A Circumstellar Disk around the High-Mass Protostar L1206A

Details A Circumstellar Disk around the High-Mass Protostar L1206A A Circumstellar Disk around the High-Mass Protostar L1206A

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...193.7207g&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #72.07; Bulletin of the American Astronomical Society, Vol. 30, p.1360

Astronomy and Astrophysics

Astronomy

Scientific paper

We present aperture synthesis mapping of a circumstellar disk around the high-mass protostellar source, L1206A. A contour map at 110 GHz reveals dust emission with peak flux density 32.5 +/-3 mJy in a circular 2'' beam, and integrated intensity 62 +/-6 mJy. The emission is elongated perpendicular to a bipolar reflection nebula with a nominal FWHM diameter of 2.3+/-0.05'' (deconvolved), corresponding to 2300 AU at the 1 kpc distance estimated for the Lynds 1206 cloud. Visibility amplitudes are well-matched by those predicted from a model of dust radiation arising from a circumstellar disk. Preliminary model-fitting suggests the disk has outer radius 4000 AU and mass greater than 0.3M_sun.

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