Star Complexes and Stellar Populations in NGC 6822

被引：0

作者：

Karampelas, A. ^{[1
]}

Kontizas, E. ^{[2
]}

Dapergolas, A. ^{[2
]}

Livanou, E. ^{[1
]}

Kontizas, M. ^{[1
]}

Belas-Velidis, I. ^{[2
]}

Vilchez, J. M. ^{[3
]}

机构：

[1] Univ Athens, Dept Astrophys Astron & Mech, Fac Phys, GR-15784 Athens, Greece

[2] Natl Observ Athens, Inst Astron & Astrophys, Athens 11810, Greece

[3] CSIC, Inst Astrofis Andalucia, Apartado 3004, Granada 18080, Spain

来源：

ADVANCES IN HELLENIC ASTRONOMY DURING THE IYA09 | 2010年 / 424卷

关键词：

MAGELLANIC-CLOUD; REGIONS;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Star complexes (large scale star forming regions) seem to belong to a star formation hierarchy, in which stars form in hierarchically clustered systems from sub-parcec to kiloparcec scales. Their properties seem to be universal, revealing their importance in studies of star formation in galaxies and in galaxy evolution. We have traced and mapped the star complexes of the Local Group Dwarf Irregular Galaxy NGC 6822 and compared with the star complexes of the Magellanic Clouds. Indications of hierarchical star formation, in terms of spatial distribution, time evolution and preferable sizes were found in NGC 6822 and the Magellanic Clouds. Moreover, the spatial distribution of the various age stellar populations of NGC 6822 has indicated traces of an interaction, dated before 350 Myr.

引用

页码：240 / +

页数：2

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