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The Mass Distributions of Starless and Protostellar Cores in Gould Belt Clouds

dc.contributor.authorSADAVOY, S. I.
dc.contributor.authorDI FRANCESCO, J.
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
dc.contributor.authorBONTEMPS, Sylvain
dc.contributor.authorMEGEATH, S. T.
dc.contributor.authorREBULL, L. M.
dc.contributor.authorALLGAIER, E.
dc.contributor.authorCAREY, S.
dc.contributor.authorGUTERMUTH, R.
dc.contributor.authorHORA, J.
dc.contributor.authorHUARD, T.
dc.contributor.authorMCCABE, C. -E.
dc.contributor.authorMUZEROLLE, J.
dc.contributor.authorNORIEGA-CRESPO, A.
dc.contributor.authorPADGETT, D.
dc.contributor.authorTEREBEY, S.
dc.date.created2010
dc.date.issued2010
dc.identifier.issn0004-637X
dc.description.abstractEnUsing data from the SCUBA Legacy Catalogue (850 um) and Spitzer Space Telescope (3.6 - 70 um), we explore dense cores in the Ophiuchus, Taurus, Perseus, Serpens, and Orion molecular clouds. We develop a new method to discriminate submillimeter cores found by SCUBA as starless or protostellar, using point source photometry from Spitzer wide field surveys. First, we identify infrared sources with red colors associated with embedded young stellar objects (YSOs). Second, we compare the positions of these YSO-candidates to our submillimeter cores. With these identifications, we construct new, self-consistent starless and protostellar core mass functions (CMFs) for the five clouds. We find best fit slopes to the high-mass end of the CMFs of -1.26 +/- 0.20, -1.22 +/- 0.06, -0.95 +/- 0.20, and -1.67 +/- 0.72 for Ophiuchus, Taurus, Perseus, and Orion, respectively. Broadly, these slopes are each consistent with the -1.35 power-law slope of the Salpeter IMF at higher masses, but suggest some differences. We examine a variety of trends between these CMF shapes and their parent cloud properties, potentially finding a correlation between the high-mass slope and core temperature. We also find a trend between core mass and effective size, but we are very limited by sensitivity. We make similar comparisons between core mass and size with visual extinction (for A_V >= 3) and find no obvious trends. We also predict the numbers and mass distributions of cores that future surveys with SCUBA-2 may detect in each of these clouds.
dc.language.isoen
dc.publisherAmerican Astronomical Society
dc.subject.endust
dc.subject.enextinction
dc.subject.enISM: clouds
dc.subject.enstars: formation
dc.subject.enstars: luminosity function
dc.subject.enmass function
dc.subject.enstars: protostars
dc.title.enThe Mass Distributions of Starless and Protostellar Cores in Gould Belt Clouds
dc.typeArticle de revue
dc.identifier.doi10.1088/0004-637X/710/2/1247
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
dc.identifier.arxiv1001.0978
bordeaux.journalThe Astrophysical Journal
bordeaux.page1247-1270
bordeaux.volume710
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-00460475
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00460475v1
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