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Are type Ia supernovae reliable distance indicators?
Lv LZ(吕连忠)1,2,4; Qin, YP2,3; 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
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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
ISSN1009-9271
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
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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
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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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