Supernovae in paired galaxies

T. A. Nazaryan , A. R. Petrosian , A. A. Hakobyan , V. Zh. Adibekyan , D. Kunth (1) , G. A. Mamon (1) , M. Turatto , L. S. Aramyan

1 IAP - Institut d'Astrophysique de Paris

We investigate the influence of close neighbor galaxies on the properties of supernovae (SNe) and their host galaxies using 56 SNe located in pairs of galaxies with different levels of star formation (SF) and nuclear activity. The mean distance of type II SNe from nuclei of hosts is greater by about a factor of 2 than that of type Ibc SNe. The distributions and mean distances of SNe are consistent with previous results compiled with the larger sample. For the first time it is shown that SNe Ibc are located in pairs with significantly smaller difference of radial velocities between components than pairs containing SNe Ia and II. We consider this as a result of higher star formation rate (SFR) of these closer systems of galaxies.

Mots clés: supernovae: general; galaxies: fundamental parameters; interactions; starburst; Astrophysics - Cosmology and Nongalactic Astrophysics

Domaines: Planète et Univers [physics]

T. A. Nazaryan, A. R. Petrosian, A. A. Hakobyan, V. Zh. Adibekyan, D. Kunth, et al.. Supernovae in paired galaxies. Multiwavelength AGN Surveys and Studies, Proceedings of the International Astronomical Union, IAU Symposium, 2014, à renseigner, Unknown Region. pp.351-352, ⟨10.1017/S1743921314004281⟩. ⟨insu-03645365⟩