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Issue A&A
Volume 370, Number 2, May I 2001
Page(s) 409 - 425
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20010254



A&A 370, 409-425 (2001)
DOI: 10.1051/0004-6361:20010254

A new sample of large angular size radio galaxies

I. The radio data
L. Lara1, W. D. Cotton2, L. Feretti3, G. Giovannini3, 4, J. M. Marcaide5, I. Márquez1 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  Dipartimento di Fisica, Universitá di Bologna, via B. Pichat 6/2, 40127 Bologna, Italy
5  Departamento de Astronomía, Universitat de València, 46100 Burjassot, Spain

(Received 29 December 2000 / Accepted 30 January 2001 )

Abstract
We present a new sample of 84 large angular size radio galaxies selected from the NRAO VLA Sky Survey. Radio sources with declination above $+60^{\circ}$, total flux density greater than 100 mJy at 1.4 GHz and angular size larger than 4$\arcmin$ have been selected and observed with the VLA at 1.4 and 4.9 GHz. The radio observations attempt to confirm the large angular size sources and to isolate the core emission for optical identification. In this paper, the first of a series of three, we present radio maps of 79 sources from the sample and discuss the effects of the selection criteria in the final sample. 37 radio galaxies belong to the class of giants, of which 22 are reported in this paper for the first time.


Key words: galaxies: active -- galaxies: nuclei -- galaxies: jets -- radio continuum: galaxies

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

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© ESO 2001


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