beta} emission line of UGC 1378recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRRadiusarcsecphys.angSizedoublevLOSLine of sight velocity of ionized gas measured in H{beta} linekm/sspect.dopplerVelocdoublee_vLOSError on vLOSkm/sstat.errordoublevdispVelocity dispersionkm/sphys.veloc.dispersiondoublee_vdispError on vdispkm/sstat.errordoubleFHbFlux of the H{beta} line0.01W.m**-2.nm**-1phot.flux;spect.linedoublee_FHbError on FHb0.01W.m**-2.nm**-1stat.errordoubleJ/MNRAS/489/4669/o3Results of the analysis of [OIII] emission line of UGC 1378RRadiusarcsecphys.angSizedoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintvLOSLine of sight velocity of ionized gas measured in [OIII] linekm/sspect.dopplerVelocdoublee_vLOSError on vLOSkm/sstat.errordoublevdispVelocity dispersionkm/sphys.veloc.dispersiondoublee_vdispError on vdispkm/sstat.errordoubleF[OIII]Flux on the [OIII] line0.01W.m**-2.nm**-1phot.flux;spect.linedoublee_F[OIII]Error on F[OIII]0.01W.m**-2.nm**-1stat.errordoubleJ/MNRAS/489/4669/starsThe properties of stellar population of UGC 1378 obtained from the spectral analysise_ZError on Zstat.errordoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRRadiusarcsecphys.angSizedoublevLOSLine of sight velocity of ionized gas measured in starskm/sspect.dopplerVelocdoublee_vLOSError on vLOSkm/sstat.errordoublevdispVelocity dispersionkm/sphys.veloc.dispersiondoublee_vdispError on vdispkm/sstat.errordoubleh3Gauss-Hermite moment h3 (1)stat.fit.paramdoublee_h3Error on h3stat.errordoubleh4Gauss-Hermite moment h4 (1)stat.fit.paramdoublee_h4Error on h4stat.errordoubleAgeAge from simple stellar population (SSP) model best-fitGyrtime.agedoublee_AgeError on AgeGyrstat.error;time.agedoubleZMetallicity from simple stellar population (SSP) model best-fitphys.abund.Zdouble