Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...297...49p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 297, no. 1, p. 49-55
Astronomy and Astrophysics
Astrophysics
16
Interacting Galaxies, Star Distribution, Starburst Galaxies, Supernovae, Galactic Nuclei, Galactic Structure, Kinematics, Radial Distribution, Star Formation, Stellar Luminosity
Scientific paper
In order to investigate the location of supernovae (SNe) in paired and interacting galaxies, the 54 supernovae discovered up to May 1993 in 14 Isolated Pairs of Galaxies and the 32 Interacting Systems were taken as a sample and studied. The whole sample of SNe, as well as a subsample formed of type II, and Ib SNe, whose progenitors are young massive stars, do not appear in any one particluar direction with respect to the companion. On paired and interacting galaxies, the radial distribution of type Ib and II SNe peaks more toward the galaxy centers than it does in isolated galaxies, indicating an enhanced Star Formation Rate (SFR) around the nuclei and in the inner disks. The distribution of SNIa appear similar in both samples, confirming that their progenitors are not the same as those of SNII and IB. The SN rates are related to galaxy luminosity and, as expected, the discovery of SNe is twice more frequent in the brighter galaxy of the pair than in fainter ones. We did not find any relation between the locations of SNe in parent galaxies, the total Star Formation activity and the kinematics of paired and interacting galaxies.
Petrosian Artashes R.
Turatto Massimo
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