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Effects of redshift on the classifying criteria of BL lacertae objects
Ma L(马力)1,3; Chen LE(陈洛恩)2,3; Xie GZ(谢光中)3,4; Ren, JY2; Xie, ZH1; Zhou SB(周曙白)3,4; Wu, H1; Mei, DC4; Ma, L (reprint author), Yunnan Normal Univ, Dept Phys, Kunming 650092, Peoples R China.
Source PublicationCHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2007
Volume7Issue:3Pages:345-352
DOI10.1088/1009-9271/7/3/03
Contribution Rank第3完成单位
Indexed BySCI
KeywordGalaxies : Bl Lacertae Objects : General Galaxies : Fundamental Parameter Galaxies : High-redshift
AbstractWe have collected a sample of 70 BL Lacs (33 radio-selected BL Lacs and 37 X-ray selected BL Lacs) with multi-waveband data for investigating the classifying criteria of BL Lacertae Objects. For each source, we estimate its luminosities in radio, optical and X-ray, the broad-band spectral index from radio to X-ray and the peak frequency' of the synchrotron emission, and make a statistical analysis of the data obtained. Our main results are as follows: (1) The broad-band spectral index and the peak frequency have no correlation with the redshift, while they are inversely correlated with each other and they could be regarded as equivalent classifying criteria of BL Lac objects. (2) There are significant effects of the luminosity/redshift relation on the observed luminosity distribution in our sample, hence, if the radio luminosity is to be used as a classifying criterion of BL Lac objects, it should not be regarded as equivalent to the broad-band spectral index or the peak frequency. (3) Our results supply a specific piece of evidence for the suggestion that the use of luminosities always introduces a redshift bias to the data and show that the location of the peak frequency is not always linked to the luminosity of any wave band.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN1009-9271
URL查看原文
WOS IDWOS:000247553300003
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSPECTRAL ENERGY-DISTRIBUTIONS ; ACTIVE GALACTIC NUCLEI ; X-RAY-SPECTRA ; ROSAT OBSERVATIONS ; CLASSIFICATORY CRITERIA ; LOUD BLAZARS ; RADIO ; LUMINOSITIES ; CONNECTION ; FREQUENCY
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7030
Collection星系研究组
Corresponding AuthorMa, L (reprint author), Yunnan Normal Univ, Dept Phys, Kunming 650092, Peoples R China.
Affiliation1.Department of Physics, Yunnan Normal University, Kunming 650092
2.Department of Physics, Yuxi Normal College, Yuxi 653100
3.National Astronomical Observatories/ Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011
4.Department of Physics, Yunnan University, Kunming 650091
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Ma L,Chen LE,Xie GZ,et al. Effects of redshift on the classifying criteria of BL lacertae objects[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2007,7(3):345-352.
APA Ma L.,Chen LE.,Xie GZ.,Ren, JY.,Xie, ZH.,...&Ma, L .(2007).Effects of redshift on the classifying criteria of BL lacertae objects.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,7(3),345-352.
MLA Ma L,et al."Effects of redshift on the classifying criteria of BL lacertae objects".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 7.3(2007):345-352.
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