The Bipolar Outflow of AFGL 5142

Details The Bipolar Outflow of AFGL 5142 The Bipolar Outflow of AFGL 5142

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.5802h&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #58.02; Bulletin of the American Astronomical Society, Vol. 25, p.1385

Astronomy and Astrophysics

Astronomy

Scientific paper

We present new molecular line maps of the bipolar outflow in the AFGL 5142 star-forming region along with high-resolution 3.6 cm radio continuum and H_2O maser maps. A 4' square map of the CO J=2->1 transition taken with the Caltech Submillimeter Observatory reveals a well-collimated ~ 10 km s(-1) outflow nearly 2 pc in length with a distinct 18 degree bend between the opposing red and blueshifted lobes. Preliminary calculations yield a mass loss rate of 1.5×10(-4) Msun yr(-1) and a timescale of 8*E(4) yr. Located at the outflow origin are five H_2O maser spots resolved with the VLA in the A-configuration. The spots are spread over ~ 3'' and lie roughly along an axis normal to the outflow directions. The two innermost masers are nearly aligned with a 0.5 mJy radio continuum source (projected separation ~ 200 A.U.) whose flux is consistent with the ionizing radation of a B3 ZAMS star. We note the close similarity of AFGL 5142 to the more massive W75N region (Hunter et al. 1993) and consider these observations as support for the model of H_2O maser formation in disks around young massive stars.

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