On the alpha Orionis triple system

Details On the alpha Orionis triple system On the alpha Orionis triple system

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...308..260k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 308, Sept. 1, 1986, p. 260-269.

Astronomy and Astrophysics

Astrophysics

33

Companion Stars, Image Reconstruction, Red Giant Stars, Supergiant Stars, Interferometry, Periodic Variations, Polarization (Waves), Speckle Patterns, Stellar Envelopes, Stellar Magnitude, Stellar Orbits

Scientific paper

Detection of two close optical companions to the red supergiant α Ori was accomplished in 1983 November on the Steward Observatory 2.25 m telescope. A new two-dimensional photon counting camera was used for data recording, and speckle imaging was used for image reconstruction. The closer of the two sources is located at 0arcsec.06±0arcsec.01 from α Ori (P.A. = 273°), the more distant at 0arcsec.51±0arcsec.01 (P.A. = 278°). An analysis of these results and of earlier polarization data favors an interpretation in which the two optical sources are stellar companions to α Ori.

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