Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977pasp...89..374c&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 89, June-July 1977, p. 374-385. NSF-supported research.
Astronomy and Astrophysics
Astronomy
35
Astronomical Spectroscopy, Binary Stars, Radial Velocity, Variable Stars, X Ray Sources, Astronomical Photometry, Companion Stars, Emission Spectra, Light Curve, Polarimetry, Spectral Line Width, Stellar Mass, Ubv Spectra
Scientific paper
Radial velocities and line-intensity measurements of AM Her during its bright state are presented. An intercomparison of all the recent spectroscopic data yields an improved orbital period of 0.128926 plus or minus 0.000009 day, in excellent agreement with polarimetric and photometric values. It is found that at least two principal regions of line formation can be identified. One of these is occulted during the deep V-light minimum, lending further support to the suggestion that the cool companion is at inferior conjunction at that phase.
Cowley Anne Pyne
Crampton David
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