Large-scale Wind Structures in OB Supergiants: a Search for Rotationally Modulated Hα variability

Morel, T; Marchenko, S. V; Pati, A. K; Kuppuswamy, K; Carini, M. T

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dc.contributor.author	Morel, T
dc.contributor.author	Marchenko, S. V
dc.contributor.author	Pati, A. K
dc.contributor.author	Kuppuswamy, K
dc.contributor.author	Carini, M. T
dc.date.accessioned	2008-06-05T12:11:59Z
dc.date.available	2008-06-05T12:11:59Z
dc.date.issued	2003
dc.identifier.citation	BASI, Vol. 31, No. 3&4, pp. 333 - 335	en
dc.identifier.uri	http://hdl.handle.net/2248/2409
dc.description.abstract	We present preliminary results of a long-term spectroscopic monitoring of a sample of bright OB-supergiants aimed at establishing the incidence of co-rotating, large-scale wind structures by detecting rotationally modulated variability in H. Dramatic line-profile variations operating on a daily (and in some cases on a hourly) timescale are observed. A detailed period analysis has been so far carried out for 2 stars, and revealed in both cases the existence of cyclical H variations consistent with rotational modulation. In the case of HD 14134, the same periodicity is found in the contemporaneous light curve	en
dc.format.extent	84940 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of India	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2003BASI...31..333M	en
dc.subject	Stars: early-type	en
dc.subject	Stars: supergiants	en
dc.subject	Stars: emmision-line	en
dc.subject	Stars: winds	en
dc.subject	Outflows	en
dc.subject	Stars: rotation	en
dc.subject	stars: individual	en
dc.subject	HD 14134	en
dc.subject	HD 24912	en
dc.title	Large-scale Wind Structures in OB Supergiants: a Search for Rotationally Modulated Hα variability	en
dc.type	Article	en