The 580-day and other periodicities in X Persei

Details The 580-day and other periodicities in X Persei The 580-day and other periodicities in X Persei

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977mnras.181..619h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 181, Dec. 1977, p. 619-624.

Astronomy and Astrophysics

Astronomy

35

Binary Stars, Periodic Variations, Stellar Spectrophotometry, Variable Stars, X Ray Sources, Astronomical Catalogs, Balmer Series, Error Analysis, Orbital Elements, Radial Velocity, Stellar Models, Stellar Motions, Tables (Data)

Scientific paper

Spectroscopic observations for 1975-76 are presented, together with some photometric measurements. The 580-day periodic variation in velocity is much less marked, but still significant in the 1920-76 data sample. Searches were made for 22.4-hr periodicity, and upper limits for velocity variations are derived. Proposed binary models for the star are discussed.

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