The BM Ori System. III. The Depth of the Minimum in the Infrared

Details The BM Ori System. III. The Depth of the Minimum in the Infrared The BM Ori System. III. The Depth of the Minimum in the Infrared

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap.....48..475v&link_type=abstract

Astrophysics, Volume 48, Issue 4, pp.475-482

Astronomy and Astrophysics

Astrophysics

Stars: Eclipsing Binary, Individual: Bm Ori, Stars: Eclipsing Binary - Individual: Bm Ori

Scientific paper

The depth of the minimum of the BM Ori eclipsing system is studied in the infrared. For this purpose, observations have been made in the JHKLM bands outside the eclipse and in the JHKL bands near the central phase of the eclipse. The depth of the minimum is found to have a complicated wavelength dependence. In the short wavelength region of the spectrum this depth decreases from the U band to the R band (λ=0.36 0.71 mm), which is explained in terms of eclipsing of the principal star by a dust cloud surrounding the companion and by the disk of the companion. In the IR the depth of the minimum increases sharply from the I to the L band (λ=0.97 3.5 mm). This effect can be explained by partial obscuring of the hot region of the dust cloud by the disk of the companion.

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