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Current studies and future prospects in stellar-structure imaging with the GI2T

Published online by Cambridge University Press:  25 May 2016

Ph. Stee ,
D. Bonneau ,
F. Morand ,
D. Mourard  and
F. Vakili
Ph. Stee
Affiliation:
Equipe GI2T Observatoire de la Côte d'Azur 2130 route de l'Observatoire, Caussols, 06460 St Vallier de Thiey, France. email: [email protected]
D. Bonneau
Affiliation:
Equipe GI2T Observatoire de la Côte d'Azur 2130 route de l'Observatoire, Caussols, 06460 St Vallier de Thiey, France. email: [email protected]
F. Morand
Affiliation:
Equipe GI2T Observatoire de la Côte d'Azur 2130 route de l'Observatoire, Caussols, 06460 St Vallier de Thiey, France. email: [email protected]
D. Mourard
Affiliation:
Equipe GI2T Observatoire de la Côte d'Azur 2130 route de l'Observatoire, Caussols, 06460 St Vallier de Thiey, France. email: [email protected]
F. Vakili
Affiliation:
Equipe GI2T Observatoire de la Côte d'Azur 2130 route de l'Observatoire, Caussols, 06460 St Vallier de Thiey, France. email: [email protected]

Abstract

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The capability of optical long baseline interferometry for measuring the angular diameter of stars or binary separation is now well established. However, for the imaging of photospheric disk structures one needs very long baseline interferometers operated in the multi-telescope phase-closure technique. In this paper we will stress the capability of spectro-interferometric measurements to constrain the physics of hot stars. We will report our study of the interacting binary, β Lyrae, and the mass-losing Be star γ Cassiopeiae. We will look at the interpretation of both the modulus and phase data recorded by the long baseline interferometer GI2T in the southern France. The performances and limitations of spectro-interferometric techniques will also be discussed through some of the most exciting prospects within the reach of current interferometers.

Type
Session II: “Direct Mapping: The Last Frontier”
Information
Symposium - International Astronomical Union , Volume 176: Stellar Surface Structure , 1996 , pp. 191 - 198
Copyright
Copyright © Kluwer 1996 

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