Long term variability in dwarf M stars

Details Long term variability in dwarf M stars Long term variability in dwarf M stars

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....107.1135w&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 107, no. 3, p. 1135-1140

Astronomy and Astrophysics

Astronomy

17

Astronomical Photometry, Brightness, Broadband, Dwarf Stars, Long Term Effects, M Stars, Time Dependence, Variability, Astronomical Observatories, Gallium Arsenides, Photomultiplier Tubes, Telescopes

Scientific paper

Broadband VRI observations for 43 dwarf M stars have been made over the period 1980-1991, and 21 of them, including eight UBV standard stars, show long term variability at the 95% confidence level. While it undoubtedly exists, periodic behavior cannot be demonstrated from these data except perhaps in the cases of GL 213 and GL 876 which appear to show periods of 2.7 and 2.9 yr, respectively. Substantial short term variations in the light of GL 277A (= VV Lyn) are also noted.

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