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Interferometric Observations of η Carinae - the VLTI Takes Its First Glimpse at the Central Source

Published online by Cambridge University Press:  12 April 2016

P. Kervella ,
M. Schöller ,
R. van Boekel ,
E. di Folco ,
S. Correia ,
A. Glindemann ,
F. Paresce ,
A. Richichi ,
M. Tarenghi  and
M. Wittkowski
P. Kervella
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile
M. Schöller
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile
R. van Boekel
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
E. di Folco
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
S. Correia
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
A. Glindemann
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
F. Paresce
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
A. Richichi
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
M. Tarenghi
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
M. Wittkowski
Affiliation:
European Southern Observatory, Casilla 19001, Santiago 19, Chile

Abstract

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We describe the first long-baseline interferometric measurement ever made of the luminous blue variable η Carinae. η Car was observed with the Very Large Telescope Interferometer (VLTI) with the 8.2 m Unit Telescopes as well as with the 40 cm test siderostats on three different baselines. We will detail the measurements and data analysis and discuss briefly the implications of the derived visibility on the morphology of the central source. Furthermore we will discuss the future possibilities of interferometric observations and will show that η Car is one of the prime candidates for imaging with the VLTI.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 187: Exotic Stars as Challenges to Evolution , 2002 , pp. 99 - 105
Copyright
Copyright © Astronomical Society of the Pacific 2002

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