Survey of instantaneous 1-22 GHz spectra of 550 compact extragalactic objects with declinations from to ^*

¹ Astro Space Center of the Lebedev Physical Institute, Profsoyuznaya 84/32, Moscow, 117810, Russia
² Special Astrophysical Observatory, Nizhny Arkhyz, Karachaevo–Cherkessia, 357147, Russia
³ Special Astrophysical Observatory, St. Petersburg Branch, St. Petersburg, 196140, Russia

Send offprint request to: Y.Y. Kovalev

Received: 26 March 1999
Accepted: 13 August 1999

Abstract

We present observational results for extragalactic radio sources with milliarcsecond components, obtained with the 600 meter ring radio telescope RATAN–600 from 1st to 22nd December, 1997. For each source, a six frequency broad band radio spectrum was obtained by observing simultaneously with an accuracy up to a minute at 1.4, 2.7, 3.9, 7.7, 13 and 31 cm. The observed list is selected from Preston et al. (1985) VLBI survey and contains all the sources in the declinations between and with a correlated flux density exceeding 0.1 Jy at 13 cm. The sample includes the majority of sources to be studied in the current VSOP survey and the future RadioAstron Space VLBI mission.