Colour asymmetry between galaxies with clockwise and counterclockwise handedness
Colour asymmetry between galaxies with clockwise and counterclockwise handedness
复制标题
顺时针和逆时针旋向星系之间的颜色不对称
DOI：
10.1007/s10509-017-3013-3
复制
发表时间：
2016
影响因子：
1.9
通讯作者：
L. Shamir
中科院分区：
文献类型：
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作者：
L. Shamir
最近的研究表明，顺时针方向的SDSS星系与逆时针方向的星系在光度学上是不同的。这项研究的目的是确定顺时针利手星系的颜色与逆时针利手星系的颜色可能存在的差异。一个包含162,514个SDSS星系的数据集被分为顺时针和逆时针两个星系，并将顺时针惯用手的螺旋星系的颜色与逆时针惯用手的螺旋星系的颜色进行了比较。结果表明，SDSS中顺时针方向星系的I-R颜色明显高于逆时针方向的SDSS星系。右行30°和60°之间的色差最大，而180°到210°的RA范围内的色差要小得多。同样，比较顺时针和逆时针星系的其他光度测量结果，显示出统计上的显著差异，表明SDSS管道对星系的惯用手很敏感。
Recent studies have shown that SDSS galaxies with clockwise patterns are photometrically different from galaxies with anti-clockwise patterns. The purpose of this study is to identify possible differences between the colour of galaxies with clockwise handedness and the colour of galaxies with anti-clockwise handedness. A dataset of 162,514 SDSS galaxies was separated into clockwise and counterclockwise galaxies, and the colours of spiral galaxies with clockwise handedness were compared to the colour of spiral galaxies with anti-clockwise handedness. The results show that the i-r colour in clockwise galaxies in SDSS is significantly higher compared to anti-clockwise SDSS galaxies. The colour difference is strongest between the right ascension of 30° and 60°, while the RA range of 180° to 210° shows a much smaller difference. Similarly, comparing other photometric measurements in clockwise and anti-clockwise galaxies exhibit statistically significant difference, showing the SDSS pipeline is sensitive to the handedness of the galaxy.