Disentangling Nitrogen and Carbon Abundances in Early-Type Galaxies

被引：0
|
作者：
Toloba, Elisa [1 ]
Sanchez-Blazquez, Patricia [2 ,3 ]
Gorgas, Javier [1 ]
Gibson, Brad K. [2 ]
机构：
[1] Univ Complutense Madrid, E-28040 Madrid, Spain
[2] Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England
[3] Inst Astrofis Canarias, San Cristobal la Laguna 38205, Spain
来源：
STELLAR POPULATIONS: PLANNING FOR THE NEXT DECADE | 2010年 / 262期
关键词：
galaxies: abundances; galaxies: elliptical and lenticular; cD; galaxies: evolution; STELLAR POPULATIONS; ELLIPTIC GALAXIES; DIFFERENT ENVIRONMENTS; ULTRAVIOLET-SPECTRA; INDEXES; BLUE;
D O I：
10.1017/S1743921310003601
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The near-UV NH3360 feature has been measured in a sample of 35 early-type galaxies in a wide range of masses and environments. We found that, contrary to what is seen with Mg- and C-sensitive Lick-style indices, NH3360 does not vary significantly with galaxy velocity dispersion. When compared with solar-scaled stellar population models N/Fe appears mildly enhanced. We do not detect any difference in the NH3360 index between galaxies in different environments. We outline the important implications of these conclusions for our understanding of the origin of carbon and nitrogen, and the star formation histories of early-type galaxies.
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收藏
页码：438 / +
页数：2
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