A Catalog of Morphologically Classified Galaxies from the Sloan Digital Sky Survey: North Equatorial Region
A Catalog of Morphologically Classified Galaxies from the Sloan Digital Sky Survey: North Equatorial Region
复制标题
DOI：
10.1086/518962
复制
发表时间：
2007-04
期刊：
影响因子：
--
通讯作者：
M. Fukugita;O. Nakamura;S. Okamura;N. Yasuda;J. Barentine;J. Brinkmann;J. Gunn;M. Harvanek;T. I
中科院分区：
文献类型：
--
作者：
M. Fukugita;O. Nakamura;S. Okamura;N. Yasuda;J. Barentine;J. Brinkmann;J. Gunn;M. Harvanek;T. I
我们提出了一份来自斯隆数字巡天（SDSS）第三次数据发布的北赤道带（230°2）明亮星系的形态分类目录。形态学分类是通过视觉检查图像在g波段进行的。该星表包含2253个星系，经过银河系消光校正后的星等极限为r = 16，这些星系是从2658个天体中选出的，这些天体在光度表中被认为是在相同的星等极限下扩展的。我们的星表中总共有1866个星系有光谱信息。对目录中形态类型和平均颜色的频率进行了简要的统计分析。对图像的目视检查显示，在r≤16的样本中，局部宇宙中相互作用星系的比率约为1.5%。对SDSS生成的光度表进行了验证，特别是对其亮端完整性进行了验证。
We present a catalog of morphologically classified bright galaxies in the north equatorial stripe (230 deg2) derived from the Third Data Release of the Sloan Digital Sky Survey (SDSS). Morphological classification is performed by visual inspection of images in the g band. The catalog contains 2253 galaxies complete to a magnitude limit of r = 16 after Galactic extinction correction, selected from 2658 objects that are judged to be extended in the photometric catalog in the same magnitude limit. A total of 1866 galaxies in our catalog have spectroscopic information. A brief statistical analysis is presented for the frequency of morphological types and mean colors in the catalog. A visual inspection of the images reveals that the rate of interacting galaxies in the local universe is approximately 1.5% in the r ≤ 16 sample. A verification is made for the photometric catalog generated by the SDSS, especially as to its bright-end completeness.