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The Analysis of the Rotating Disk of some Southern Galactic B[e] Stars

Published online by Cambridge University Press:  26 May 2016

Marcelo Borges Fernandes ,
H.J.G.L.M. Lamers ,
Michaela Kraus  and
Francisco X. de Araújo
Marcelo Borges Fernandes
Affiliation:
Astronomical Institute, Utrecht University, P.O. Box 80000, NL-3508, TA, Utrecht, The Netherlands
H.J.G.L.M. Lamers
Affiliation:
Astronomical Institute, Utrecht University, P.O. Box 80000, NL-3508, TA, Utrecht, The Netherlands
Michaela Kraus
Affiliation:
Astronomical Institute, Utrecht University, P.O. Box 80000, NL-3508, TA, Utrecht, The Netherlands
Francisco X. de Araújo
Affiliation:
Observatório Nacional, Rua General José Cristino, 77, CEP: 20921-400, São Cristóvão, Rio de Janeiro, Brasil

Abstract

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The spectra of stars with the B[e] phenomenon are dominated by features that are related to physical conditions of circumstellar material around these objects and are not intrinsic to the stars. Previous studies have shown that emission lines present in the optical spectra of these objects are formed in an equatorial rotating disk. The analysis of high and low resolution spectra, obtained by us with 1.52 telescope in ESO for some Southern Galactic B[e] Stars, can give us information about the structure and velocity of the disk. We will describe the analysis of the unclassified B[e] star Hen 2-90.

Type
Session 1 Observations of Rotating Stars
Information
Symposium - International Astronomical Union , Volume 215: Stellar Rotation , 2004 , pp. 109 - 110
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

Borges Fernandes, M., Lamers, H.J.G.L.M., Kraus, M. & de Araújo, F.X. 2003, in preparation Google Scholar
Lamers, H.J.G.L.M., Zickgraf, F.-J., de Winter, D., Houziaux, L. & Zorec, J. 1998, A&A 340, 117 Google Scholar
Sahai, R., & Nyman, L.-A. 2000, ApJ 537, L145 Google Scholar