Evidence for line-profile variability in the spectrum of the O supergiant HD 152249: preliminary results

Details Evidence for line-profile variability in the spectrum of the O supergiant HD 152249: preliminary results Evidence for line-profile variability in the spectrum of the O supergiant HD 152249: preliminary results

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009coast.158..202g&link_type=abstract

"Communications in Asteroseismology, Vol.158, p. 202 Proceedings of "38th Liege International Astrophysical Colloquium: Evoluti

Astronomy and Astrophysics

Astrophysics

Scientific paper

Already suspected to be variable, the O9Ib((f)) supergiant HD 152249 has been the subject of a dedicated follow-up spectroscopic run. We report here on the preliminary results. This star is definitely exhibiting significant line-profile variations which are most probably a sign of the existence of non-radial pulsations. HD 152249 could thus belong to the newly identified group of pulsating OB supergiants.

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