EDP Sciences
Free access
Issue
A&A
Volume 431, Number 2, February IV 2005
Page(s) 773 - 777
Section On-line catalogs and data
DOI http://dx.doi.org/10.1051/0004-6361:20042039


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, 2

1  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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