Long-term radial velocity variations in some Be stars

Details Long-term radial velocity variations in some Be stars Long-term radial velocity variations in some Be stars

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ap%26ss..83..381a&link_type=abstract

Astrophysics and Space Science, vol. 83, no. 1-2, Apr. 1982, p. 381-390.

Astronomy and Astrophysics

Astrophysics

5

B Stars, Radial Velocity, Variable Stars, Binary Stars, Tables (Data)

Scientific paper

The radial velocities of EW Lac, 28 Tau, zeta Tau, KX And, KY And, CX Dra, and 88 Her are presented on long time-scales to study long-term variations and their eventual correlation with spectroscopic behavior, and to further predictions of shell phases. EW Lac shows long-term variations with a period of 40.3 yr, which may be of dynamical nature. The curve of RV for 28 Tau shows long-period variations that may be periodical, and in zeta Tau, the occurrence of another activity phase from 1908-1920 is suggested, in which the RV, V/R and the appearance of the spectra seem similar to those following the year 1958. Useful indications for KX and KY And are given.

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