The hot γ Doradus and Maia stars

L. A. Balona, C. A. Engelbrecht, Y. C. Joshi, S. Joshi, K. Sharma, E. Semenko, G. Pandey, N. K. Chakradhari, David Mkrtichian, B. P. Hema, J. M. Nemec

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

The hot γ Doradus stars have multiple low frequencies characteristicof γ Dor or SPB variables, but are located between the red edge of the SPB and the blue edge of the γ Dor instability strips where all low-frequency modes are stable in current models of these stars. Though δ Sct stars also have low frequencies, there is no sign of high frequencies in hot γ Dor stars. We obtained spectra to refine the locations of some of these stars in the H-R diagram and conclude that these are, indeed, anomalous pulsating stars. The Maia variables have multiple high frequencies characteristic of β Cep and δ Sct stars, but lie between the red edge of the β Cep and the blue edge of the δ Sct instability strips. We compile a list of all Maia candidates and obtain spectra of two of these stars. Again, it seems likely that these are anomalous pulsating stars which are currently not understood.

Original languageEnglish
Pages (from-to)1318-1327
Number of pages10
JournalMonthly Notices of the Royal Astronomical Society
Volume460
Issue number2
DOIs
Publication statusPublished - 1 Aug 2016

Keywords

  • Stars: oscillations
  • Stars: variables: general

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint

Dive into the research topics of 'The hot γ Doradus and Maia stars'. Together they form a unique fingerprint.

Cite this