Constraints on possible long-term variability of ZZ Ceti stars

Details Constraints on possible long-term variability of ZZ Ceti stars Constraints on possible long-term variability of ZZ Ceti stars

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..319l&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 92, June 1980, p. 319-322. Research supported by the Harvard College Obs

Astronomy and Astrophysics

Astronomy

Secular Variations, Stellar Luminosity, Variable Stars, White Dwarf Stars, Light Curve, Photographic Plates

Scientific paper

Magnitude estimates for 15 ZZ Ceti (white-dwarf) variable stars determined from plates in the Harvard collection reveal no evidence for variability in excess of measurement errors (about 0.15m) since the 1890s. This suggests that these DA variables are not distinguished from their nonvariable counterparts of any large-amplitude, low-frequency, or secular variations.

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