Deep RATAN-600 surveys at the declination of SS 433 carried out in 1987–2000 at 7.6 and 2.7 cm

Autor:	A. V. Temirova, N. S. Soboleva, N. N. Bursov
Rok vydání:	2006
Předmět:	Physics Spectral index media_common.quotation_subject Flux Astronomy and Astrophysics Astrophysics Declination law.invention Square degree Telescope Wavelength Space and Planetary Science law Sky media_common
Zdroj:	Astronomy Reports. 50:341-345
ISSN:	1562-6881 1063-7729
Popis:	We discuss the results of deep surveys of a ±10′ strip of the sky, centered on the declination of SS 433, carried out on the Northern sector of the RATAN-600 telescope at 2.7 and 7.6 cm in 1987–2000. The survey objects are cross-identified with sources in the NVSS catalog and the corresponding two-frequency spectral indices determined. We find a decrease in the mean spectral index in the transition from objects with flux densities S 21 ≥ 30 mJy to those with 15 < S 21 < 30 mJy. The constructed log N — logS relation at 2.7 cm has a slope of 3/2 at flux densities ≥300 mJy and flattens at weaker flux densities. The 1.4 GHz (NVSS), 3.94 GHz (RATAN-600), and 11.11 GHz (RATAN-600) data are used to estimate the number of objects per square degree at a wavelength of 1 cm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::00e7ee724297e863ad1e12bf3ba81ca3 https://doi.org/10.1134/s1063772906050015 Zobrazit plný text záznamu Plný text ve formátu PDF