Spectroscopic monitoring of 10 new northern slowly pulsating B star candidates discovered from the HIPPARCOS mission

Citation
P. Mathias et al., Spectroscopic monitoring of 10 new northern slowly pulsating B star candidates discovered from the HIPPARCOS mission, ASTRON ASTR, 379(3), 2001, pp. 905-916
Citations number
23
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS
ISSN journal
14320746 → ACNP
Volume
379
Issue
3
Year of publication
2001
Pages
905 - 916
Database
ISI
SICI code
1432-0746(200112)379:3<905:SMO1NN>2.0.ZU;2-R
Abstract
A one-year follow-up campaign of high-resolution, high-signal-to-noise spec troscopy for 10 candidate slowly pulsating B stars, which were discovered f rom the HIPPARCOS astrometric mission, shows that all stars exhibit line-pr ofile variability. From our data, and from the HIPPARCOS photometry, we con clude that all but one of the targets provide evidence of multiperiodicity, with periods of the order of days, confirming their pulsational nature. Th us they are confirmed slowly pulsating B stars. We summarize the pulsation periods and Q-values and select the most interesting targets for very-long- term follow-up observations with the goal of performing asteroseismology.