Two very similar late-type contact systems - BX and BB Pegasi

Abstract

view Abstract Citations (15) References (9) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Two very similar late-type contact systems : BX and BB Pegasi. Leung, K. -C. ; Zhai, D. ; Zhang, Y. Abstract V and B observations of BX and BB Pegasi secured at Beijing Observatory were analyzed with the Wilson and Devinney method. An extensive search for reliable photometric mass ratios was performed. Both systems were found to be in contact with small degrees of overcontact, 10 percent and 12 percent, for BX and BB Peg, respectively. Their mass ratios were, respectively, 2.80 and 2.81. The eclipse at primary minimum was found to be total for both systems. They have the characteristics of W-type W UMa systems. The computed light curves fit the observations very well for BX Peg. The light curves of BB Peg are very complex: there is large asymmetry in the maxima, and significant discrepancy in the differential eclipse depths (Min I and Min II) between the V and B curves. As a result of these complications, the computed light curves do not fit the observations well. Adopted photometric parameters for BX Peg are similar to those obtained by Kaluzny, who used the Rucinski method. It is believed that adopted photometric parameters for BB Peg are more reliable than those obtained by Cerruti-Sola et al. Publication: The Astronomical Journal Pub Date: March 1985 DOI: 10.1086/113759 Bibcode: 1985AJ.....90..515L Keywords: Astronomical Photometry; Eclipsing Binary Stars; Electrophotometry; Late Stars; Light Curve; Mass Ratios; Astrophysics full text sources ADS | data products SIMBAD (4)