Analysis of AAVSO visual observations of ten small-amplitude red variables

Details Analysis of AAVSO visual observations of ten small-amplitude red variables Analysis of AAVSO visual observations of ten small-amplitude red variables

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasp..105..287p&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 105, no. 685, p. 287-292.

Astronomy and Astrophysics

Astronomy

34

M Stars, Red Giant Stars, Variable Stars, Visual Observation, Autocorrelation, Electrophotometers, Power Spectra, Stellar Magnitude

Scientific paper

We have studied the periodicity of the following ten small-amplitude red variables, using Fourier analysis and autocorrelation analysis of AAVSO visual observations: RZ Arietis, Rho Persei, IN Hydrae, FS Comae Berenices, W Bootis, EU Delphini, R Lyrae, U Delphini, W Cygni, and Chi Aquarii. All of the M giants show variability on time scales of several tens of days; the degree of regularity varies from star to star. In addition, most of the stars show variability on time scales of several hundreds of days. The cause of the latter variability is not known.

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