Abstract
view Abstract Citations (16) References (53) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS OI Lambda7774 Absorption as a Tracer of Streams and Disks in Nondegenerate Binary Stars Etzel, Paul B. ; Olson, Edward C. ; Senay, Matthew C. Abstract We propose a new spectroscopic approach for observing circumstellar matter in binary stars, based on the neutral oxygen lambda 7774 absorption lines. We present oxygen equivalent widths and radial velocities in 20 nondegenerate eclipsing binaries. We note limitations and advantages of using this line to trace circumstellar matter in binary systems, and confirm the presence of streams and rotating accretion disks in a number of short- long-period Algol systems. We discuss evidence for geometrically thick disks, and describe a small radial infall superimposed on disk rotation in most long-period systems. We speculate that infall may be related to viscous dissipation in disks. We emphasize the great sensitivity of lambda 7774 in studying the kinematics of circumstellar matter in many nondegenerate binary stars. Publication: The Astronomical Journal Pub Date: March 1995 DOI: 10.1086/117359 Bibcode: 1995AJ....109.1269E Keywords: Absorption Spectra; Accretion Disks; Eclipsing Binary Stars; Oxygen; Radial Velocity; Stellar Envelopes; Stellar Winds; Extinction; Spectral Line Width; Spectrographs; Spectrum Analysis; Stellar Orbits; Astronomy; BINARIES: VISUAL; CIRCUMSTELLAR MATTER; ACCRETION DISKS full text sources ADS | data products SIMBAD (21) CDS (1)
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