Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-10-24
Astronomy and Astrophysics
Astrophysics
19 pages, 20 PostScript figures, accepted for publication in A&A, also available via anonymous ftp at ftp://cutrex.fis.ucm.e
Scientific paper
10.1051/0004-6361:20000153
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.
Gallego Jesus
Gil de Paz Armando
Perez-Gonzalez Pablo. G.
Zamorano Jaime
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