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J/MNRAS/414/108 Calibrator of exoplanet-host stars (Beust+, 2011)
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stars.dat table4.dat
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Beginning of ReadMe :J/MNRAS/414/108 Calibrator of exoplanet-host stars (Beust+, 2011)
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On the use of the Virtual Observatory to select calibrators for phase-referenced
astrometry of exoplanet-host stars.
Beust H., Bonneau D., Mourard D., Lafrasse S., Mella G., Duvert G.,
Chelli A.
<Mon. Not. R. Astron. Soc., 414, 108-115 (2011)>
=2011MNRAS.414..108B
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ADC_Keywords: Stars, double and multiple ; Planets ; Finding lists
Keywords: techniques: interferometric - astronomical data bases: miscellaneous -
astrometry - proper motions - planetary systems
Abstract:
Phase-referenced interferometric astrometry offers the possibility to
look for exoplanets around bright stars. Instruments like PRIMA
(Phase-Referenced Imaging and Micro-arcsecond Astrometry) will measure
the astrometric wobble of a candidate star due to an exoplanet
relative to a close-by 'calibrator' star, located within the
instrument's observing field (1-arcmin in the PRIMA case). Stars with
already known exoplanets will constitute the first targets for this
technique, as it will provide a way to further specify the
characteristics of the known exoplanets, such as the inclinations. The
main requirement is to have a calibrator in the vicinity of the star.
We provide here a list of calibrators for all stars with known
exoplanets obtained using data mining and Virtual Observatory
techniques. This list is available online and revised regularly. The
calibrators are found from catalogues available at Centre de Donnees
astronomiques de Strasbourg (CDS) using the SearchCal software
developed at Jean-Marie Mariotti Center (JMMC). In our test case, the
calibrators are found within 1 arcmin angular distance for
approximately 50 per cent of the stars tested, and often closer. They
are all faint objects from the Two Micron All Sky Survey (2MASS) with
K magnitudes between 13 and 15. A list of the most promising targets
is also given.