天文学进展Issue(1)：40-54,15.DOI:10.3969/j.issn.1000-8349.2014.01.03
M31中的恒星观测与研究进展
Stellar Observation and Research Progress in M31
摘要
Abstract
Andromeda, also known as M31, is the largest spiral galaxy in the Local Group which locates in the Andromeda constellation. The distance from M31 to the Milky Way is 770 kpc, i.e. about 2.5 million light years. The integrated apparent magnitude of M31 is 3.44 mag. It is the farthest deep-sky object which can be seen by eye. The number of stars in M31 is about 1012. <br> We give a brief review of progress in observing in M31, including photometric and spectroscopic observations in the past few decades. Then we introduce the founding of M31 observation coordinate system and the usage of this system in M31 star observations. Afterwards, we conclude how to use the radio velocity method and the color index method to separate the M31 stars from the Milky Way foreground contaminations. We then summarize the progress in recent years on the observation of M31 stars, we also analyze the results of UBVR photometric surveys, spectral observation with KECK telescope, the Local Group Galaxies Survey pro ject, the observation of M31 diffuse interstellar band and the fitting of M31 halo’s surface brightness function. <br> Finally, we discuss what LAMOST can do for M31 studies in the future, for instance, identify the supergiant stars in M31 disk and analyze the radial gradient of the element abundance in M31 disk. We also proposed some possible scientific targets for future work.关键词
M31/测光/光谱/恒星Key words
M31/photometry/spectroscopy/stellar分类
天文与地球科学引用本文复制引用
李承东,赵刚..M31中的恒星观测与研究进展[J].天文学进展,2014,(1):40-54,15.基金项目
国家自然科学基金(11233004，11390371) （11233004，11390371）
