J/ApJ/704/842ivo://CDS.VizieR/J/ApJ/704/842doi:10.26093/cds/vizier.17040842CDSBlanc G.A.Heiderman A.Gebhardt K.Evans N.J.Adams J.2011-12-26T14:06:29Z2011-12-08T14:43:32ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyinterstellar-mediumWe investigate the relation between the star formation rate (SFR) surface density ({Sigma}_SFR_) and the mass surface density of gas ({Sigma}_gas_) in NGC 5194 (a.k.a. M51a, Whirlpool Galaxy). Visible Integral field Replicable Unit Spectrograph Prototype (VIRUS-P) integral field spectroscopy of the central 4.1x4.1kpc^2^ of the galaxy is used to measure H{alpha}, H{beta}, [OIII]5007, [NII]6548,6584, and [SII]6717,6731 emission line fluxes for 735 regions ~170pc in diameter. We use the Balmer decrement to calculate nebular dust extinctions, and correct the observed fluxes in order to accurately measure {Sigma}_SFR_ in each region. Archival HI 21cm and CO maps with spatial resolution similar to that of VIRUS-P are used to measure the atomic and molecular gas surface density for each region.2009ApJ...704..842Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/704/842CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/671/333 : Aperture photometry in NGC 5194 (Kennicutt+, 2007)J/ApJ/633/871 : Positions and photometry of HII knots in M51 (Calzetti+, 2005)J/A+A/309/446 : HII Regions in M51 (Petit+, 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/704/842https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/704/842http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/704/842https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/704/842https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/704/842http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/704/842GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/704/842/table1 (Nebular emission line fluxes, gas surface densities, and SFR surface densities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/704/842/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/704/842/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/704/842/table1?GETtext/xml+votable180.050000true202.450458347.20988890.0055555555555555566/11027https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/704/842?format=asciiOpticaldefaultJ/ApJ/704/842/table1Nebular emission line fluxes, gas surface densities, and SFR surface densitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDRunning identification numbermeta.id;meta.mainintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainHbThe H{beta} line flux (1)1e-19W.m**-2phot.flux;em.line.Hbetafloate_HbUncertainty in Hb (1)1e-19W.m**-2stat.errorfloatN6548The [NII](6548) line flux (1)1e-19W.m**-2phot.flux;spect.linefloate_N6548Uncertainty in N6548 (1)1e-19W.m**-2stat.errorfloatHaThe H{alpha} line flux (1)1e-19W.m**-2phot.flux;em.line.Halpha;spect.linefloate_HaUncertainty in Ha (1)1e-19W.m**-2stat.errorfloatN6584The [NII](6584) line flux (1)1e-19W.m**-2phot.flux;spect.linefloate_N6584Uncertainty in N6584 (1)1e-19W.m**-2stat.errorfloatS6717The [SII](6717) line flux (1)1e-19W.m**-2phot.flux;spect.linefloate_S6717Uncertainty in S6717 (1)1e-19W.m**-2stat.errorfloatS6731The [SII](6731) line flux (1)1e-19W.m**-2phot.flux;spect.linefloate_S6731Uncertainty in S6731 (1)1e-19W.m**-2stat.errorfloatSigH2Molecular H_2_ gas surface densitysolMass.pc**-2phot.flux.density.sbfloate_SigH2Uncertainty in SigH2solMass.pc**-2stat.errorfloatSigHIAtomic HI gas surface densitysolMass.pc**-2phot.flux.density.sb;em.line.HIfloate_SigHIUncertainty in SigHIsolMass.pc**-2stat.errorfloatSigSFRStar formation rate surface densitysolMass.yr**-1.kpc**-2phys.SFRdoublee_SigSFRUncertainty in SigSFRsolMass.yr**-1.kpc**-2stat.errordouble