Main sequence stars as calibrators for interferometry

Pierre Kervella; Frederic Thevenin; Damien Segransan; Emmanuel Di Folco

doi:10.1117/12.550793

20 October 2004 Main sequence stars as calibrators for interferometry

Pierre Kervella, Frederic Thevenin, Damien Segransan, Emmanuel Di Folco

Proceedings Volume 5491, New Frontiers in Stellar Interferometry; (2004) https://doi.org/10.1117/12.550793
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

We present in this paper new and accurate calibrations of the surface brightness-color relations that can be used to predict accurately the angular diameter of dwarf stars and subgiants. These stars present significant advantages as calibrators for interferometric observations. In many cases, they are more stable than giants and supergiants, as they are steadily burning their hydrogen. They are present in large numbers in the solar neighborhood, and offer a broad variety of colors. Their proximity allows to minimize the problems related to interstellar extinction in estimating their true magnitudes and colors. Excluding multiple stars, fast rotators and highly variable stars, it is possible to select reliable calibrators from spectro-photometric observations. Moreover, as opposed to the giant and supergiant stars, the photospheric diameter of dwarf stars is well defined and less sensitive to the assumed atmosphere models. In particular, the limb darkening related problems are alleviated at infrared wavelengths.

Citation Download Citation

Pierre Kervella, Frederic Thevenin, Damien Segransan, and Emmanuel Di Folco "Main sequence stars as calibrators for interferometry", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); https://doi.org/10.1117/12.550793

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available