Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...189...81s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 189, no. 1-2, Jan. 1988, p. 81-88. FNRS-supported research.
Astronomy and Astrophysics
Astrophysics
7
Electrophotometry, Line Spectra, O Stars, Radial Velocity, Stellar Spectrophotometry, Ubv Spectra, B Stars, Hertzsprung-Russell Diagram, Stellar Color, Stellar Magnitude, Variable Stars
Scientific paper
Photoelectric photometry of the runaway star 53 Arietis collected during a timespan of seven years is presented. The photoelectric photometry does not reveal any variations over a short or a long time base. From a number of spectrographic plates taken during two nights, and from a reexamination of plates taken in 1956, it is concluded that 53 Ari does not show radial velocity variations, but that there are small differences between radial velocities obtained from different groups of lines. The possibility that 53 Ari is a β Cephei star is definitely ruled out, and the implications for the existence of a possible extension of the β Cephei instability strip is discussed.
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