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Proceedings Paper

Building the 'JMMC Stellar Diameters Catalog' using SearchCal
Author(s): Sylvain Lafrasse; Guillaume Mella; Daniel Bonneau; Gilles Duvert; Xavier Delfosse; Olivier Chesneau; Alain Chelli
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Paper Abstract

The JMMC1 Calibrator Workgroup has long developed methods to ascertain the angular diameter of stars, and provides this expertise in the SearchCal2 software. SearchCal dynamically finds calibrators near science objects by querying CDS3 hosted catalogs according to observational parameters. Initially limited to bright objects (K magnitude ≤ 5.5), it has been upgraded with a new method providing calibrators without any magnitude limit but those of queried catalogs. We introduce here a new static catalog of stellar diameters, containing more than 38000 entries, obtained from SearchCal results aggregation on the whole celestial sphere, complete for all stars with HIPPARCOS4 parallaxes. We detail the methods and tools used to produce and study this catalog, and compare the static catalog approach with the dynamical querying provided by SearchCal engine. We also introduce a new Virtual Observatory service, enabling the reporting of, and querying about, stars flagged as "bad calibrators" by astronomers, adding this ever-growing database to our SearchCal service.

Paper Details

Date Published: 2 August 2010
PDF: 11 pages
Proc. SPIE 7734, Optical and Infrared Interferometry II, 77344E (2 August 2010); doi: 10.1117/12.857024
Show Author Affiliations
Sylvain Lafrasse, Univ. Joseph Fourier, CNRS, Lab. d'Astrophysique de Grenoble (France)
Guillaume Mella, Univ. Joseph Fourier, CNRS, Lab. d'Astrophysique de Grenoble (France)
Daniel Bonneau, Univ. Nice Sophia Antipolis, CNRS, Observatoire de la Côte d'Azur (France)
Gilles Duvert, Univ. Joseph Fourier, CNRS, Lab. d'Astrophysique de Grenoble (France)
Xavier Delfosse, Univ. Joseph Fourier, CNRS, Lab. d'Astrophysique de Grenoble (France)
Olivier Chesneau, Univ. Nice Sophia Antipolis, CNRS, Observatoire de la Côte d'Azur (France)
Alain Chelli, Univ. Joseph Fourier, CNRS, Lab. d'Astrophysique de Grenoble (France)


Published in SPIE Proceedings Vol. 7734:
Optical and Infrared Interferometry II
William C. Danchi; Françoise Delplancke; Jayadev K. Rajagopal, Editor(s)

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