Star-forming region BBW 36 in puppis |
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| Authors: | A L Gyulbudahgian J May |
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| Institution: | (1) V. A. Ambartsumian Byurakan Astrophysical Observatory, Byurakan, Armenia;(2) Departamento de Astronomia, Universidad de Chile, Santiago, Chile |
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| Abstract: | Recent studies of the star formation region BBW 36 and associated molecular clouds are presented. The 12CO (1-0) observations, carried out with the 15-m SEST (Swedish-ESO) telescope (Cerro La Silla, Chile), revealed the existence
of cloud a, connected with BBW 36 and of cloud b, having elongation in SE-NW direction. A red-shifted molecular outflow with
velocity ∼+5 km/s (with respect to cloud a), having a direction parallel to the line of sight, was also observed. VLA observations
showed the presence of a source VLA 2 at 3.6 cm with an elongation in the N-S direction. It is suggested that the VLA 2 source
coincides with a dust disc (surrounding the object BBW 36). The star 3, which is one of the YSOs in the star-forming region
BBW 36 and is connected with a bright comma-like nebula, can be the source of the molecular outflow. The star 3 has very high
IR colors and is associated with an IRAS point source IRAS 07280-1829, which has IR colors, typical for an IRAS point source,
connected with a water maser. On the 2MASS K image of BBW 36 we can see the existence of a bright nebula; a group of stars
is embedded in that nebula, and among these stars there are stars with dust discs (or envelopes). On the 2MASS K image several
spiral jets are also present, some of them with a condensation at the end.
Published in Astrofizika, Vol. 51, No. 3, pp. 469–477 (August 2008). |
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| Keywords: | star-forming region:molecular clouds:molecular outflow:spiral jets |
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