Hostname: page-component-cb9f654ff-65tv2 Total loading time: 0 Render date: 2025-08-29T01:52:55.448Z Has data issue: false hasContentIssue false
  • English
  • Français

Frequency Analysis of δ Scuti and RR Lyrae Stars in the OGLE-1 Database

Published online by Cambridge University Press:  12 April 2016

P. Moskalik  and
E. Poretti
P. Moskalik
Affiliation:
Copernicus Astronomical Centre, Warsaw, Poland
E. Poretti
Affiliation:
Copernicus Astronomical Centre, Warsaw, Poland

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We discuss the results of a systematic search for multi-periodic pulsations in Galactic Bulge δ Scuti and RR Lyrae stars. Six “normal” double-mode variables pulsating in two radial modes have been identified (5 δ Scuti-type and 1 RR Lyrae-type). In 37 RR Lyrae stars secondary periodicities very close to the primary pulsation frequency have been detected. These periodicities correspond to nonradial modes of oscillation. They are found in ∼ 23% of RRab and in ∼ 3% of RRc variables of our sample.

Information

Type
Part 3. Nonlinear Effects in Pulsating Stars
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 392 - 395
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Alcock, C., Allsman, R., Alves, D.R., et al. 2000, ApJ, 542, 257 Google Scholar
Poretti, E. 2001, A&A, 371, 986 Google Scholar
Udalski, A., Szymański, M., Kalużny, J. & Kubiak, M. 1993, Acta Astron., 42, 253 Google Scholar
Udalski, A., Kubiak, M., Szymański, M., et al. 1994, Acta Astron., 44, 317 Google Scholar
Udalski, A., Olech, A., Szymański, M., et al. 1995, Acta Astron., 45, 433 Google Scholar
Udalski, A., Olech, A., Szymański, M., et al. 1996, Acta Astron., 46, 51 Google Scholar
Udalski, A., Olech, A., Szymański, M., et al. 1997, Acta Astron., 47, 1 Google Scholar