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Total magnitudes of Virgo galaxies. II. An investigation into the m(p) scale of Volume I of Zwicky et al.'s Catalogue of Galaxies and of Clusters of Galaxies

文献类型：期刊论文

作者Young, CKS; Shao, ZY
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
出版日期2001-09-01
卷号18期号:2页码:129-135
关键词catalogues galaxies : clusters : individual (Virgo) galaxies : fundamental parameters galaxies : photometry
英文摘要We investigate the photographic-magnitude (in.) scale of Volume I of the Catalogue of Galaxies and of Clusters of Galaxies for galaxies in the Virgo direction. It is found that for 11.5 less than or equal to B-t < 14.5, the m(p) values listed correspond very closely (with a scatter of only 0.16 magnitude) to blue magnitudes measured to the (B) = 24.4 isophote. If m(p) values need to be used as estimates of total blue magnitude the scatter is 0.27 magnitude over the same range in B-t and the mean offset is m(p) - B-t = 0.28 magnitude. However, a serious scale error at the bright end causes both the isophotal and total luminosities of galaxies brighter than Bt similar to 11.5 to be severely underestimated. At the faint end there also appears to be a significant scale error. This causes galaxy luminosities to be seriously overestimated faintward of B-t similar to 14.5. We demonstrate that this is a real effect based on a detailed galaxy-by-galaxy study of the catalogue's completeness down to B-t = 17.0. The catalogue is found only to be complete to B-t similar to 14.7 whilst its degree. of incompleteness is found to be relatively constant at the 30% level over the range 14.75 less than or equal to B-t < 15.75. Most of the missing objects are found to be elliptical galaxies and so late-type objects are over-represented at the faint end.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]PHOTOMETRY
收录类别SCI
语种英语
WOS记录号WOS:000171977000002
源URL[http://119.78.226.72/handle/331011/28312]  
专题上海天文台_星系宇宙学重点实验室
作者单位1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Univ New S Wales, Sch Phys, Dept Astrophys & Opt, Sydney, NSW 2052, Australia
4.Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England
推荐引用方式
GB/T 7714		 Young, CKS,Shao, ZY. Total magnitudes of Virgo galaxies. II. An investigation into the m(p) scale of Volume I of Zwicky et al.'s Catalogue of Galaxies and of Clusters of Galaxies[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,2001,18(2):129-135.
APA Young, CKS,&Shao, ZY.(2001).Total magnitudes of Virgo galaxies. II. An investigation into the m(p) scale of Volume I of Zwicky et al.'s Catalogue of Galaxies and of Clusters of Galaxies.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,18(2),129-135.
MLA Young, CKS,et al."Total magnitudes of Virgo galaxies. II. An investigation into the m(p) scale of Volume I of Zwicky et al.'s Catalogue of Galaxies and of Clusters of Galaxies".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA 18.2(2001):129-135.

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来源：上海天文台

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