ISM ENRICHMENT AND LOCAL POLLUTION IN DWARF GALAXIES

被引:3
|
作者
Kunth, D. [1 ]
Lebouteiller, V. [2 ]
机构
[1] Inst Astrophys, 98 Bis Blvd Arago, F-75014 Paris, France
[2] CEA Saclay, L Orme Mersiers, Serv Astrophysique, F-91191 Gif Sur Yvette, France
来源
CRAL-2010: A UNIVERSE OF DWARF GALAXIES | 2011年 / 48卷
关键词
SPECTROSCOPIC-EXPLORER OBSERVATIONS; BLANKETED MODEL ATMOSPHERES; STAR-FORMATION HISTORY; TO-GAS RATIO; I-ZW; 18; INTERSTELLAR-MEDIUM; FUSE OBSERVATIONS; OXYGEN ABUNDANCE; ABSORPTION-LINE; IONIZED-GAS;
D O I
10.1051/eas/1148023
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The fate of metals after they are released in starburst episodes is still unclear. What phases of the interstellar medium are involved, and in which timescales? Evidence has grown over the past few years that the neutral phase of blue compact dwarf (BCD) galaxies may be metal-deficient as compared to the ionized gas of their H it regions. These results have strong implications for our understanding of the chemical evolution of galaxies. We review here the main results and the main caveats in the metal abundance determination from far-UV absorption-lines. We also discuss possible scenarios concerning the journey of metals into the interstellar medium.
引用
收藏
页码:95 / +
页数:3
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