Achernar

Details Achernar Achernar

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.227..123b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 227, July 1, 1987, p. 123-133.

Astronomy and Astrophysics

Astronomy

17

B Stars, Stellar Spectrophotometry, Variable Stars, Binary Stars, Line Spectra, Periodic Variations, Stellar Luminosity, Stellar Oscillations, Stellar Rotation

Scientific paper

The authors present results of intensive photometry over two seasons for the bright Be star Achernar. Some medium-dispersion spectroscopy simultaneous with the photometry is also presented. The variability of the star in both radial velocity and light has a period of 1.26 day. The form of the light curve is complex and probably changes with time. There also seems to be a weak but significant variation of the strength of the Mg II λ4881 line with the same period. The authors discuss these observations in the light of the non-radial oscillation, rotational modulation and binary hypotheses.

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