- NEWS RELEASE -

MULTICOLOR BVR CATALOG RELEASED
Maciejewski, G.
July 20, 2004

Recent four month-long observations gathered in BVR bands allowed us to create the Catalog in BVR - SAVS_BVR. Among 18.400 stars, which were detected on near-V band exposures, 16.000 were also measured in near-R and only 10.700 in near-B. The catalog contains SAVS designation of observed star, mean magnitudes in BVR, magnitude errors, number of data points in every band, equatorial coordinates (J2000), mean epoch of observation and a name of a field. The sky coverage is illustrated in Figure below.


Location of 13 fields in constellations of Cancer, Coma Berenices and Canes Venatici, monitored in BVR filters. North is up and East to the left.

The full catalog is available in Catalogs section. To derive transformation of our instrumental magnitudes m_B, m_V, m_R to the standard BVR system we cross-identified observed stars with the General Catalog of Photometric Data and the UBVRIJKLMNH Photoelectric Photometric Catalogue for BV and R bands, respectively. To find transformation coefficients for BV equations we used 669 stars with well known photometry but we found only 69 stars with known R photometry.

The data stored in the BVR Catalog allowed us to plot V-R vs. B-V color-color diagram for over 10.600 stars. The diagram is presented in Figure below.


Color-color diagram for over 10.600 stars

The detailed list of fields is available here. The light curves of individual stars and/or whole photometric databases are available upon request.

 

Last modified: Sep 27, 2004.