论文标题
在当地小组以外的星系中搜索最亮的星星
Search for the brightest stars in galaxies outside the Local Group
论文作者
论文摘要
本文显示了一种在当地群体以外的星系中寻找明亮的巨星的技术。为了搜索巨大的恒星，我们使用了Daophot和Dolphot包装，使用了哈勃太空望远镜图像的恒星光度法的结果。此类搜索的结果显示在Galaxies DDO68，M94和NGC1672的示例上。在Galaxy DDO68中，LBV恒星改变了其亮度，在M94中，大量恒星可以通过H $α$频段中的过量识别。对于Galaxy NGC1672，我们首次通过TRGB方法测量了距离，这使得在年轻的恒星形成区域中确定最亮恒星（可能是超级巨星）的亮度。到目前为止，我们已经对位于12MPC以下的距离的320个北部天空星系的HST图像进行了出色的光度法。这使我们能够识别53个具有可能超级巨人的星系。计划对这些星系进行进一步的光度和光谱观测，以寻找巨大的恒星。
This paper shows a technique for searching for bright massive stars in galaxies beyond the Local Group. To search for massive stars, we used the results of stellar photometry of the Hubble Space Telescope images using the DAOPHOT and DOLPHOT packages. The results of such searches are shown on the example of the galaxies DDO68, M94 and NGC1672. In the galaxy DDO68 the LBV star changes its brightness, and in M94 massive stars can be identified by the excess in the H$α$ band. For the galaxy NGC1672, we measured the distance for the first time by the TRGB method, which made it possible to determine the luminosities of the brightest stars, likely hypergiants, in the young star formation region. So far we have performed stellar photometry of HST images of 320 northern sky galaxies located at a distance below 12Mpc. This allowed us to identify 53 galaxies with probable hypergiants. Further photometric and spectral observations of these galaxies are planned to search for massive stars.
