J/A+A/425/417ivo://CDS.VizieR/J/A+A/425/417doi:10.26093/cds/vizier.34250417CDSKong Xu2004-11-21T14:15:45Z2004-11-21T15:11:24ZCDS support team

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

cds-question@unistra.frgalaxiesspectroscopyUsing Halpha, [OII]3727, infrared (IR), radio (1.4GHz) luminosities and neutral hydrogen (HI) gas masses, we estimated star formation rates and gas depletion timescales of 72 star-forming blue compact galaxies (BCGs) To assess the possible systematic differences among different star formation rate indicators, we compared the star formation rates derived from Halpha, [OII]3727, IR, and radio luminosities, and investigated the effects from underlying stellar absorption and dust extinction. We found that subtracting underlying stellar absorption is very important to calculate both dust extinction and star formation rate of galaxies. Otherwise, the intrinsic extinction will be overestimated, the star formation rates derived from [OII]3727 and Halpha will be underestimated (if the underlying stellar absorption and the internal extinction were not corrected from the observed luminosity) or overestimated (if an overestimated internal extinction were used for extinction correction). After both the underlying stellar absorption and the dust extinction were corrected, a remarkably good correlation emerges among Halpha, [OII]3727, IR and radio star formation rate indicators.2004A&A...425..417Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/425/417CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/389/845 : Spectra of blue compact galaxies. I (Kong+, 2002)J/A+A/396/503 : Spectra of blue compact galaxies. II (Kong+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/425/417https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/425/417http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/425/417https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/425/417https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/425/417http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/425/417GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/425/417/table1 (SFRs and gas depletion timescales of BCGs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/425/417/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/425/417/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/425/417/table1?GETtext/xml+votable180.050000true11.98541722.3730560.0055555555555555566/548 650 2119 4147 4446 4599 4844 4956 5040 5186 5203 5263 5891 6042 6046 6104 6360 7281 7891 7900 7926 7954 8562 8939 9095 9098 9102 9190 9688 9786 9899 10011 10130 10212 10344 10354 10378 10425 10427 10465 10472 10583 10765 10956 10970 10982 11143 11164 11180 11232 11355 12613 13346 13463 16884 17871 19910 20015 20177 20212 20400 22841 22974 23010 23566 26302 27071 28099 28156 28557https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/425/417?format=asciiOpticaldefaultJ/A+A/425/417/table1SFRs and gas depletion timescales of BCGsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSFROIIStar Formation Rate from [OII]3727solMass/yrphys.SFRfloatSFRHaStar Formation Rate from Halpha6563solMass/yrphys.SFRfloatSFRIRStar Formation Rate from IR luminosity (1)solMass/yrphys.SFRfloatSFR1.4Star Formation Rate from 1.4GHz radio continuum (2)solMass/yrphys.SFRfloatMHINeutral hydrogen gas mass, in solar mass (3)solMassphys.massdoubletauOIIGas depletion timescale from [OII]3727 (4)Gyrtime.scalefloattauHaGas depletion timescale from Halpha6563Gyrtime.scalefloattauIRGas depletion timescale from IRGyrtime.scalefloattau1.4Gas depletion timescale from 1.4GHz continuumGyrtime.scalefloatBMAGGalaxy absolute magnitude in B bandmagphys.magAbs;em.optfloat