J/MNRAS/479/3509ivo://CDS.VizieR/J/MNRAS/479/3509doi:10.26093/cds/vizier.74793509CDSShao L.Koribalski B.S.Wang J.Ho L.C.Staveley-Smith L.2024-08-18T20:20:40Z2018-09-18T08:59:53ZCDS support team

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

cds-question@unistra.frsurveysgalaxiesinfrared-sourcesradio-galaxiesh-i-line-emissiongalaxy-classification-systemsultraviolet-astronomyIn this paper we measure the far-infrared (FIR) and radio flux densities of a sample of 82 local gas-rich galaxies, including 70 "dwarf" galaxies (M_*_<10^9^M_{sun}_), from the Local Volume HI Survey (LVHIS), which is close to volume limited. It is found that LVHIS galaxies hold a tight linear FIR-radio correlation (FRC) over four orders of magnitude. However, for detected galaxies only, a trend of larger FIR-to-radio ratio with decreasing flux density is observed. We estimate the star formation rate by combining UV and mid-IR data using empirical calibration. It is confirmed that both FIR and radio emission are strongly connected with star formation but with significant non-linearity. Dwarf galaxies are found radiation deficient in both bands, when normalized by star formation rate. It urges a "conspiracy" to keep the FIR-to-radio ratio generally constant. By using partial correlation coefficient in Pearson definition, we identify the key galaxy properties associated with the FIR and radio deficiency. Some major factors, such as stellar mass surface density, will cancel out when taking the ratio between FIR and radio fluxes. The remaining factors, such as HI-to-stellar mass ratio and galaxy size, are expected to cancel each other due to the distribution of galaxies in the parameter space. Such cancellation is probably responsible for the "conspiracy" to keep the FRC alive.2018MNRAS.479.3509Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/479/3509CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/479/3509https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/479/3509http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/479/3509https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/479/3509https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/479/3509http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/479/3509GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/479/3509/sample (Basic properties (table 1) and flux measurements (table 2) of the LVHIS sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/479/3509/sample?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/479/3509/sample?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/479/3509/sample?GETtext/xml+votable180.050000true2.0557-34.578330.0055555555555555566/16414 16441 16459 16519 16544 16655 16701 20510 20532 24602 24632 24713 24715 33193 33571 33655-33656 33685 33742 33986 34189 35206 35214 35243 35482 35514 35536 36974 37437 38102 38259 38329 38390 38673 38941 39043 39575 41122 41132 41432 41586 41760 41849 41917 41946 41949 41987 43100 43231 43233 43245 43262 43293 43307 43333 43420 43427 43430 43438 43451 43605 43634 43706 43727 43763 43797 43809 43874 43878 43881 43883-43884 43921 43924-43925 43972 45305 46339 46597 479529.276497240453405e-25 9.276497240453405e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/479/3509?format=asciiUVOpticalInfraredRadiodefaultJ/MNRAS/479/3509/sampleBasic properties (table 1) and flux measurements (table 2) of the LVHIS sampleSimbadNameSimbad column added by the CDSmeta.idcharDEJ2000Declination (J2000)degpos.eq.dec;meta.mainNameOptical counterpartmeta.idcharHIPASSHIPASS IDmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLVHIS[001/082] LVHIS IDmeta.id;meta.mainintprimaryRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDistDistanceMpcpos.distancefloatMTypeMorphological typesrc.morph.typecharlogMstar? Stellar masslog(solMass)phys.massfloatnullablelogMHI? HI masslog(solMass)phys.massfloatnullablerms? 1.4GHz image rmsmJy/beaminstr.det.noisefloatnullableAperMaj? Major axis of photometry aperturearcsecphys.angSizefloatnullableAperMin? Minor axis of photometry aperturearcsecphys.angSize;srcfloatnullableAperPA? Position angle of photometry aperturedegpos.posAng;instr.fovintnullablel_F1.4Upper limit flag of 1.4GHz flux densitymeta.code.errorcharF1.4? 1.4GHz flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_F1.4? Uncertainty of 1.4GHz flux densitymJystat.errorfloatnullablef_F1.4[0-5] Measurement flag of 1.4GHz flux density (1)meta.codecharr_F1.4[a-f] Literature reference of 1.4GHz flux density (2)meta.ref;pos.framecharl_F60Upper limit flag of 60um flux densitymeta.code.errorcharF60? 60 micron flux densityJyphot.flux.density;em.IR.30-60umdoublenullablee_F60? Uncertainty of 60um flux densityJystat.errorfloatnullablel_F100Upper limit flag of 100um flux densitymeta.code.errorcharF100? 100 micron flux densityJyphot.flux.density;em.IR.60-100umfloatnullablee_F100? Uncertainty of 100um flux densityJystat.errorfloatnullablel_FFIRUpper limit flag of FIR flux densitymeta.code.errorcharFFIR? FIR flux density1e-14W.m**-2phot.flux.densityfloatnullablee_FFIR? Uncertainty of FIR flux density1e-14W.m**-2stat.errorfloatnullablegoldindicates data in table 4 (gold sample)thatmeta.ref.urlcharJ/MNRAS/479/3509/table4Derived galaxy properties of gold sampleD2525mag/arcsec^2 diameter in B bandkpcphys.angSizefloate_consUncertainty of stellar light concentrationstat.errorfloatconsStellar light concentrationphys.size;arith.ratiofloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLVHIS[001/082] LVHIS IDmeta.id;meta.mainintNameOptical counterpartmeta.idcharlogMstarStellar masslog(solMass)phys.massfloate_logMstarUncertainty of stellar masslog(solMass)stat.errorfloatlogSFRStar formation ratelog(solMass.yr**-1)phys.SFRfloate_logSFRUncertainty of tar formation ratelog(solMass.yr**-1)stat.error;phys.SFRfloatlogMHIHI masslog(solMass)phys.massfloate_logMHIUncertainty of HI masslog(solMass)stat.errorfloate_D25Uncertainty of 25mag/arcsec^2 diameter in B bandkpcstat.errorfloatRUVFUV 50 percent light radiuskpcphys.size.radiusfloate_RUVUncertainty of FUV 50 percent light radiuskpcstat.errorfloatlogmustarStellar mass surface densitylog(solMass.kpc**-2)phys.densityfloate_logmustarUncertainty of stellar mass surface densitylog(solMass.kpc**-2)stat.errorfloatlogmuSFRStar formation rate surface densitylog(solMass.yr**-1.kpc**-2)phys.SFRfloate_logmuSFRUncertainty of star formation rate surface densitylog(solMass.yr**-1.kpc**-2)stat.errorfloat