Star formation in the Vela Molecular Clouds: Near IR images

T. Giannini (1) , D. Lorenzetti (1) , B. Nisini (1) , L. Spinoglio (1) , Annie Zavagno (2, 1) , R. Liseau (3) , P. Andreani (4) , A. Moneti (5)

1 Earth Observation Programmes Directorate [Frascati]
2 LAM - Laboratoire d'Astrophysique de Marseille
3 Stockholm Observatory Department of Astronomy
4 Dipartimento di Fisica e Astronomia "Galileo Galilei"
5 ESA - ESTEC (Netherlands)

We present the first results of a sensitive (K ≈ 17 mag) near IR (JHK) imaging survey of a complete IRAS selected sample of Young Stellar Objects (YSO’s) belonging to a Giant Molecular Cloud (GMC) located in the Vela Molecular Ridge (VMR). The same objects have also been observed at λ = 1.3mm. We provide identifications (i.e. NIR counterparts) and detailed spectral energy distributions (SED’s) for ten newly identified Class I objects. The envelope masses are consistent with central masses derivable from the observed luminosities. Detected multiplicity indicates that intermediate mass star formation might not represent an individual and isolated phenomenon.

Keywords: Star Formation; Molecular Cloud; Young Stellar Object; Bolometric Luminosity; IRAS Source

Domains: Sciences of the Universe [physics]

T. Giannini, D. Lorenzetti, B. Nisini, L. Spinoglio, Annie Zavagno, et al.. Star formation in the Vela Molecular Clouds: Near IR images. The Role of Dust in the Formation of Stars, ESO Astrophysics Symposia (European Southern Observatory)., 1995, Garching, Germany. pp.27-30, ⟨10.1007/978-3-540-68594-4_7⟩. ⟨hal-03562798⟩