Circumnuclear star formation in spiral galaxies from HST images: NGC 4314

被引：0
|
作者：
Winge, C
Pastoriza, MG
机构：
[1] AURA Inc, So Operat Ctr, Gemini Observ, La Serena, Chile
[2] Univ Fed Rio Grande Sul, IF, Dept Astron, BR-91501970 Porto Alegre, RS, Brazil
来源：
EXTRAGALACTIC STAR CLUSTERS | 2002年 / 207卷
关键词：
D O I：
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The first results of a study of the circumnuclear star-forming regions in HST broad band images of the nearby galaxy NGC4314 are presented. After modeling the bulge stellar population using ellipse fitting and subtracting the resulting model from the original images, aperture photometry of the individual star-forming regions in the ring was performed. For a total of 75 regions detected 3sigma above the background, we obtained mean colors (f439-f569) = -0.72 +/- 0.27, and (f569-f814) = -0.69 +/- 0.35, with the NW regions being similar to 0.5 mag bluer in both colors than the NE ones, an effect that may be caused by internal reddening.
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页码：708 / 710
页数：3
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