Type Ia supernovae: Non-standard candles of the universe

被引：17

作者：

Bogomazov, A. I. ^{[1
]}

Tutukov, A. V. ^{[2
]}

机构：

[1] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119991, Russia

[2] Russian Acad Sci, Inst Astron, Moscow 119017, Russia

来源：

ASTRONOMY REPORTS | 2011年 / 55卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

ACCRETING WHITE-DWARFS; STAR-FORMATION RATE; ACCELERATING UNIVERSE; INTERGALACTIC DUST; EVOLUTION; GALAXIES; MASS; EXTINCTION; BINARIES; RATES;

D O I：

10.1134/S1063772911060023

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze the influence of the evolution of light absorption by gray dust in the host galaxies of type Ia supernovae (SN Ia) and the evolution of the mean combined mass of close-binary carbon-oxygen white dwarfs merging due to gravitational waves (SN Ia precursors) on the interpretation of Hubble diagrams for SN Ia. A significant increase in the mean SN Ia energy due to the higher combined masses of merging dwarfs should be observable at redshifts z > 2. The observed relation between the distance moduli and redshifts of SN Ia can be interpreted not only as evidence for accelerated expansion of the Universe, but also as indicating time variations of the gray-dust absorption of light from these supernovae in various types of host galaxies, observational selection effects, and the decreasing mean combined masses of merging degenerate dwarfs.

引用

页码：497 / 504

页数：8

共 50 条

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