Free Access
Issue
Astron. Astrophys. Suppl. Ser.
Volume 120, Number 3, December_II 1996
Page(s) 385 - 401
DOI https://doi.org/10.1051/aas:1996301
Published online 15 December 1996
Photometric and morphological analysis of UCM galaxies. II. Statistical results and interpretation DOI: 10.1051/aas:1996301

Astronomy and Astrophysics Supplement Series, Vol. 120, December II 1996, 385-401

Photometric and morphological analysis of UCM galaxies. gif II. Statistical results and interpretation

A.G. Vitores , J. Zamorano , M. Rego , J. Gallego and O. Alonso
Send offprint requests to: J. Zamorano

Dpto Astrofísica, Facultad CC Físicas Universidad Complutense, E-28040 Madrid, Spain
EUIT Industrial, Universidad Politécnica, E-28012 Madrid, Spain

Received July 31, 1995; accepted May 2, 1996

Abstract:

We present the results of Thuan & Gunn r CCD imaging observations of the Universidad Complutense de Madrid (UCM) sample of emission-line galaxies (ELGs) selected by the presence of H emission in low resolution objective-prism spectra. In this work, a total of 212 objects from the UCM survey have been photometrically and morphologically characterized. In a previous paper, the observations, basic reductions and morphological classification for the UCM objects were presented. Here, we analyse the statistical properties of the sample and their interpretations. The main results obtained are as follows: (1) Our survey is specially effective in the detection of ELGs smaller and less luminous than normal spirals (the median values of the UCM sample are = -20.6 and = 19.4 kpc, for = 50 km s Mpc). (2) The sample presents a very heterogeneous morphological population of galaxies. There is a clear predominance of late-type galaxies, with 66% being Sb or later. (3) We have found a set of galaxies specially interesting. In particular, we propose 9 candidates to BCD (blue compact dwarf galaxy), five of them previously unknown. (4) About 10% of the ELGs of the sample show typical parameters of S0 types, and in the subsample of 16 UCM interacting galaxies, 25% are S0 type galaxies. (5) In the set of UCM galaxies inside the Coma cluster, 71% exhibit Hubble types Sb or later.

Key words: surveys --- galaxies: fundamental parameters --- galaxies: starbust --- galaxies: photometry



Copyright EDP Sciences
web@edpsciences.com

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.