Generalizations of the Tully-Fisher relation for early- and late-type galaxies

被引:45
作者
De Rijcke, Sven [1 ]
Zeilinger, Werner W.
Hau, George K. T.
Prugniel, P.
Dejonghe, Herwig
机构
[1] Univ Ghent, Sterrenkundig Observ, B-9000 Ghent, Belgium
[2] Univ Vienna, Inst Astron, A-1180 Vienna, Austria
[3] Univ Durham, Dept Phys, Durham DH1 3LE, England
[4] Univ Lyon, F-69000 Lyon, France
[5] Univ Lyon 1, F-69622 Villeurbanne, France
[6] Observ Lyon, Ctr Rech Astron Lyon, F-69561 St Genis Laval, France
[7] CNRS, UMR 5574, Lyon, France
[8] Ecole Normale Super Lyon, F-69364 Lyon, France
[9] Observ Paris, GEPI Observ, F-92195 Meudon, France
关键词
galaxies : dwarf; galaxies : kinematics and dynamics; galaxies : structure;
D O I
10.1086/512717
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We study the locus of dwarf and giant early- and late-type galaxies on the Tully-Fisher relation (TFR), the stellar mass Tully-Fisher relation (sTFR), and the so-called baryonic or H I gas+ stellar mass Tully-Fisher relation (gsTFR). We show that early- type and late-type galaxies, from dwarfs to giants, trace different yet approximately parallel TFRs. Surprisingly, early- type and late-type galaxies trace a single yet curved sTFR over a range of 3.5 orders of magnitude in stellar mass. Moreover, all galaxies trace a single, linear gsTFR, over 3.5 orders of magnitude in H I gas+ stellar mass. Dwarf ellipticals, however, lie slightly below the gsTFR. This may indicate that early- type dwarfs, contrary to the late types, have lost their gas, e. g., by galactic winds or ram pressure stripping. Overall, environment only plays a secondary role in shaping these relations, making them a rather "clean'' cosmological tool. Lambda CDM simulations predict roughly the correct slopes for these relations.
引用
收藏
页码:1172 / 1175
页数:4
相关论文
共 42 条