The photometric variability of the extremely hydrogen-deficient stars KS Persei and LSII + 33.5 deg

Details The photometric variability of the extremely hydrogen-deficient stars KS Persei and LSII + 33.5 deg The photometric variability of the extremely hydrogen-deficient stars KS Persei and LSII + 33.5 deg

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.228..819m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 228, Oct. 1, 1987, p. 819-825.

Astronomy and Astrophysics

Astronomy

8

Astronomical Photometry, Binary Stars, Stellar Composition, Helium, Hydrogen, Stellar Color, Stellar Magnitude, Stellar Temperature, Variable Stars

Scientific paper

Strömgren photometry of the extremely hydrogen-deficient binary KS Persei and the extremely hydrogen-deficient star (extreme helium star) LS II +33°5 is presented. The observations of KS Persei suggest light and colour variations on a time-scale of ˜5 day in addition to the longer ˜30 day light variation previously reported. The suspected variability in LS II +33°5 is confirmed with maximum changes in brightness over 3 - 4 day.

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