On the variability of the two brightest stars in the galactic cluster IC 2391

Details On the variability of the two brightest stars in the galactic cluster IC 2391 On the variability of the two brightest stars in the galactic cluster IC 2391

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26as...52...21w&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 52, April 1983, p. 21-25. Research supported by the Minister

Astronomy and Astrophysics

Astrophysics

6

Binary Stars, Early Stars, Galactic Clusters, Stellar Luminosity, Stellar Spectrophotometry, Variable Stars, Periodic Variations, Stellar Evolution

Scientific paper

Short-period pulsations have been suspected for the two brightest stars of the galactic cluster IC 2391. New photometric data show that both stars are indeed variable, but on a longer time scale. For ο Velorum, a period of 2.779 days is found, and it is shown that the existing data are consistent with this period. For HR 3467, a period of 1.553 days is derived. None of these stars varied on a shorter time scale. Possible explanations for the observed variations are discussed.

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