Open AccessTwo large amplitude slowly pulsating hot subdwarf stars
Author(s) -
Koen C.
Publication year - 2011
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2011.18929.x
Subject(s) - subdwarf , physics , stars , astrophysics , spectral line , amplitude , k type main sequence star , astronomy , t tauri star , white dwarf , optics
The discovery observations of two new slowly pulsating subdwarf B stars (V1093 Her stars), BPS CS22890−74 and PB 7032, are presented. Both stars are highly multiperiodic, and have – for V1093 Her stars – large amplitudes. Published descriptions of the (wavelength) spectra of the stars conflict, but new spectra show that both are sdB stars with effective temperatures below 30 000 K. BPS CS22890−74 has a cool companion.