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| Paper: |
The JMMC Stellar Diameters Catalog v2 (JSDC): A New Release Based on SearchCal Improvements |
| Volume: |
485, Astronomical Data Analysis Software and Systems XXIII |
| Page: |
223 |
| Authors: |
Bourgés, L.; Lafrasse, S.; Mella, G.; Chesneau, O.; Bouquin, J. L.; Duvert, G.; Chelli, A.; Delfosse, X. |
| Abstract: |
The JMMC Calibrator Workgroup has long developed methods to
ascertain the angular diameter of stars and provides this expertise in
the SearchCal software. SearchCal dynamically finds
calibrators near science objects by querying CDS hosted
according to observational parameters using either the bright (magK <
5.5) or the faint (magK>5) scenarios. This 2nd
JSDC1 release is based on a new SearchCal
scenario (derived from the bright one) applied to 110 000 Hipparcos
stars instead of aggregating SearchCal results on the whole
celestial sphere. It benefits from important SearchCal
improvements for 3 years: new catalog queries (HIP2, AKARI),
enhanced cross-match algorithm taking into account proper motions /
catalog epochs (ASCC, HIP2, 2MASS) and major changes
on diameter and error computations (more color relations used and
magnitude error propagation). We describe the new JSDC scenario and
SearchCal improvements, study catalog results (more than 55 000
stars, more giant stars) and compare this new release with the former
one (VizieR II/300). |
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