Tully-Fisher关系之研究进展  

Progress of Studies on the Tully-Fisher Relation

作　　者：赵君亮[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《天文学进展》2010年第2期164-178,共15页Progress In Astronomy

基　　金：国家自然科学基金面上资助项目(10773020);重点资助项目(10778003;10833005)

摘　　要：Tully-Fisher关系(TF关系)对于宇宙距离尺度和星系演化研究具有重要意义。对TF关系的发现史和嗣后的研究进展做了简要的评述,包括红外波段的TF关系、星系倾角问题、影响TF关系的若干因素、透镜星系的TF关系、重子TF关系、TF关系的宇宙学演化等。In 1977,Tully and Fisher found a remarkable relation between the luminosity and the maximum rotational velocity of late-type galaxies,This＂TF relation（TFR）＂can be exploited to study the dynamical evolution and star formation history of disk galaxies,and provides a powerful tool to estimate distances of distant objects such as galaxy clusters.Since then lots of various studies concerning TFR have been done by different authors. In 1979,infrared H-band magnitude was firstly introduced by Aaronson et al.to improve the TFR.Observations in the infrared band can offer two main distinct advantages over visible wave- lengths：first,that the internal extinction at H band is only 10%that in B band,and second, that the infrared is a better tracer of the stellar mass than B luminosity,which leads to a tighter TFR with smaller scatter.In the following years,J and K bands have also been used to establish the TFR. There are two fundamental observational quantities in the TFR：the apparent magnitude and the maximum rotational velocity of a galaxy,both of them must be corrected for observational effects caused by the inclination of the galaxy;the internal extinction correction can be estimated by modeling the distribution of extinction materials.In order to reduce uncertainties of inclination corrections one must carefully select the sample galaxies with a proper range of inclinations. Besides,there are a number of factors which can have effects on the TFR,including wavebands used for observations,morphology and surface brightness of galaxies,and galactocentric radii （radial TFR）. While a work published in 1983 showed no evidence for any actual correlation between galactic luminosity and the observed mean stellar rotation speed for S0 galaxies,the an I-band TFR was firstly found from a sample of 18 nearby S0 galaxies more than 10 years later,with little zero point offset from the TFR of late-type galaxies and a big scatter in the relation.In the recent 10 years or so,from observational data in some different waveban

关 键 词：TF关系 晚型星系 星系演化 

分 类 号：P156[天文地球—天文学]