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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.
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2007
卷号7期号:3页码:345-352
DOI10.1088/1009-9271/7/3/03
产权排序第3完成单位
收录类别SCI
关键词Galaxies : Bl Lacertae Objects : General Galaxies : Fundamental Parameter Galaxies : High-redshift
摘要We 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.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1009-9271
URL查看原文
WOS记录号WOS:000247553300003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SPECTRAL ENERGY-DISTRIBUTIONS ; ACTIVE GALACTIC NUCLEI ; X-RAY-SPECTRA ; ROSAT OBSERVATIONS ; CLASSIFICATORY CRITERIA ; LOUD BLAZARS ; RADIO ; LUMINOSITIES ; CONNECTION ; FREQUENCY
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7030
专题星系研究组
通讯作者Ma, L (reprint author), Yunnan Normal Univ, Dept Phys, Kunming 650092, Peoples R China.
作者单位1.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
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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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