文章基本信息

标题：The photometric and geometric analysis of galaxy pair KPG 578
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作者：Y.H.M. Hendy ; Gamal B. Ali
期刊名称：NRIAG Journal of Astronomy and Geophysics
印刷版ISSN：2090-9977
电子版ISSN：2090-9985
出版年度：2018
卷号：7
期号：2
页码：194-200
DOI：10.1016/j.nrjag.2018.06.001
语种：English
出版社：Elsevier
摘要：AbstractWe have presented BVR surface photometry and geometric analyses for galaxy pair KPG 578 a, b (NGC 7537, NGC 7541). The contour maps, BVR surface brightness profiles (SB) and geometric profiles (xc, yc, PAandEllip = 1 − b/a) have been used for each galaxy in the pair. The galaxy pair KPG 578 is an intermediate pair with projected separationrp=35.4h70-1kpcand relative velocityΔv=15km/s. The total orbital mass of KPG 578 is determined to beMt=6.03x109M⊙. While the total luminosity and the total orbital mass to the total luminosity of KPG 578 are found to beLt=4.49x1010L⊙andMt/Lt=0.13M⊙/L⊙respectively.While it has been believed that the galaxy pair KPG 578 is non-interacting system, in this work we have found that the galaxy pair KPG 578 has signs of interaction. The KPG 578a contains one short curved tidal tail in north-east. The KPG 578b has two curved tidal tails: the first is long in west and the second is short in east. The geometrical parameters of tidal tails (length (lt), thickness (ht) and area (At)) have been presented in this study.
关键词：KeywordsGalaxiesGalaxy pairsIndividuals: KPG 578