Optical photometry of the UCM lists I and II

Free access article

Issue		A&A Volume 365, Number 3, January III 2001


Page(s)		370 - 391
Section		Extragalactic astronomy
DOI		http://dx.doi.org/10.1051/0004-6361:20000153

A&A 365, 370-391 (2001)
DOI: 10.1051/0004-6361:20000153

II. B band surface photometry and morphological discussion

P. G. Pérez-González, J. Gallego, J. Zamorano and A. Gil de Paz

Departamento de Astrofísica, Universidad Complutense de Madrid, Av. Complutense s/n. 28040 Madrid, Spain

(Received 2 August 2000 / Accepted 16 October 2000)

Abstract
We present Johnson B surface photometry for the UCM Survey galaxies. One-dimensional bulge-disk decomposition is attempted, discussing on fitting functions and computational procedures. The results from this decomposition, jointly with concentration indices and an asymmetry coefficient, are employed to study the morphological properties of these galaxies. We also compare our results with the previous morphological classification established using Gunn r imaging data and with other samples of galaxies. No major statistical differences in morphology are found between red and blue data, although some characteristics such as size and luminosity concentration vary. We find a correlation between luminosity and size. Several parameters are used to segregate the objects according to their morphological type.

Key words: galaxies: photometry -- galaxies: fundamental parameters -- surveys-galaxies-spiral, galaxies-starburst -- methods: data analysis

Offprint request: P. G. Pérez-González

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