Star Formation in the Elliptical (?) Galaxy NGC 5173

被引：0

作者：

Sil'chenko, O. K. ^{[1
]}

Proshina, I. S. ^{[1
]}

Moiseev, A., V ^{[1
,2
]}

Oparin, D., V ^{[2
]}

机构：

[1] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119234, Russia

[2] Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Russia

来源：

ASTROPHYSICAL BULLETIN | 2022年 / 77卷 / 01期

关键词：

galaxies: elliptical and lenticular; galaxies: evolution; galaxies: star formation; galaxies: individual: NGC5173; ATLAS(3D) PROJECT; STELLAR STRUCTURE; SPITZER SURVEY; IONIZED-GAS; CLASSIFICATION; EVOLUTION; CO; HYDROGEN; MASS;

D O I：

10.1134/S1990341322010102

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the MaNGaL tunable-filter photometer at the 2.5-m telescope of the Caucasian Mountain Observatory of the Sternberg Astronomical Institute of Lomonosov Moscow State University, we studied star formation in an early-type gas-rich galaxy, which was until now considered to be elliptical, NGC 5173. The gas has probably been accreted in the recent past by the galaxy from a direction inclined to its disk. Star formation that we observe now has led in the past 400 Myr to the formation of compact massive clusters with shock excitation of gas around them-a star formation behavior corresponding to what is usually observed in the interacting Antennae-like galaxies. In combination with the almost solar metallicity of the gas, this allows us to conclude that NGC 5173 has assimilate a very gas-rich companion with a mass of at least 10-20% of its own stellar mass.

引用

页码：40 / 50

页数：11

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