Building the 'JMMC Stellar Diameters Catalog' using SearchCal

Sylvain Lafrasse; Guillaume Mella; Daniel Bonneau; Gilles Duvert; Xavier Delfosse; Olivier Chesneau; Alain Chelli

doi:10.1117/12.857024

2 August 2010 Building the 'JMMC Stellar Diameters Catalog' using SearchCal

Sylvain Lafrasse, Guillaume Mella, Daniel Bonneau, Gilles Duvert, Xavier Delfosse, Olivier Chesneau, Alain Chelli

Proceedings Volume 7734, Optical and Infrared Interferometry II; 77344E (2010) https://doi.org/10.1117/12.857024
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

Citation Download Citation

Sylvain Lafrasse, Guillaume Mella, Daniel Bonneau, Gilles Duvert, Xavier Delfosse, Olivier Chesneau, and Alain Chelli "Building the 'JMMC Stellar Diameters Catalog' using SearchCal", Proc. SPIE 7734, Optical and Infrared Interferometry II, 77344E (2 August 2010); https://doi.org/10.1117/12.857024

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