SIMBAD references

2006A&A...458..789D - Astronomy and Astrophysics, volume 458, 789-803 (2006/11-2)

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

DJUPVIK A.A., ANDRE P., BONTEMPS S., MOTTE F., OLOFSSON G., GALFALK M. and FLOREN H.-G.

Abstract (from CDS):

The aim of this paper is to characterise the star formation activity in the poorly studied embedded cluster Serpens/G3-G6, located ∼45' (3pc) to the south of the Serpens Cloud Core, and to determine the luminosity and mass functions of its population of Young Stellar Objects (YSOs). 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 (5-8.5µm) and LW3 (12-18µm) of a 19'x16' field was combined with JHKS data from 2MASS, KS data from Arnica/NOT, and L' data from SIRCA/NOT. Continuum emission at 1.3mm (IRAM) and 3.6cm (VLA) was mapped to study the cloud structure and the coldest/youngest sources. Deep narrow band imaging at the 2.12µm S(1) line of H2 from NOTCam/NOT was obtained to search for signs of bipolar outflows. We have strong evidence for a stellar population of 31 ClassII sources, 5 flat-spectrum sources, 5 ClassI sources, and two Class0 sources. Our method does not sample the ClassIII sources. The cloud is composed of two main dense clumps aligned along a ridge over ∼0.5pc 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 Class0 candidate (MMS3) and a double ClassI (MMS2). For the ClassII population we find a best age of ∼2Myr and compatibility with recent Initial Mass Functions (IMFs) by comparing the observed ClassII luminosity function (LF), which is complete to 0.08L, to various model LFs with different star formation scenarios and input IMFs.

Abstract Copyright:

Journal keyword(s): stars: formation - stars: pre-main sequence - stars: luminosity function, mass function - ISM: jets and outflows - stars: low-mass, brown dwarfs

VizieR on-line data: <Available at CDS (J/A+A/458/789): table1.dat table2.dat table3.dat>

Nomenclature: Table 1: [DAB2006] ISO-NNN (Nos 1 to 186). Table 2: [DAB2006] NOT-NNNN (Nos 1 to 1148). Table 3: [DAB2006] SIRCA-NN (Nos 1 to 46). Table 7: [DAB2006] MMSN (Nos MMS1 to MMS4), [DAB2006] MMS1-a (Nos 1-a to 1-d). Table 8: [DAB2006] VLA-N (Nos 1 to 9). Text: NAME Serpens NH3.

Simbad objects: 217

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