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A multi-wavelength census of star formation activity in the young embedded cluster around Serpens/G3-G6

dc.contributor.authorDJUPVIK, A. A.
dc.contributor.authorANDRE, Ph.
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorBONTEMPS, Sylvain
dc.contributor.authorMOTTE, F.
dc.contributor.authorOLOFSSON, G.
dc.contributor.authorGAALFALK, M.
dc.contributor.authorFLOREN, H. -G.
dc.date.created2006
dc.date.issued2006
dc.identifier.issn0004-6361
dc.description.abstractEnAims. The aim of this paper is to characterise the star formation activity in the poorly studied embedded cluster Serpens/G3-G6, located ~ 45' (3 pc) to the south of the Serpens Cloud Core, and to determine the luminosity and mass functions of its population of Young Stellar Objects (YSOs). Methods. Multi-wavelength broadband photometry was obtained to sample the near and mid-IR spectral energy distributions to separate YSOs from field stars and classify the YSO evolutionary stage. ISOCAM mapping in the two filters LW2 (5-8.5 um) and LW3 (12-18 um) of a 19' x 16' field was combined with JHKs data from 2MASS, Ks data from Arnica/NOT, and L' data from SIRCA/NOT. Continuum emission at 1.3 mm (IRAM) and 3.6 cm (VLA) was mapped to study the cloud structure and the coldest/youngest sources. Deep narrow band imaging at the 2.12 um S(1) line of H2 from NOTCam/NOT was obtained to search for signs of bipolar outflows. Results. We have strong evidence for a stellar population of 31 Class II sources, 5 flat-spectrum sources, 5 Class I sources, and two Class 0 sources. Our method does not sample the Class III sources. The cloud is composed of two main dense clumps aligned along a ridge over ~ 0.5 pc plus a starless core coinciding with absorption features seen in the ISOCAM maps. We find two S-shaped bipolar collimated flows embedded in the NE clump, and propose the two driving sources to be a Class 0 candidate (MMS3) and a double Class I (MMS2). For the Class II population we find a best age of ~ 2 Myr and compatibility with recent Initial Mass Functions (IMFs) by comparing the observed Class II luminosity function (LF), which is complete to 0.08 L_sun, to various model LFs with different star formation scenarios and input IMFs.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enbrown dwarfs
dc.subject.enstars: formation
dc.subject.enstars: pre-main sequence
dc.subject.enstars: luminosity function
dc.subject.enmass function
dc.subject.enISM: jets and outflows
dc.subject.enstars: low-mass
dc.title.enA multi-wavelength census of star formation activity in the young embedded cluster around Serpens/G3-G6
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361:20065533
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
dc.identifier.arxivastro-ph/0608709
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.page789-803
bordeaux.volume458
bordeaux.peerReviewedoui
hal.identifierhal-00129262
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00129262v1
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