LINE SHAPE; LINE SPECTRA; STELLAR SPECTRA; WOLF-RAYET STARS; RADIAL VELOCITY; SPECTRAL SIGNATURES; VARIABILITY
Abstract :
[en] Line profile variations of WR 134 are analyzed on more than 200 spectra collected at Haute Provence Observatory and at Kitt Peak National Observatory. No conclusive evidence is found for a periodic behavior. However, for some frequencies, for example, the ones close to nu = (n x 0.5)/d, the data are ill-distributed, and the existence of a related periodic phenomenon cannot be completely ruled out. This does not mean that the variability presents a purely random behavior. Several new characteristics of the observed deformations are extracted from the analysis of the spectra and it is tentatively suggested that these could be the signature of a bipolar flow.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Vreux, Jean-Marie ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO)
Gosset, Eric ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Bohannan, B.; Kitt Peak National Observatory, Tucson, AZ
Conti, P.; Joint Inst. for Lab. Astrophysics, Boulder, CO
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