论文标题
宇宙流4：光学和红外Tully-Fisher关系的校准
Cosmicflows 4: The Calibration of Optical and Infrared Tully-Fisher Relations
论文作者
论文摘要
这项研究是Cosmicflows-4项目的一部分，其目的是测量当地宇宙中约10,000多个螺旋星系的距离，高达约15,000 km/s。新的HI线宽信息主要来自Arecibo Legacy Fast Alfa调查。样品星系的光度法已在光学（SDSS u，g，r，i，z）和红外（明智的W1和W2）带中进行。已经使用公民科学家合作访问的在线图形界面确定了倾斜度。基于螺旋的旋转速率与其绝对发光度（称为Tully-Fisher关系（TFR））之间的相关性测量星系距离。在这项研究中，我们使用位于20个星系簇中的〜600个螺旋形的子样本介绍了TFR的校准。探索了颜色，表面亮度和相对HI含量等可观察到的相关性，以减少TFR的散射，以获得更准确的距离。从校准器簇的距离和速度的哈勃常数的初步测定为H0 = 76.0+-1.1（stat。）+-2.3（sys。）km/s/s/mpc。
This study is a part of the Cosmicflows-4 project with the aim of measuring the distances of more than ~10,000 spiral galaxies in the local universe up to ~15,000 km/s. New HI linewidth information has come primarily from the Arecibo Legacy Fast ALFA Survey. Photometry of our sample galaxies has been carried out in optical (SDSS u, g, r, i, z) and infrared (WISE W1 and W2) bands. Inclinations have been determined using an online graphical interface accessible to a collaboration of citizen scientists. Galaxy distances are measured based on the correlation between the rotation rate of spirals and their absolute luminosity, known as the Tully-Fisher Relation (TFR). In this study, we present the calibration of the TFR using a subsample of ~600 spirals located in 20 galaxy clusters. Correlations among such observables as color, surface brightness, and relative HI content are explored in an attempt to reduce the scatter about the TFR with the goal of obtaining more accurate distances. A preliminary determination of the Hubble constant from the distances and velocities of the calibrator clusters is H0=76.0+-1.1(stat.)+-2.3(sys.) km/s/Mpc.
