A multi-wavelength census of star formation activity in the young embedded cluster around Serpens/G3-G6
dc.contributor.author | DJUPVIK, A. A. | |
dc.contributor.author | ANDRE, Ph. | |
hal.structure.identifier | Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB] | |
hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
dc.contributor.author | BONTEMPS, Sylvain | |
dc.contributor.author | MOTTE, F. | |
dc.contributor.author | OLOFSSON, G. | |
dc.contributor.author | GAALFALK, M. | |
dc.contributor.author | FLOREN, H. -G. | |
dc.date.created | 2006 | |
dc.date.issued | 2006 | |
dc.identifier.issn | 0004-6361 | |
dc.description.abstractEn | Aims. 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.iso | en | |
dc.publisher | EDP Sciences | |
dc.subject.en | brown dwarfs | |
dc.subject.en | stars: formation | |
dc.subject.en | stars: pre-main sequence | |
dc.subject.en | stars: luminosity function | |
dc.subject.en | mass function | |
dc.subject.en | ISM: jets and outflows | |
dc.subject.en | stars: low-mass | |
dc.title.en | A multi-wavelength census of star formation activity in the young embedded cluster around Serpens/G3-G6 | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1051/0004-6361:20065533 | |
dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO] | |
dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph] | |
dc.identifier.arxiv | astro-ph/0608709 | |
bordeaux.journal | Astronomy and Astrophysics - A&A | |
bordeaux.page | 789-803 | |
bordeaux.volume | 458 | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-00129262 | |
hal.version | 1 | |
hal.popular | non | |
hal.audience | Non spécifiée | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-00129262v1 | |
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