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Emission-line Stars and Early-type Stars with Gaia

Published online by Cambridge University Press:  15 February 2011

C. Turon ,
F. Meynadier ,
F. Arenou ,
R. Blomme ,
Y. Frémat ,
A. Lobel  and
C. Martayan
R. Blomme
Affiliation:
Royal Observatory of Belgium, Ringlaan 3, 1180 Brussel, Belgium. e-mail: Ronny.Blomme@oma.be
Y. Frémat
Affiliation:
Royal Observatory of Belgium, Ringlaan 3, 1180 Brussel, Belgium. e-mail: Ronny.Blomme@oma.be
A. Lobel
Affiliation:
Royal Observatory of Belgium, Ringlaan 3, 1180 Brussel, Belgium. e-mail: Ronny.Blomme@oma.be
C. Martayan
Affiliation:
ESO, Alonso de Cordova 3107, Vitacura, Santiago de Chile, Chile
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Abstract

Gaia will provide accurate parallaxes, spectrophotometry and spectroscopy for hundreds of thousands of emission-line stars across the whole HR diagram. In preparation for the Gaia mission, we are developing algorithms to recognize and classify emission-line stars. A large collection of ground-based spectroscopic observations has been collected and will be used for testing and training the algorithms.

Gaia will also provide information on several millions of early-type stars. Determining accurate parameters for these stars from Gaia data only will be difficult due to the AV – Teff degeneracy.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 45: GAIA: At the Frontiers of Astrometry , 2010 , pp. 373 - 376
Copyright
© EAS, EDP Sciences 2011

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References

Références

Bailer-Jones, C.A.L., 2010, MNRAS, 403, 96 CrossRef
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Isasi, Y., Zaldua, I., Sartoretti, P., et al., 2010, Gaia report GAIA-C2-UG-UB-YI-003-7, Gaia Livelink
Jordi, C., & Carrasco, J.M., 2007, ASPCS, 364, 215
Lobel, A., Frémat, Y., Blomme, R., 2010, Gaia report GAIA-C8-TN-ROB-AL-001-1, Gaia Livelink