The ALFALFA-SDSS Galaxy Catalog
The ALFALFA-SDSS Galaxy Catalog
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DOI：
10.3847/1538-3881/abc018
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发表时间：
2020-11
期刊：
影响因子：
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通讯作者：
A. Durbala;R. Finn;Mary Crone Odekon;M. Haynes;R. Koopmann;A. O’Donoghue
中科院分区：
文献类型：
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作者：
A. Durbala;R. Finn;Mary Crone Odekon;M. Haynes;R. Koopmann;A. O’Donoghue
我们提出了一个H i光学目录的基础上100%完整的阿雷西博遗产快速阿雷西博L波段馈源阵列（ALCAFA）的调查，结合数据从斯隆数字巡天（SDSS）的100%的30,000星系。我们的目标是通过提供仔细确定的SDSS对应物的匹配，包括没有SDSS光谱的100，000个星系的匹配，以促进公众使用完整的ALCARFA目录。这些识别可以为使用SDSS光度ID作为参考点与其他调查进行进一步交叉匹配提供基础。我们推导出每个星系的绝对星等和恒星质量，使用光学颜色结合内部红化校正设计的小和中等质量的星系与活跃的星星形成。我们还提供了恒星质量和星星形成率的基础上红外和/或紫外测光的星系检测的宽视场红外巡天探测器和/或星系演化探测器。最后，我们比较了星系人口的ALCANDFA-SDSS样本与其他几个公开可用的星系目录中的人口，并确认ALCANDFA星系通常具有较低的质量和蓝色。
We present a H i optical catalog of ∼30,000 galaxies based on the 100% complete Arecibo Legacy Fast Arecibo L-band Feed Array (ALFALFA) survey combined with data from the Sloan Digital Sky Survey (SDSS). Our goal is to facilitate the public use of the completed ALFALFA catalog by providing carefully determined matches to SDSS counterparts, including matches for ∼10,000 galaxies that do not have SDSS spectra. These identifications can provide a basis for further crossmatching with other surveys using SDSS photometric IDs as a reference point. We derive absolute magnitudes and stellar masses for each galaxy using optical colors combined with an internal reddening correction designed for small- and intermediate-mass galaxies with active star formation. We also provide measures of stellar masses and star formation rates based on infrared and/or ultraviolet photometry for galaxies that are detected by the Wide-field Infrared Survey Explorer and/or the Galaxy Evolution Explorer. Finally, we compare the galaxy population in the ALFALFA-SDSS sample with the populations in several other publicly available galaxy catalogs and confirm that ALFALFA galaxies typically have lower masses and bluer colors.