Two new young stellar objects with bipolar outflows in L379

Kelly, M.L. and Macdonald, G.H. (1996) Two new young stellar objects with bipolar outflows in L379. Monthly Notices of the Royal Astronomical Society, 282 (2). pp. 401-412. ISSN 0035-8711. (The full text of this publication is not available from this repository)

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Abstract

L379 IRS1, the brightest of three deeply embedded IRAS sources in L379, has been resolved into two submillimetre sources associated with newly discovered outflow material. (CO)-C-12 J = 2-->1 maps of the region near IRS1 show complicated wing emission which is interpreted as two molecular outflows centred north and south of IRS1. (CO)-O-18 J = 2-->1 integrated emission has a simpler structure, but position-velocity diagrams reveal two distinct components of emission representing clouds separated by similar to 0.3 pc in declination and similar to 2.0 km s(-1) in velocity. Continuum maps at 450, 800 and 1100 Irm all delineate two clumps located 0.2 pc north and 0.14 pc south of IRS1, connected by an are of emission west of IRS1. These dust clumps are positioned at or close to the projected centre of each molecular outflow and close to the two (CO)-O-18 components. They are massive and cold: similar to 1000 and 680 M(.) at 22 and 24 K for the northern and southern components respectively. L379 IRS1 is probably a site of high-mass star formation. However, it is not possible to distinguish whether there are either high-mass protostars or ZAMS B0-5 stars present inside the clumps at this stage.

Item Type: Article
Subjects: Q Science > QB Astronomy
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: R.F. Xu
Date Deposited: 04 Jun 2009 16:13
Last Modified: 04 Jun 2009 16:13
Resource URI: http://kar.kent.ac.uk/id/eprint/19280 (The current URI for this page, for reference purposes)
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