Star formation in the tidal tail of the Leo Triplet galaxy NGC 3628

被引:23
作者
Chromey, FR [1 ]
Elmegreen, DM [1 ]
Mandell, A [1 ]
McDermott, J [1 ]
机构
[1] Vassar Coll, Dept Phys & Astron, Poughkeepsie, NY 12604 USA
关键词
galaxies; individual; (NGC; 3628); interactions; stellar content;
D O I
10.1086/300369
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Deep CCD images of the Leo Triplet in the B and I bands were obtained with the Burrell-Schmidt telescope at Kitt Peak National Observatory to study the similar to 80 kpc stellar tail, or "plume," extending from NGC 3628, which resulted from the tidal effects of its companion galaxies NGC 3627 and NGC 3623. This plume consists of clumpy star formation regions that are near previously measured high-resolution H I peaks. Comparison of our B-I colors and B luminosities with star cluster evolution models indicates star-forming ages of a few times 10(8) years and complex masses of 10(6) M-., corresponding to a star formation efficiency of 3% overall in the plume, or about 26% at the H I peaks.
引用
收藏
页码:2331 / 2336
页数:6
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