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Supernovae in paired galaxies

Published online by Cambridge University Press:  25 July 2014

T. A. Nazaryan ,
A. R. Petrosian ,
A. A. Hakobyan ,
V. Zh. Adibekyan ,
D. Kunth ,
G. A. Mamon ,
M. Turatto  and
L. S. Aramyan
T. A. Nazaryan
Affiliation:
Byurakan Astrophysical Observatory, 0213 Byurakan, Aragatsotn Province, Armenia email: nazaryan@bao.sci.am
A. R. Petrosian
Affiliation:
Byurakan Astrophysical Observatory, 0213 Byurakan, Aragatsotn Province, Armenia email: nazaryan@bao.sci.am
A. A. Hakobyan
Affiliation:
Byurakan Astrophysical Observatory, 0213 Byurakan, Aragatsotn Province, Armenia email: nazaryan@bao.sci.am
V. Zh. Adibekyan
Affiliation:
Centro de Astrofísica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
D. Kunth
Affiliation:
Institut d'Astrophysique de Paris, 98 bis Bd Arago, 75014 Paris, France
G. A. Mamon
Affiliation:
Institut d'Astrophysique de Paris, 98 bis Bd Arago, 75014 Paris, France
M. Turatto
Affiliation:
INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
L. S. Aramyan
Affiliation:
Byurakan Astrophysical Observatory, 0213 Byurakan, Aragatsotn Province, Armenia email: nazaryan@bao.sci.am
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Abstract

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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.

Keywords

supernovae: general – galaxies: fundamental parametersinteractionsstarburst
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 351 - 352
Copyright
Copyright © International Astronomical Union 2014 

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