Volume 384, Number 1, MarchII 2002
|Page(s)||24 - 32|
|Section||Cosmology (including clusters of galaxies)|
|Published online||15 March 2002|
Large-scale star formation in galaxies
II. The spirals NGC 3377A, NGC 3507 and NGC 4394. Young star groupings in spirals
Dipart. di Fisica, Università La Sapienza, P.le A. Moro 5, Roma, Italy
2 Oss. Astronomico di Roma, Viale del Parco Mellini 84, Roma, Italy
3 California Inst. of Technology MC 405-47 1200 E. Cal. Blvd Pasadena, CA 91125, USA
4 Dipart. di Matematica, Università La Sapienza, P.le A. Moro 5, Roma, Italy
Corresponding author: A. Vicari, firstname.lastname@example.org
Accepted: 23 November 2001
The identification of young star groupings (YSG) in the three spiral galaxies NGC 3377A, NGC 3507, NGC 4394 is obtained by mean of the statistical method described in Paper I. We find 83, 90, 185 YSGs, respectively. An identification map of YSGs, as well as their size distribution, their B-luminosity function and their surface luminosity density radial behaviour are presented and compared. These data, in addition to those in Paper I, constitute a first sample suitable for seeking correlations among properties of galaxies and their YSGs, which we briefly discuss here.
Key words: galaxies: spiral / galaxies: general / galaxies: stellar content / stars: formation / methods: statistical
© ESO, 2002
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