HR 1328: A cool edge 'Slowly Pulsating B star'

DOI: 
Publication date: 
01/01/1996
Main author: 
Chapellier E.
IAA authors: 
Garrido R.
Authors: 
Chapellier E., Sadsaoud H., Valtier J.C., Mathias P., Garrido R., Alvarez M., Sareyan J.P., Chauville J., Le Contel J.M.
Journal: 
Astronomy and Astrophysics
Publication type: 
Article
Volume: 
307
Pages: 
91-94
Number: 
Abstract: 
We report on the discovery of a photometric variability (in Strömgren u and v filters) of HR 1328, a B8 main-sequence star. Two periods are easily derived, of the order of 0.61 d and 0.77 d. From the position of this star in the HR diagram together with other pulsational characteristics, HR 1328 can be classified as a Slowly Pulsating B star (SPB). Although these stars are found to oscillate in high-order g-modes the relatively short pulsation periods of HR 1328 point towards lower-order g-modes in this case. Together with HD 123515, HR 1328 extends and precises the observational cool edge of the SPB's instability strip.
Database: 
SCOPUS
Keywords: 
Stars: individual: HR 1328; Stars: oscillations; Stars: variables: other