Infrared Interferometric Gravity Darkening Observations of Vega with CHARA/FLUOR

Aufdenberg, J.; Mérand, A.; Coudé Du Foresto, V.; Absil, Olivier; di Folco, E.; Kervella, P.; Ridgway, S.; Berger, D.; Ten Brummelaar, T.; McAlister, H.; Sturmann, J.; Turner, N.

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Infrared Interferometric Gravity Darkening Observations of Vega with CHARA/FLUOR

Aufdenberg, J.; Mérand, A.; Coudé Du Foresto, V. et al.

2006 • In Coudé du Foresto, Vincent; Rouan, Daniel; Rousset, Gérard (Eds.) Visions for Infrared Astronomy

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Keywords :

Vega; interferometry; stellar atmospheres; stellar rotation; fundamental stellar parameters.

Abstract :

[en] We have obtained high-precision measurements of Vega at projected baselines between 103 m and 273 m with the CHARA Array using the (FLUOR) beam combiner in the K' band. A strongly gravity-darkened model atmosphere is in general agreement with both our interferometric data and archival spectrophotometry. This model indicates that Vega is rotating at 91%ofitsangular break-uprateandthatthepole-to-equator effectivetemperaturedifference is 2250 K.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Aufdenberg, J.

Mérand, A.

Coudé Du Foresto, V.

Absil, Olivier ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)

di Folco, E.

Kervella, P.

Ridgway, S.

Berger, D.

Ten Brummelaar, T.

McAlister, H.

Sturmann, J.

Turner, N.

Language :

English

Title :

Infrared Interferometric Gravity Darkening Observations of Vega with CHARA/FLUOR

Publication date :

March 2006

Event name :

Visions for Infrared Astronomy

Event organizer :

Rouan D. & Ridgway S.

Event place :

Paris, France

Event date :

du 20 au 22 mars 2006

Audience :

International

Main work title :

Visions for Infrared Astronomy

Editor :

Coudé du Foresto, Vincent

Rouan, Daniel

Rousset, Gérard

Publisher :

Lavoisier, Paris, France

Collection name :

Instrumentation, Mesure, Métrologie vol 6/1-4

Pages :

305-308

Additional URL :

http://adsabs.harvard.edu/abs/2006via..conf..305A

Available on ORBi :

since 25 January 2012

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