A NEW CLASS OF RAPIDLY PULSATING STAR .2. PB-8783

Authors
KOEN C KILKENNY D ODONOGHUE D VANWYK F STOBIE RS
Citation
C. Koen et al., A NEW CLASS OF RAPIDLY PULSATING STAR .2. PB-8783, Monthly Notices of the Royal Astronomical Society, 285(3), 1997, pp. 645-650
Citations number
16
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Monthly Notices of the Royal Astronomical Society → ACNP
ISSN journal
00358711
Volume
285
Issue
3
Year of publication
1997
Pages
645 - 650
Database
ISI
SICI code
0035-8711(1997)285:3<645:ANCORP>2.0.ZU;2-M
Abstract
Some 27 h of high-speed photometric monitoring of the sdB + star PB 87 83 has revealed it to be a rapidly pulsating star of the EC 14026 clas s. Six periodicities in the range 120 to 135 s have been tentatively i dentified in the light curve. The pulsation amplitudes of all the mode s are small, mostly below 5 mmag. Spectrograms show the star to be com posite, and UBVRIJHK photometry indicates that the companion to the su bdwarf is of early-F spectral type.