Galaxy Zoo: morphologies derived from visual inspection of galaxies from the Sloan Digital Sky Survey
Galaxy Zoo: morphologies derived from visual inspection of galaxies from the Sloan Digital Sky Survey
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DOI：
10.1111/j.1365-2966.2008.13689.x
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发表时间：
2008-09-21
影响因子：
4.8
通讯作者：
Vandenberg, Jan
中科院分区：
文献类型：
--
作者：
Lintott, Chris J.;Schawinski, Kevin;Vandenberg, Jan
为了理解星系的形成和随后的演化，我们必须首先区分两种主要的大质量系统形态：螺旋星系和早期星系。本文介绍了一个项目，银河动物园，提供视觉形态分类的近百万个星系，从斯隆数字巡天（SDSS）提取。这一成就是通过邀请公众通过互联网对这些星系进行视觉检查和分类而实现的。该项目已获得超过4x10（7）个类似的10（5）参与者作出的个人分类。我们讨论了这个项目的动机和策略，并详细介绍了如何进行分类和处理。我们发现，银河动物园的结果与专业天文学家分类的SDSS星系的子集是一致的，从而表明我们的数据提供了一个强大的形态目录。通过直接目视检查获得形态避免了引入与诸如颜色、浓度或结构参数的形态代理相关的偏差。此外，该目录可用于直接比较SDSS形态与旧数据集。每个形态类的颜色幅度图，我们说明了这些分布是如何不同的推断使用颜色单独作为一个代理形态。
In order to understand the formation and subsequent evolution of galaxies one must first distinguish between the two main morphological classes of massive systems: spirals and early-type systems. This paper introduces a project, Galaxy Zoo, which provides visual morphological classifications for nearly one million galaxies, extracted from the Sloan Digital Sky Survey (SDSS). This achievement was made possible by inviting the general public to visually inspect and classify these galaxies via the internet. The project has obtained more than 4 x 10(7) individual classifications made by similar to 10(5) participants. We discuss the motivation and strategy for this project, and detail how the classifications were performed and processed. We find that Galaxy Zoo results are consistent with those for subsets of SDSS galaxies classified by professional astronomers, thus demonstrating that our data provide a robust morphological catalogue. Obtaining morphologies by direct visual inspection avoids introducing biases associated with proxies for morphology such as colour, concentration or structural parameters. In addition, this catalogue can be used to directly compare SDSS morphologies with older data sets. The colour-magnitude diagrams for each morphological class are shown, and we illustrate how these distributions differ from those inferred using colour alone as a proxy for morphology.