Discovery of pulsations in the Am star HD 13079

Authors
Martinez, P Kurtz, DW Ashoka, BN Chaubey, US Gupta, SK Leone, F Catanzaro, G Sagar, R Raj, E Seetha, S Kasturirangan, K
Citation
P. Martinez et al., Discovery of pulsations in the Am star HD 13079, M NOT R AST, 309(4), 1999, pp. 871-874
Citations number
26
Categorie Soggetti
Space Sciences
Journal title
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN journal
00358711 → ACNP
Volume
309
Issue
4
Year of publication
1999
Pages
871 - 874
Database
ISI
SICI code
0035-8711(19991111)309:4<871:DOPITA>2.0.ZU;2-S
Abstract
Pulsation in cool main-sequence Am stars is a rare phenomenon observed in a few marginal Am stars and only one classical Am star. The chemically pecul iar star HD 13079 is shown to be pulsating with a 78-min period and a peak- to-peak B amplitude of 0.02 mag, The Hipparcos parallax, uvby beta photomet ry and pulsations together suggest that HD 13079 is an Am star near the zer o-age main sequence, and that it is a fundamental-mode pulsator on the red edge of the instability strip.