Building the 'JMMC Stellar Diameters Catalog' using SearchCal - Astrophysics > Instrumentation and Methods for AstrophysicsReportar como inadecuado




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Abstract: The JMMC Calibrator Workgroup has long developed methods to ascertain theangular diameter of stars, and provides this expertise in the SearchCalsoftware. SearchCal dynamically finds calibrators near science objects byquerying CDS hosted catalogs according to observational parameters. Initiallylimited to bright objects K magnitude <- 5.5, it has been upgraded with anew method providing calibrators without any magnitude limit but those ofqueried catalogs. We introduce here a new static catalog of stellar diameters,containing more than 38000 entries, obtained from SearchCal results aggregationon the whole celestial sphere, complete for all stars with HIPPARCOSparallaxes. We detail the methods and tools used to produce and study thiscatalog, and compare the static catalog approach with the dynamical queryingprovided by SearchCal engine. We also introduce a new Virtual Observatoryservice, enabling the reporting of, and querying about, stars flagged as -badcalibrators- by astronomers, adding this ever-growing database to our SearchCalservice.



Autor: Sylvain Lafrasse LAOG, Guillaume Mella LAOG, Daniel Bonneau FIZEAU, Gilles Duvert LAOG, Xavier Delfosse LAOG, Olivier Chesneau FI

Fuente: https://arxiv.org/







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