Hostname: page-component-8448b6f56d-t5pn6 Total loading time: 0 Render date: 2024-04-24T19:53:42.847Z Has data issue: false hasContentIssue false
  • English
  • Français

Line Profile Variability in the Be Star α Eridani

Published online by Cambridge University Press:  12 April 2016

N. V. Leister ,
E. Janot-Pacheco ,
J. Leyton Z. ,
A. M. Hubert  and
M. Floquet
N. V. Leister
Affiliation:
Institute Astronômico e Geofísico, Universidade de São Paulo, Brazil, 04301-974
E. Janot-Pacheco
Affiliation:
Institute Astronômico e Geofísico, Universidade de São Paulo, Brazil, 04301-974
J. Leyton Z.
Affiliation:
Departamento de Física, Universid de la Serena, Chile
A. M. Hubert
Affiliation:
Observatoire de Paris, Section d’Astrophysique de Meudon, UMR 8633 CNRS/DASGAL, F-92195 Meudon Cedex, France
M. Floquet
Affiliation:
Observatoire de Paris, Section d’Astrophysique de Meudon, UMR 8633 CNRS/DASGAL, F-92195 Meudon Cedex, France

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present an analysis of line profile variability of the Be star α Eri (Achernar). Spectra of He I λ667.8nm were collected at Brazilian Laboratório Nacional de Astrofísica (LNA) during 10 observing runs covering 27 nights in 6 years. The presence of a 1.26 days period reported previously is confirmed and we report also the detection of other periods (0.73 and 0.53 days) and a possible 12.5 days modulation. A transient high-velocity absorption component with RV = −500 km/s, higher than −υsini (−220 km/s) has appeared at the end of 1993, near the presumed maximum of the Hα emission phase.

Type
3. Periodic Variations
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 272 - 275
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Balona, L.A., Engelbrecht, C.A., Marang, F. 1982, MNRAS 227, 123 Google Scholar
Foster, G. 1995, AJ 109, 1889 CrossRefGoogle Scholar
Hanuschik, R.W., Hummel, W., Sutorius, F., Dietle, O., Thimm, G. 1996, A&AS 116, 309 Google Scholar
Rivinius, Th., Baade, D., Stefl, S. Stahl, O., Wolf, B., Kaufer, A. 1998, A&A 333, 125 Google Scholar
Roberts, D.H., Lehár, J., Dreher, W. 1987, AJ 93, 968 Google Scholar