论文标题
Cosmicflows-4：〜10000 Tully-Fisher距离的目录
Cosmicflows-4: The Catalog of ~10000 Tully-Fisher Distances
论文作者
论文摘要
我们使用螺旋星系的光度和旋转速率之间的关系介绍了位于15,000 km/s以内的9792个螺旋星系的距离。样本是主要但不是仅仅是从Arecibo望远镜的苜蓿HI调查过程中检测到的星系中得出的。 \ hi线宽度与光度之间的关系在SDSS u，g，r，i，z频段以及明智的W1和W2频段上进行校准。通过利用次级参数，尤其是颜色指数，我们以前所未有的细节来解决不同波段的测量距离之间的差异。我们提供一个目录，包括减少运动学，光度和倾斜参数。我们还基于预测缺乏红外光度法的螺旋形尘埃衰减的随机森林技术来描述一种机器学习算法。我们确定H0 = 75.1 +-0.2（STAT。）的哈勃恒定值，潜在的系统学高达 +-3 km/s/mpc。
We present the distances of 9792 spiral galaxies lying within 15,000 km/s using the relation between luminosity and rotation rate of spiral galaxies. The sample is dominantly, but not exclusively, drawn from galaxies detected in the course of the ALFALFA HI survey with the Arecibo Telescope. Relations between \hi line widths and luminosity are calibrated at SDSS u, g, r, i, z bands and WISE W1 and W2 bands. By exploiting secondary parameters, particularly color indices, we address discrepancies between measured distances at different wave bands with unprecedented detail. We provide a catalog that includes reduced kinematic, photometric, and inclination parameters. We also describe a machine learning algorithm, based on the random forest technique that predicts the dust attenuation in spirals lacking infrared photometry. We determine a Hubble Constant value of H0 = 75.1+-0.2 (stat.), with potential systematics up to +-3 km/s/Mpc.
