晚型旋涡星系盘的颜色梯度与结构参数的相关关系

发布时间：2018-02-12 06:52

本文关键词： 星系旋涡星系基本参数　出处：《天文学报》2011年01期 　论文类型：期刊论文

【摘要】：从Sloan数字巡天第2批释放的数据(SDSS DR2)中选择了395个在r波段亮于15等的面向晚型旋涡星系作为样本,研究了盘的颜色梯度与结构参数的关系.结果表明:盘的颜色梯度与盘的绝对星等(质量)无关;盘的颜色梯度与盘的尺度有关,越大的盘颜色梯度越陡;盘的颜色梯度与盘的颜色有关,越蓝的盘颜色梯度越陡;盘的颜色梯度与盘的表面亮度有关,越亮的盘颜色梯度越陡,并简单讨论了盘的颜色梯度与各结构参数的相关关系对晚型旋涡星系盘恒星形成历史的约束.
[Abstract]:From the data released in the second batch of the Sloan Digital Survey, 395 latecomer spiral galaxies with r band brightness less than 15 et al were selected as samples. The results show that the color gradient of the disk is independent of the absolute magnitude (mass) of the disk, the color gradient of the disk is related to the scale of the disk, and the larger the color gradient of the disk is, the steeper the color gradient is. The color gradient of the disk is related to the color of the disk. The bluer the color gradient of the disk is, the steeper the color gradient of the disk is related to the surface brightness of the disk. The relationship between the color gradient of the disk and the structural parameters is briefly discussed, and the constraints on the history of disk star formation in the late spiral galaxies are also discussed.
【作者单位】：吉林师范大学物理学院;
【分类号】：P152

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