J/MNRAS/462/3766ivo://CDS.VizieR/J/MNRAS/462/3766doi:10.26093/cds/vizier.74623766CDSCook D.O.Dale D.A.Lee J.C.Thilker D.Calzetti D.Kennicutt R.C.2024-08-16T20:18:42Z2018-07-03T14:09:50ZCDS support team

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

cds-question@unistra.frgalaxiesstar-forming-regionsWe present the first study of GALEX far-ultraviolet (FUV) luminosity functions of individual star-forming regions within a sample of 258 nearby galaxies spanning a large range in total stellar mass and star formation properties. We identify ~65000 star-forming regions (i.e. FUV sources), measure each galaxy's luminosity function, and characterize the relationships between the luminosity function slope ({alpha}) and several global galaxy properties. A final sample of 82 galaxies with reliable luminosity functions are used to define these relationships and represent the largest sample of galaxies with the largest range of galaxy properties used to study the connection between luminosity function properties and galaxy environment. We find that {alpha} correlates with global star formation properties, where galaxies with higher star formation rates and star formation rate densities ({Sigma}_SFR_) tend to have flatter luminosity function slopes. In addition, we find that neither stochastic sampling of the luminosity function in galaxies with low-number statistics nor the effects of blending due to distance can fully account for these trends. We hypothesize that the flatter slopes in high {Sigma}_SFR_ galaxies is due to higher gas densities and higher star formation efficiencies which result in proportionally greater numbers of bright star-forming regions. Finally, we create a composite luminosity function composed of star-forming regions from many galaxies and find a break in the luminosity function at brighter luminosities. However, we find that this break is an artefact of varying detection limits for galaxies at different distances.2016MNRAS.462.3766Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/462/3766CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/703/517 : The Spitzer Local Volume Legacy: IR photometry (Dale+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/462/3766https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/462/3766http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/462/3766https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/462/3766https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/462/3766http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/462/3766GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/462/3766/table1 (General galaxy properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/462/3766/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/462/3766/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/462/3766/table1?GETtext/xml+votable180.050000true0.4923333-15.46091670.0055555555555555566/396 764 2121 2130 2155 2282 4181 4511 5061 5067 5116 5132 5142 5174 5202-5203 5230 5283 5287 5329 5504 5584 5607 5636 5978 6502 6604-6605 6623 6649 7239 7471 7523 7530 7577 7582 7599-7600 7602-7604 7606-7607 7618 7622 7624 7649-7650 7743 7769 7786 7799 7878 7946 7956 7970 8120 8908 10153 10265 10532 10538 10561 10607 10627 10659 10755 10761-10762 10767 10793 10798-10800 10809 10818 10840-10841 10847 10856 10881 10888 10896-10897 10900-10901 10905 10908 10910-10911 10935 10941 10954 10959 10970 10976-10977 10979 10986 10998-10999 11006 11019 11027 11030 11045 11084 11092 11120 11127 11140 11143 11227 11434 11444 11448 11639 11681 11696 11933 11944 11961 11965 12047 12199 13637 16441 16459 16519 16544 16595 16605 16655 16682 16695 16697 16701 16744 16779 16833 17165 18032 18041 18378 18398 18419 18429 19717 19779 19990 21026-21027 24912 24952 24956 25017 25083 26047 26814 26858 26977 27030 27055 27351 27375 27383 27465 27512 27514 27568 27591 27604 27643 27926 28015 28087 28091 28149 28167 28172-28173 28184 28451 28468 28510 28535 28608 28610 28631 28636-28637 28666 33096 33151 33193 33265 33295 33571 33655-33656 33685 33832 33927 33966 33986 34297 34401 34403-34404 34471 34641 35206 35214 35243 35482 35514 35536 36164 38841 38846 43706 43874 43878 43881 43883 43925 43972 45305 45367 45777 45914 45937 46339 46460 46545 46549 46597 48942https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/462/3766?format=asciidefaultJ/MNRAS/462/3766/table1General galaxy propertiesSimbadNameSimbad column added by the CDSmeta.idcharNameGalaxy namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainDistDistance from Kennicutt et al. (2008, Cat. J/ApJS/178/247)Mpcpos.distancefloatTtypeOptical morphology from Kennicutt et al. (2008, Cat. J/ApJS/178/247)meta.noteint