Photometry of the extreme helium star HD 124448

Details Photometry of the extreme helium star HD 124448 Photometry of the extreme helium star HD 124448

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.242....6j&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 242, Jan. 1, 1990, p. 6-9.

Astronomy and Astrophysics

Astronomy

15

B Stars, Helium, Stellar Spectrophotometry, Emission Spectra, Standard Deviation, Stellar Luminosity, Variability

Scientific paper

The extreme helium star HD 124448 has been examined for photometric variability on time-scales ranging from hours to years. There is no evidence for light variations of more than 0.02 mag. Following a similar result for BD + 10 deg 2179, the criterion for pulsational instability in hot luminous hydrogen-deficient stars appears to be the L/M ratio of the star.

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