Subarcsecond-resolution 86 ghz continuum maps of orion kl

R. L. Plambeck, M. C.H. Wright, L. G. Mundy, L. W. Looney

Research output: Contribution to journalArticlepeer-review

Abstract

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 yU1, 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.

Original languageEnglish (US)
Pages (from-to)L189-L192
JournalAstrophysical Journal
Volume455
Issue number2
DOIs
StatePublished - Dec 20 1995
Externally publishedYes

Keywords

  • Circumstellar matter
  • ISM: individual (Becklin-Neugebauer
  • Orion IRc2)
  • Radio continuum: stars
  • Stars: formation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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