Optical Spectra of Candidate International Celestial Reference Frame (ICRF) Flat-Spectrum Radio Sources. III
Astrophysics of Galaxies
2017-03-22 v1
Abstract
In extending our spectroscopic program, which targets sources drawn from the International Celestial Reference Frame (ICRF) Catalog, we have obtained spectra for about 160 compact flat-spectrum radio sources and determined redshifts for 112 quasars and radio galaxies. A further 14 sources with featureless spectra have been classified as BL Lac objects. Spectra were obtained at three telescopes: the 3.58-m ESO New Technology Telescope (NTT), and the two 8.2-m Gemini telescopes in Hawaii and Chile. While most of the sources are powerful quasars, a significant fraction of radio galaxies is also included from the list of non-defining ICRF radio sources.
Keywords
Cite
@article{arxiv.1702.06644,
title = {Optical Spectra of Candidate International Celestial Reference Frame (ICRF) Flat-Spectrum Radio Sources. III},
author = {O. Titov and T. Pursimo and H. M. Johnston and L. M. Stanford and R. W. Hunstead and D. L. Jauncey and K. A. Zenere},
journal= {arXiv preprint arXiv:1702.06644},
year = {2017}
}
Comments
Accepted for publication in AJ