OSCILLATIONS OF BT-CANCRI IN THE PRAESEPE CLUSTER

Authors
FREYHAMMER LM LARSEN SS PETERSEN JO
Citation
Lm. Freyhammer et al., OSCILLATIONS OF BT-CANCRI IN THE PRAESEPE CLUSTER, Astronomy and astrophysics, 325(2), 1997, pp. 559-562
Citations number
10
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
325
Issue
2
Year of publication
1997
Pages
559 - 562
Database
ISI
SICI code
0004-6361(1997)325:2<559:OOBITP>2.0.ZU;2-G
Abstract
CCD observations in Johnson B of BT Cancri = HD 73575, the brightest d elta Scuti variable in the Praesepe cluster, obtained on three nights in February 1994 are described. Using least squares Fourier decomposit ion, two modes of oscillation frequencies 9.783 and 7.005 c/d and ampl itudes of 18.0 and 9.9 mmag, respectively, are determined. Comparison with data from the literature indicate that BT Cnc may show secular va riations in the oscillation spectrum.