Five Supernova Survey Galaxies in the Southern Hemisphere: Supernova Ia Rates

被引:0
|
作者
Hakobyan, A. [1 ]
Petrosian, A. [1 ,2 ]
Mamon, G. [3 ]
McLean, B. [4 ]
Kunth, D. [3 ]
Turatto, M. [5 ]
Cappellaro, E. [6 ]
Mannucci, F.
Allen, R. [4 ]
Panagia, N. [4 ,7 ,8 ]
Della Valle, M. [9 ,10 ]
Petrosyan, G. [2 ]
机构
[1] Byurakan Astrophys Observ, Byurakan 0213, Aragatsotn Prov, Armenia
[2] Yerevan State Univ, Dept Gen Phys & Astrophys, Yerevan 0025, Armenia
[3] CNRS, UPMC, UMR 7095, Inst dAstrophys Paris, F-75014 Paris, France
[4] Space Telescope Sci Inst, Baltimore, MD 21218 USA
[5] INAF Osservatorio Astronomico Trieste, I-34143 Trieste, Italy
[6] INAF Osservatorio Astronomico Padova, I-35122 Padua, Italy
[7] INAF Osservatorio Astrofisico Catania, I-95123 Catania, Italy
[8] Supernova Ltd, Virgin Gorda, British Virgin Isl
[9] INAF Osservatorio Astronomico Capodimonte, I-80131 Naples, Italy
[10] Internat Ctr Relativist Astrophys, I-65122 Pescara, Italy
关键词
supernovae: general; galaxies:; general; stellar content;
D O I
10.1017/S1743921312014615
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Based on the database of 56 supernovae (SNe) events discovered in 3838 galaxies of the southern hemisphere, we compute the rate of SNe of different types along the Hubble sequence normalized to the optical and near-infrared (NIR) luminosities as well as to the stellar mass of the galaxies. We find that the rates of Type Ia SNe show a dependence on both morphology and colors of the galaxies, and therefore, on the star-formation activity. The rate of SNe Ia can be explained by assuming that at least 15% of Ia events in spiral galaxies originate in relatively young stellar populations. We also find that the rates show no modulation with nuclear activity or environment.
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页码:24 / +
页数:2
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