Journal ArticleDOI
Detection of high-order nonradial oscillations on the rapid rotator Zeta Ophiuchi and their link with Be type outbursts
S. S. Vogt,G. D. Penrod +1 more
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This article is published in The Astrophysical Journal.The article was published on 1983-12-01. It has received 113 citations till now.read more
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Journal ArticleDOI
A New Look at the Binary Characteristics of Massive Stars
TL;DR: In this paper, the authors constrain the properties of massive binaries by comparing radial velocity data on early-type stars in Cygnus OB2 with the expectations of Monte Carlo models.
Journal ArticleDOI
Toward complete statistics of massive binary stars: penultimate results from the cygnus ob2 radial velocity survey
Henry A. Kobulnicky,Daniel C. Kiminki,Michael J. Lundquist,Jamison Burke,Jamison Burke,James Chapman,James Chapman,E. Keller,E. Keller,Kathryn Lester,Kathryn Lester,E. Rolen,E. Rolen,E. Topel,Anirban Bhattacharjee,Rachel A. Smullen,Carlos A. Vargas Álvarez,Jessie C. Runnoe,Jessie C. Runnoe,Daniel A. Dale,M. Brotherton +20 more
TL;DR: In this article, the observed distribution of orbital periods is approximately uniform in log P for P 45 days, even after correction for completeness, indicating either a lower binary fraction or a shift toward low-mass companions.
Posted Content
A New Look at the Binary Characteristics of Massive Stars
TL;DR: In this paper, the authors compare the properties of massive binaries by comparing radial velocity data of Cygnus OB2 with Monte Carlo models and show that the true binary fraction is high.
Journal ArticleDOI
STELLAR PULSATIONS ACROSS THE HR DIAGRAM: Part 1
TL;DR: In this paper, the authors describe variable stars over essentially the whole mass domain can become pulsationally unstable during various stages of their evolution, and they will appear as variable stars with characteristics that are...
Journal ArticleDOI
The mass of the neutron star in Vela X-1
TL;DR: In this paper, the radial velocities of HD 77581, the B-supergiant companion of the X-ray pulsar Vela X-1, were measured using high-resolution optical spectra obtained in a nine-month campaign.
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