W~UMa-type Systems in the Central Baade Window Discovered in the OGLE\n Experiment

1995/02/20 by S. M. Ruciński, Rucinski, Slavek M.
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies

paper · pdf · doi:10.48550/arxiv.astro-ph/9502086

openalex publication_date 1995/02/20 · openalex created_date 2025/10/24 · openalex updated_date 2026/07/28

Abstract

77 W~UMa-type systems to I=18 mag in one of the 21 fields of OGLE have been\nassessed in terms of utility for extraction of astrophysical information from\ntime-independent data such as colors, periods, maximum magnitudes, and\nvariability amplitudes in the final global OGLE catalog which will contain\n>1000 contact binaries. A subset of systems with absolute magnitudes M_I <\n3 permits mapping of stellar distribution towards the Galactic Bulge to about\n6~kpc from us, with indications that the reddening E_V-I > 0.6.\n

Related

• Contact Binaries in OGLE-I Database
• The Optical Gravitational Lensing Experiment. The General Catalog of Stars in the Galactic Bulge. I. The Stars in the Central Baade's Window OGLE Field BWC
• THE OPTICAL GRAVITATIONAL LENSING EXPERIMENT. THE CATALOG OF PERIODIC VARIABLE STARS IN THE GALACTIC BULGE. II. PERIODIC VARIABLES IN FOUR BAADE'S WINDOW FIELDS: BW1, BW2, BW3 AND BW4
• Massive Variability Search and Monitoring by OGLE and ASAS
• The Variable Sky Through the OGLE Eye