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Title:
New UBVRI colour distributions in E-type galaxies . I. The data
Authors:
Idiart, T. P.; Michard, R.; de Freitas Pacheco, J. A.
Affiliation:
AA(Instituto de Astronomia, Geofisica e Ciências Atmosféricas, Depto. de Astronomia, Universidade de São Paulo, Av. Miguel Stefano, 4200-CEP, 04301-904 S. Paulo, SP-Brazil ), AB(Observatoire de Paris, LERMA, 77 Av. Denfert-Rochereau, 75015 Paris, France ), AC(Observatoire de la Côte d'Azur, Département Augustin Fresnel, BP 4229, 06304 Nice Cedex 4, France )
Publication:
Astronomy and Astrophysics, v.383, p.30-45 (2002) (A&A Homepage)
Publication Date:
01/2002
Origin:
A&A
A&A Keywords:
GALAXIES: ELLIPTICAL AND LENTICULARS, CD, GALAXIES: ISM
DOI:
10.1051/0004-6361:20011699
Bibliographic Code:
2002A&A...383...30I

Abstract

New colour distributions have been derived from wide field UBVRI frames for 36 northern bright elliptical galaxies and a few lenticulars. The classical linear representations of colours against log r were derived, with some improvements in the accuracy of the zero point colours and of the gradients. The radial range of significant measurements was enlarged both towards the galaxy center and towards the outskirts of each object. Thus, the ``central colours'', integrated within a radius of 3\arcsec, and the ``outermost colours'' averaged near the muV =24 surface brightness could also be obtained. Some typical deviations of colour profiles from linearity are described. Colour-colour relations of interest are presented. Very tight correlations are found between the U-V colour and the Mg2 line-index, measured either at the Galaxian center or at the effective radius. Based in part on observations collected at the Observatoire de Haute-Provence. Tables 9-11 plus detailed tables for each object are available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/383/30

Associated Articles

Part  2     Part  3     Part  4     Part  5     Part  6     Part  7     Part  8     Part  9     Part 1     Catalog Description     Part  2    

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