Abstract
view Abstract Citations (14) References (13) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS BL Eri: an Almost-Contact Binary System Yamasaki, Atsuma ; Jugaku, Jun ; Seki, Munezo Abstract BV photoelectric and spectroscopic observations of the 0.417 day period eclipsing binary BL Eri were made. Light curves show total eclipses and a considerable photometric disturbance. The light-curve analysis reveals that both components are noncontact but nearly fill their respective critical Roche lobes and the system is almost contact. The spectral type is determined to be around G0 V. The spectrum appears double lined, giving a spectroscopic mass ratio that is in accord with the photometric mass ratio (q = 0.54). The components are undermassive for their radii and luminosities, indicating a post-main-sequence evolutionary state of the system. Publication: The Astronomical Journal Pub Date: March 1988 DOI: 10.1086/114687 Bibcode: 1988AJ.....95..894Y Keywords: Early Stars; Eclipsing Binary Stars; Light Curve; Roche Limit; Stellar Evolution; Stellar Spectrophotometry; Cassegrain Optics; Gallium Arsenides; Radial Velocity; Telescopes; Astrophysics; STARS: BINARIES full text sources ADS | data products SIMBAD (2)
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