The orthogonal gaseous kinematical decoupling in the Sa spiral NGC 2855

被引：15

作者：

Corsini, EM

Pizzella, A

Bertola, F

机构：

[1] Univ Padua, Dipartimento Astron, Osservatorio Astrofis Asiago, I-36012 Asiago, Italy

[2] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 382卷 / 02期

关键词：

galaxies : individual : NGC 2855; galaxies : kinematics and dynamics; galaxies : spiral; galaxies : formation; galaxies : structure;

D O I：

10.1051/0004-6361:20011647

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present major and minor-axis kinematics of stars and ionized gas as well as narrow and broad-band surface photometry of the Sa spiral NGC 2855. In the nuclear regions of this unbarred and apparently undisturbed spiral galaxy the gas is rotating perpendicularly to the galaxy disk. We suggest that this kinematically-decoupled component is the signature of an acquisition process in the history of this galaxy.

引用

页码：488 / 494

页数：7

共 49 条

[1] Growth of galactic bulges by mergers I. Dense satellites [J].