Are type Ia supernovae reliable distance indicators?

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	Are type Ia supernovae reliable distance indicators?
	Lv LZ(吕连忠)1,2,4; Qin, YP 2,3; Zhang FW(张富文)1,4 ; Lue, LZ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
发表期刊	CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
	2007
卷号	7 期号:5 页码:649-656
产权排序	第1完成单位
收录类别	SCI
关键词	Cosmology : Observations Distance Scale Galaxies : Distances And Redshifts Methods : Statistical Supernovae : General
摘要	Recent applications of type Ia supernovae (SNe Ia) in cosmology have successfully revealed the accelerating expansion of the universe. However, as distance indicators used in measuring the expansion history of the universe and probing the nature of dark energy, these objects must pass more strict tests. We propose a K-S test to investigate if there exists any systematic bias when deriving the luminosity distances under the standard candle assumption. Two samples, one comprising 71 high-redshift SNe Ia and the other, 44 nearby ones, are used in our investigation. We find that it is likely there exists a bias in the adopted samples, which is probably caused by a systematic error, e.g. in the color parameter used in the luminosity calibration and a bias may be caused by the SN evolution or by varying properties of the dust surrounding the SNe Ia.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	1009-9271
URL	查看原文
归档日期	2008-01-15
WOS记录号	WOS:000250426300005
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	GAMMA-RAY BURSTS ; HIGH-REDSHIFT SUPERNOVAE ; CARDASSIAN EXPANSION ; DARK ENERGY ; OBSERVATIONAL CONSTRAINTS ; COSMOLOGICAL CONSEQUENCES ; ANGULAR SIZE ; EQUATION ; LUMINOSITY ; UNIVERSE
引用统计
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/7031
专题	星系研究组
通讯作者	Lue, LZ (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
作者单位	1.National Astronomical Observatories / Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 2.Physics Department, Guangxi University, Nanning 530004 3.Center for Astrophysics of Guangzhou University, Guangzhou 510006 4.Graduate School of Chinese Academy of Sciences, Beijing 100049
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Lv LZ,Qin, YP,Zhang FW,et al. Are type Ia supernovae reliable distance indicators?[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(5):649-656.
APA	Lv LZ,Qin, YP,Zhang FW,&Lue, LZ .(2007).Are type Ia supernovae reliable distance indicators?.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(5),649-656.
MLA	Lv LZ,et al."Are type Ia supernovae reliable distance indicators?".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.5(2007):649-656.

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