New multi-site observations of the δ Scuti stars BS and BT cancri results of the STEPHI VII campaign on the praesepe cluster

M. M. Hernández, E. Michel, J. A. Belmonte, S. Y. Jiang, M. Álvarez, M. Chevreton, M. Paparó, H. Kjeldsen, D. Bauduin, J. Fromage, M. J. Goupil, Z. P. Li, Y. Y. Liu, A. Mangeney, G. Massacrier, O. Ringot, T. Roca Cortés, B. Servan, I. Vidal

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

New observations of BS and BT Cnc were performed during the STEPHI VII campaign in 1996 February. An overall run of 115 hours of data was collected. Different methods have been used to analyse the time series, bringing the detection of 2 frequencies for BT Cnc and 3 frequencies for BS Cnc above the 99% confidence level. A comparison with the literature reveals that the dominant mode of BT Cnc (∼9.8 c/d) has kept excited over tens of years, while the secondary modes have not been the same all the time. However, during the very last years the two frequencies detected by us have been the only ones noticeably excited in the spectrum.

Original languageEnglish
Pages (from-to)198-206
Number of pages9
JournalAstronomy and Astrophysics
Volume337
Issue number1
Publication statusPublished - Sep 1 1998

    Fingerprint

Keywords

  • Open clusters and associations: individual : Praesepe
  • Stars: individual: BS Cnc; BT Cnc
  • Stars: oscillations
  • δ Scu

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Hernández, M. M., Michel, E., Belmonte, J. A., Jiang, S. Y., Álvarez, M., Chevreton, M., Paparó, M., Kjeldsen, H., Bauduin, D., Fromage, J., Goupil, M. J., Li, Z. P., Liu, Y. Y., Mangeney, A., Massacrier, G., Ringot, O., Roca Cortés, T., Servan, B., & Vidal, I. (1998). New multi-site observations of the δ Scuti stars BS and BT cancri results of the STEPHI VII campaign on the praesepe cluster. Astronomy and Astrophysics, 337(1), 198-206.