Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...257l..93m&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 257, June 15, 1982, p. L93-L97.
Astronomy and Astrophysics
Astrophysics
16
B Stars, Early Stars, Infrared Stars, Molecular Clouds, Stellar Evolution, Astrometry, Infrared Interferometers, Radiant Flux Density, Speckle Patterns, Stellar Envelopes, Stellar Spectrophotometry
Scientific paper
In order to study the structure of the infrared object Mon R2 IRS 3, speckle interferometric observations were obtained over the wavelength range from 2.2 to 12.5 microns. A triple structure was discerned containing two sources, approximately 0.10 arcsec in diameter, centered on a fainter source approximately 2 arcsec in diameter. The separation, position angle, and brightness ratio of the double components are 0.87 arcsec, 13.5 deg, and 0.41, respectively; these parameters are wavelength independent from 2.2 to 12.5 microns. The double source is interpreted as two early B-type stars, while the larger source is tentatively identified as an envelope of scattered light. Over a seven-month period, photometric variations were detected in the primary component of the double and in the large envelope.
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