Subarcsecond-Resolution 86 GHz Continuum Maps of Orion KL

Details Subarcsecond-Resolution 86 GHz Continuum Maps of Orion KL Subarcsecond-Resolution 86 GHz Continuum Maps of Orion KL

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...455l.189p&link_type=abstract

Astrophysical Journal Letters v.455, p.L189

Astronomy and Astrophysics

Astronomy

59

Stars: Circumstellar Matter, Ism: Individual Name: Becklin-Neugebauer, Ism: Individual Name: Orion Irc2, Radio Continuum: Stars, Stars: Formation

Scientific paper

The BIMA array was used to map the 86 GHz continuum emission from Orion KL with 0."6 angular resolution. The Becklin-Neugebauer object (BN) and radio source I, coincident with the IRc2 SiO maser, were detected as unresolved sources with flux densities of 84 +/- 10 and 34 +/- 5 mJy, respectively. The radio spectra of both sources are well fit by models of free-free emission from ionized circumstellar envelopes. The offset of BN from the SiO maser is determined with +/-0."02 accuracy. Comparison with earlier data suggests that BN and source I are moving apart at ~0."02 yr-1, 50 km s-1 at the distance of Orion. We suggest that BN is a runaway B star that lies near the Kleinmann-Low Nebula purely by coincidence.

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