Transition to a Be phase in HD 17520

Details Transition to a Be phase in HD 17520 Transition to a Be phase in HD 17520

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasp..104..508w&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 104, no. 677, July 1992, p. 508-510. Research supported

Astronomy and Astrophysics

Astronomy

6

B Stars, O Stars, Stellar Evolution, Emission Spectra, H Alpha Line, Spectral Line Width, Stellar Spectrophotometry

Scientific paper

HD 17520, an O9 V star, has undergone a transition to a Be-type star over the past decade. Observations taken between 1985 October and 1991 December which show the strengthening of the H-alpha emission are reported. The line-profile variations are discussed and no new insights into the Be phenomenon are offered. For spectroscopic observers, this is a warning, since HD 17520 has been used as a spectrophotometric standard star.

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