UVR CCD photometry of stars in five sky fields with matched IR/radio sources

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Extragalactic Astronomy and Cosmology
Kharin, AS, Andruk, VN, Bartasiute, S, 1Butenko, GZ, Vedenicheva, IP, Perekhod, AV, 1Sergeev, AV
1International Center for Astronomical, Medical and Ecological Research of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
Start Page: Physics of Stars and Interstellar Medium Russian
Мова: eng
Анотація: 

To make reliable associations of extragalactic radio sources with bright infrared objects and objects at optical wavelengths, we carried out test CCD observations in the Johnson U-, V-, R-filters for five sky fields, containing the sources ICRS 1254+571, ICRS 1345+125, ICRS 1641+399, ICRS 1732+389, and ICRS 1807+698 with the 2-m teleskope of the Terskol Peak Observatory (the Northern Caucasus, Russia). For these 8.5'*8.5' fields, we obtained U-, V-, R-magnitudes and positions of objects down to V ~ 23m. Their equatorial coordinates α and δ were determined in the USNO-A2.0 catalogue system. The objects within the fields were identified by position coincidence with stars and infrared sources of the 2MASS catalogue. The procedures for reducing CCD images within the programm package MIDAS/ROMAFOT, which incorporate a new method for removing flat field, are briefly described. CCD photometry,IR/radio sources

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