Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91..590k&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 91, March 1986, p. 590-597. Research supported by Trenton State College.
Astronomy and Astrophysics
Astronomy
5
Eclipsing Binary Stars, Spaceborne Astronomy, Stellar Spectra, Ultraviolet Astronomy, Iue, Line Spectra, Polarization Characteristics, Spectral Line Width, Stellar Winds, Ubv Spectra
Scientific paper
The IUE spectra of the close binary star HD 47755 have been examined in order to determine its geometry, chemical composition, and light curve. UBV fluxes in the spectra, when dereddened for E(B-V) = 0.09 yield an effective temperature of 16,500 K. The ratio of the mean radii of the stars is found to agree well with an old blueband spectrophotometric value. Eclipses in the binary have been observed and a complex green light curve is derived. It is suggested that the wind from at least one of the components of HD 47755 is the source of the complexity in the light curve. The geometry of the HD 47755 is compared to that of V 641 Mon, A definite cluster member of NGC 2264. The interstellar line spectrum is found to be similar to that of V 641 Mon and the column densities for a few interstellar ions are given in a table. Evaluation of the nonastrometric evidence indicates that HD 47755 is also a member of NGC 2264.
Bradstreet David H.
Hrivnak Bruce J.
Koch Robert H.
Perry P. M.
Pfeiffer Raymond J.
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