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A&A 431, 773-777 (2005)
DOI: 10.1051/0004-6361:20042039
CHARM2: An updated Catalog of High Angular Resolution Measurements
A. Richichi1, I. Percheron1 and M. Khristoforova1, 21 European Southern Observatory, Karl-Schwarzschildstr. 2, 85748 Garching bei München, Germany
e-mail: arichich@eso.org
2 Dept. of Astronomy, Physics Faculty, Kazan State University, Kremlevskaya 18, Kazan 420008, Russia
(Received 21 September 2004 / Accepted 8 October 2004)
Abstract
We present an update of the
Catalog of High Angular Resolution Measurements
(CHARM, Richichi & Percheron 2002, A&A, 386, 492),
which includes results available until July 2004.
CHARM2 is a compilation of direct measurements by high
angular resolution methods, as well as indirect estimates
of stellar diameters. Its main goal is to provide
a reference list of sources which can be used for
calibration and verification observations with long-baseline
optical and near-IR interferometers. Single
and binary stars are included, as are complex objects from circumstellar
shells to extragalactic sources.
The present update provides an increase of almost a factor
of two over the previous edition. Additionally, it
includes several corrections and improvements, as well
as a cross-check with the valuable public release observations
of the ESO Very Large Telescope Interferometer (VLTI).
A total of 8231 entries for 3238 unique
sources are now present in CHARM2.
This represents an increase of a factor of 3.4 and 2.0, respectively,
over the contents of the previous version of CHARM.
Key words: techniques: high angular resolution -- techniques: interferometric -- catalogs -- occultations -- stars: binaries: general -- stars: fundamental parameters
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