HD 114839 - An Am star showing both ? Scuti and ? Dor pulsations discovered through MOST photometry

Autor(en)

H King, Jaymie M. Matthews, Jason F. Rowe, Chris Cameron, Rainer Kuschnig, David B. Guenther, Anthony F J Moffat, Slavek M. Rucinski, Dimitar Sasselov, Gordon A. H. Walker, Werner Wolfgang Weiss

Abstrakt

Using MOST1 (Microvariability and Oscillations of STars) satellite guide star photometry, we have discovered a metallic A star showing hybrid p- and gmode pulsations. HD 114839 was observed nearly continuously for 10 days in March, 2005. We identify frequencies in three groups: the first centered near 2 cycles/day, in the ? Dor pulsation range, and two others near 8 and 20, both in the ? Scuti range. This is only the fourth known such hybrid pulsator, including another MOST discovery (Rowe et al. 2006).

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

University of British Columbia (UBC), Saint Mary's University, Université de Montréal, University of Toronto, Harvard-Smithsonian Center for Astrophysics

Journal

Communications in Asteroseismology

Band

148

Seiten

28-33

Anzahl der Seiten

6

ISSN

1021-2043

DOI

https://doi.org/10.1553/cia148s28

Publikationsdatum

2006

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/8a65e04e-7351-43bd-a251-a372cb24846f