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J/MNRAS/414/108     Calibrator of exoplanet-host stars       (Beust+, 2011)

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
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. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file stars.dat 81 203 List of all exoplanet-host stars table4.dat 121 582 List of accepted calibrators found by SearchCal for all exoplanet-host stars on 2010 December 6
Byte-by-byte Description of file: stars.dat
Bytes Format Units Label Explanations
1- 15 A15 --- Star Exoplanet-host star name 17- 18 I2 h RAh Star right ascension (J2000) 20- 21 I2 min RAm Star right ascension (J2000) 23- 29 F7.4 s RAs Star right ascension (J2000) 31 A1 --- DE- Star declination sign (J2000) 32- 33 I2 deg DEd Star declination (J2000) 35- 36 I2 arcmin DEm Star declination (J2000) 38- 43 F6.3 arcsec DEs Star declination (J2000) 45- 52 F8.2 mas/yr pmRA ?=- Star proper motion along RA 54- 60 F7.2 mas/yr pmDE ?=- Star proper motion along DE 62- 67 F6.2 mas plx ? Star parallax 69- 74 E6.3 mas Size ? Size of astrometric orbit 76- 81 F6.3 mag Kmag ? Star K magnitude
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 15 A15 --- Star Exoplanet-host star name 17- 34 A18 --- Calib Calibrator name 36- 37 I2 h RAh Calibrator right ascension (J2000) 39- 40 I2 min RAm Calibrator right ascension (J2000) 42- 47 F6.3 s RAs Calibrator right ascension (J2000) 49 A1 --- DE- Calibrator declination sign (J2000) 50- 51 I2 deg DEd Calibrator declination (J2000) 53- 54 I2 arcmin DEm Calibrator declination (J2000) 56- 60 F5.2 arcsec DEs Calibrator declination (J2000) 62- 69 F8.3 mas/yr pmRA ?=- Calibrator proper motion along RA 70- 76 F7.2 mas/yr pmDE ?=- Calibrator proper motion along DE 78- 83 F6.3 mag Kmag Calibrator K magnitude 85- 91 F7.5 arcmin Dist0 Calibrator distance in 2000.0 93- 99 F7.5 arcmin Dist2 Calibrator distance in 2020.0 101-107 F7.5 arcmin Distm [0/1]? Minimum distance (in Datem) 109-110 A2 --- --- [in] 112-121 F10.4 yr Datem [-8450/22666]? Date for Distm
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Jan-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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