J/ApJ/938/135ivo://CDS.VizieR/J/ApJ/938/135doi:10.26093/cds/vizier.19380135CDSMurphy E.J.2025-02-13T20:11:37Z2024-10-24T14:16:22ZCDS support team

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

cds-question@unistra.frgalaxiesstar-forming-regionsmagnetic-fieldsinfrared-sourcesradio-sourcesIn this paper, an investigation on the relative importance of the thermal gas, radiation, and (minimum-energy) magnetic pressures around ~200 star-forming regions in a sample of nearby normal and luminous infrared galaxies is presented. Given the range of galaxy distances, pressure estimates are made on spatial scales spanning ~0.1-3kpc. The ratio of thermal gas-to-radiation pressures does not appear to significantly depend on star formation rate surface density ({Sigma}_SFR_), but exhibits a steady decrease with increasing physical size of the aperture over which the quantities are measured. The ratio of magnetic-to-radiation pressures appears to be relatively flat as a function of {Sigma}_SFR_ and similar in value for both nuclear and extranuclear regions, but, unlike the ratio of thermal gas-to-radiation pressures, exhibits a steady increase with increasing aperture size. Furthermore, it seems that the magnetic pressure is typically weaker than the radiation pressure on subkiloparsec scales, and only starts to play a significant role on few-kiloparsec scales. When the internal pressure terms are summed, their ratio to the ({Sigma}_SFR_-inferred) kiloparsec-scale dynamical equilibrium pressure estimates is roughly constant. Consequently, it appears that the physical area of the galaxy disk, and not necessarily environment (e.g., nuclear versus extranuclear regions) or star formation activity, may play the dominant role in determining which pressure term is most active around star-forming regions. These results are consistent with a scenario in which a combination of processes acting primarily on different physical scales work collectively to regulate the star formation process in galaxy disks.2022ApJ...938..135Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/938/135CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/554/803 : New VLA Sky Survey (NVSS) Cat of IRAS 2Jy Galaxies (Yun+ 2001)J/AJ/126/1607 : IRAS Revised Bright Galaxy Sample (Sanders+, 2003)J/ApJ/671/333 : Aperture photometry in NGC 5194 (Kennicutt+, 2007)J/AJ/133/2559 : Compact radio sources in spiral galaxies. II. (Maddox+, 2007)J/AJ/136/2782 : Star formation efficiency in nearby galaxies (Leroy+, 2008)J/ApJ/703/517 : The Spitzer Local Volume Legacy: IR photometry (Dale+, 2009)J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)J/ApJS/190/233 : Spectroscopy & abundances of SINGS galaxies (Moustakas+, 2010)J/A+A/533/A119 : GOODS-Herschel North and South catalogs (Elbaz+, 2011)J/ApJ/761/97 : Star Formation in Radio Survey (SFRS): 33GHz (Murphy+, 2012)J/ApJS/234/24 : VLA 33GHz obs. of star-forming regions (Murphy+, 2018)J/ApJS/248/25 : SFRS: 3-33GHz VLA obs. of star-forming regions (Linden+, 2020)J/ApJ/892/148 : Molecular ISM in nearby star-forming galaxies (Sun+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/938/135https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/938/135http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/938/135https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/938/135https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/938/135http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/938/135GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/938/135/table1 (Estimated physical quantities for each region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/938/135/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/938/135/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/938/135/table1?GETtext/xml+votable180.050000true33.515333327.87719440.0055555555555555566/231 286 538 764 2320 4447 5181 5492 5715 5751 5799 7241 7602 7604 7624 7743 7799 10761 10841 10856 11026-11027 11434 11457 13522 15592-15593 16441 16755 16758 17252 17492 17594 17904 18398 18714 18897 23178 23339 24144 24232 25083 25946 26028 26035 26271 26811 27030 27340 27514 27555 27830 27861 27914 27937 28015 28035 28123 28167 28188 28496 29439 30810 31430 35993 36194 43845https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/938/135?format=asciiInfraredRadiodefaultJ/ApJ/938/135/table1Estimated physical quantities for each regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSetSample origin (1)meta.idcharGalGalaxy namemeta.id.part;meta.maincharEnucExtranuclear identifier within Galmeta.id.part;meta.maincharm_GalSource component identifiermeta.code.multipcharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainDap[0.1/2.8] Aperture diameter, D_Ap_kpcphys.size.diameterfloatSigSFR[0.02/45] Star formation rate surface density, {Sigma}_SFR_solMass.yr**-1.kpc**-2phys.SFR;phys.densityfloate_SigSFR[0.01/3] SigSFR uncertaintysolMass.yr**-1.kpc**-2stat.error;phys.SFR;phys.densityfloatPb[1.4/227] The magnetic pressure, P_B_; see Equation 2 (2)1e-12dyn.cm**-2phys.magField;phys.pressurefloate_Pb[0.4/96] Pb uncertainty1e-12dyn.cm**-2stat.error;phys.magField;phys.pressurefloatPcr[0.5/227] The cosmic ray (CR) pressure; see Equation 4 (2)1e-12dyn.cm**-2phys.pressurefloate_Pcr[0.16/67] Pcr uncertainty1e-12dyn.cm**-2stat.error;phys.pressurefloatPrad[1.2/807]? The radiation pressure; see Equation 8 (2)1e-12dyn.cm**-2phys.pressurefloatnullablee_Prad[0.06/760]? Prad uncertainty1e-12dyn.cm**-2stat.error;phys.pressurefloatnullablePth[3/140] The thermal gas pressure (2) (3)dyn.cm**-2phys.pressurefloate_Pth[1.9/37] Pth uncertaintydyn.cm**-2stat.error;phys.pressurefloatPde[8.9/26451] The dynamical equilibrium pressure; see Equation 13 (4)1e-12dyn.cm**-2phys.pressuredoublee_Pde[7/1532] Pde uncertainty1e-12dyn.cm**-2stat.error;phys.pressurefloatPturb[11/27946] The turbulent gas pressure (4)1e-12dyn.cm**-2phys.pressuredoublee_Pturb[8.4/1619] Pturb uncertainty1e-12dyn.cm**-2stat.errorfloatM18Display data from Murphy+ 2018, J/ApJS/234/24meta.ref.urlcharM12Display data from Murphy+ 2012, J/ApJ/761/97meta.ref.urlchar