2003A&A...409..361C


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST21:38:01

2003A&A...409..361C - Astronomy and Astrophysics, volume 409, 361-368 (2003/10-1)

Extension of the ICRF for selected areas down to the 16th magnitude - II.

CAMARGO J.I.B., DUCOURANT C., TEIXEIRA R., LE CAMPION J.-F., RAPAPORT M. and BENEVIDES-SOARES P.

Abstract (from CDS):

In this paper we provide a major upgrade of the work presented in Camargo et al. (2001A&A...375..308C), aiming at the extension of the ICRF at optical wavelengths in regions of special astronomical interest, using observations from the Bordeaux and Valinhos meridian circles. Along with the new fields, the main differences, when compared to the first release, are: a much larger sky coverage, the replacement of the AC2000 by its upgraded version AC2000.2 as one of the first epoch astrometrical sources, inclusion of Tycho-2 and 2MASS photometry when available, and the correction for a magnitude equation on the Valinhos right ascension system as well. The resulting catalogue contains 678828 entries with positional external precisions, on both coordinates, ranging from 50-60mas (V≤13.5) to 70-140mas (13.5<V≤16.0). For the proper motions, precisions range from 3mas/year to about 15mas/year, depending on magnitude and declination.

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Journal keyword(s): astrometry - reference systems

VizieR on-line data: <Available at CDS (J/A+A/409/361): catalog.dat table1.dat>

Nomenclature: Catalog: BVMC JHHMMSS.sss+DDMMSS.ss N=546459.

Status at CDS:   All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 0

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2020.07.04-21:38:01

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