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Issue A&A
Volume 378, Number 3, November II 2001
Page(s) 826 - 836
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20011279



A&A 378, 826-836 (2001)
DOI: 10.1051/0004-6361:20011279

A new sample of large angular size radio galaxies

II. The optical data
L. Lara1, I. Márquez1, W. D. Cotton2, L. Feretti3, G. Giovannini3, 4, J. M. Marcaide5 and T. Venturi3

1  Instituto de Astrofísica de Andalucía (CSIC), Apdo. 3004, 18080 Granada, Spain
2  National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903-2475, USA
3  Istituto di Radioastronomia (CNR), via P. Gobetti 101, 40129 Bologna, Italy
4  Dipartamento di Fisica, Universitá di Bologna, via B. Pichat 6/2, 40127 Bologna, Italy
5  Departimento de Astronomía, Universitat de València, 46100 Burjassot, Spain

(Received 3 August 2001 / Accepted 11 September 2001)

Abstract
We constructed and presented in the first paper of this series a new sample of 84 large angular size radio galaxies by selecting from the NRAO VLA Sky Survey objects with angular size $\ge$ $4\arcmin$, declination above $+60^{\circ}$ and total flux density at 1.4 GHz $\ge 100$ mJy. In this paper we present optical spectra and images of those galaxies associated with the radio emission for which no redshift was known prior to our observations. Optical counterparts have been identified for all (but one) members of the sample. After our observations, a reliable spectroscopic redshift is available for 67 objects (80% ) from the sample. This paper, the second of a series of three, contributes to increase the number of well-defined samples of radio galaxies with ample spectroscopic information.


Key words: galaxies: active -- galaxies: nuclei -- galaxies: distances and redshift -- radio continuum: galaxies

Offprint request: L. Lara, lucas@iaa.csic.es

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© ESO 2001

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