论文标题
到达多拉多银河系的距离
Distance to the Dorado galaxy group
论文作者
论文摘要
基于Hubble空间望远镜的档案图像，Dorado组最亮星系的恒星光度法：NGC 1433，NGC 1533，NGC 1566和NGC 1672。在获得的CM图上发现了红色巨人，并使用TRGB方法测量了与星系的距离。获得的值：$ 14.2 \ pm 1.2 $，$ 15.1 \ pm 0.9 $，$ 14.9 \ pm 1.0 $和$ 15.9 \ pm 0.9 $ 〜mpc，表明所有命名的星系均大约位于相同的距离，并形成一个零星的组，平均距离$ d = 15.0 $ MPC。发现在Galaxies NGC 1533和IC 2038之间的氢气中可见蓝色和红色的超级巨头，并在远距离的Galaxy NGC 1533中形成环形结构，距中心3.6 kpc。这些恒星的高金属性（$ z = 0.02 $）表明它们来自NGC 1533天然气。
Based on the archival images of the Hubble Space Telescope, stellar photometry of the brightest galaxies of the Dorado group: NGC 1433, NGC 1533, NGC 1566 and NGC 1672 was carried out. Red giants were found on the obtained CM diagrams and distances to the galaxies were measured using the TRGB method. The obtained values: $14.2\pm 1.2$, $15.1\pm 0.9$, $14.9 \pm 1.0$ and $15.9\pm 0.9$~Mpc, show that all the named galaxies are located approximately at the same distances and form a scattered group with an average distance $D = 15.0$ Mpc. It was found that blue and red supergiants are visible in the hydrogen arm between the galaxies NGC 1533 and IC 2038, and form a ring structure in the lenticular galaxy NGC 1533, at a distance of 3.6 kpc from the center. The high metallicity of these stars ($Z = 0.02$) indicates their origin from NGC 1533 gas.
