New photoelectric observations of the shell star O And

Details New photoelectric observations of the shell star O And New photoelectric observations of the shell star O And

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26as...36..471g&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 36, June 1979, p. 471-475. Research supported by the Consiglio Nazionale del

Astronomy and Astrophysics

Astrophysics

5

Electrophotometry, Light Curve, Main Sequence Stars, Shell Stars, Power Spectra, Spectrum Analysis, Stellar Luminosity, Stellar Spectrophotometry, Tables (Data), Ubv Spectra, Variability

Scientific paper

New photoelectric observations of the shell star o And for the years 1976-77 are reported. The light curves show a reduction in the range of luminous variations, a progressively bluer color of the star and a return of its brightness at the values which preceded the reduction which took place between JD 42714-27. These findings, related to a spectral analysis of the light curve of the 1976 data, seem to suggest a relation between photometric variability and shell activity, although no direct correlations were found with the spectrographic data published so far.

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