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- W2000821431 abstract "AO Cas, a short-period, double-lined spectroscopic binary, is studied as part of a search for spectroscopic evidence of colliding stellar winds in binary systems of O-type stars. High S/N ratio spectra of the H-alpha and He I 6678-A line profiles are presented, and their orbital-phase-related variations are examined in order to derive the location and motions of high-density circumstellar gas in the system. These profile variations are compared with those observed in the UV stellar wind lines in IUE archival spectra. IUE spectra are also used to derive a system mass ratio by constructing cross-correlation functions of a single-lined phase spectrum with each of the other spectra. The resulting mass ratio is consistent with the rotational line broadening of the primary star, if the primary is rotating synchronously with the binary system. The best-fit models were found to have an inclination of 61.1 deg + or - 3.0 deg and have a primary which is close to filling its critical Roche lobe." @default.
- W2000821431 created "2016-06-24" @default.
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- W2000821431 date "1991-07-01" @default.
- W2000821431 modified "2023-09-23" @default.
- W2000821431 title "A spectroscopic search for colliding stellar winds in O-type close binary systems. I - AO Cassiopeiae" @default.
- W2000821431 doi "https://doi.org/10.1086/170191" @default.
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