A photometric survey of suspected small-amplitude red variables

Details A photometric survey of suspected small-amplitude red variables A photometric survey of suspected small-amplitude red variables

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasp..104...96p&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 104, Feb. 1992, p. 96-100. Research supported by NSERC

Astronomy and Astrophysics

Astronomy

17

Red Giant Stars, Stellar Oscillations, Stellar Spectrophotometry, Variable Stars, Astronomical Photometry, Asymptotic Giant Branch Stars, M Stars, Sky Surveys (Astronomy), Variability

Scientific paper

For approximately 100 days in the summer of 1990, photometric observations were carried out of 21 red-giant stars whose variability was suspected or poorly documented. Two were constant, six were marginally variable, and 16 were definitely variable. For these, the amplitude and timescale were estimated, though the estimates were restricted by the limited run of data. There was a slight tendency for stars with longer timescales and/or later spectral types to have larger amplitudes.

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