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首页> 外文期刊>The Astrophysical journal >RESULTS FROM A SURVEY OF GRAVITATIONAL MICROLENSING TOWARD M31
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RESULTS FROM A SURVEY OF GRAVITATIONAL MICROLENSING TOWARD M31

机译:对M31的重力微透镜测量的结果

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We describe the results of a search for microlensing events affecting stars in the outer bulge and inner disk of M31, due both to masses in M31 and the Galaxy. These observations, from 1994 and 1995 on the Vatican Advanced Technology Telescope and KPNO 4 m telescope, are sufficient to rule out masses in the range ~0.003-0.08 solar mass as the primary constituents of the mass of M31 toward this field. Furthermore, we find six candidate events consistent with microlensing as a result of masses of about 1 solar mass, but we suspect that some of these may be cases in which long-period red supergiant variables may be mistaken for microlensing events. Coverage from anticipated data should be helpful in determining whether these sources maintain a constant baseline, and therefore they are best described by microlensing events.
机译:我们描述了由于M31和银河系的质量而影响微透镜事件的结果,这些微透镜事件影响M31的外凸起和内盘中的恒星。从1994年和1995年在梵蒂冈先进技术望远镜和KPNO 4 m望远镜上获得的这些观测资料足以排除太阳光质量在〜0.003-0.08范围内的质量,是该领域M31质量的主要组成部分。此外,由于质量约为1个太阳质量,我们发现了六个与微透镜一致的候选事件,但我们怀疑其中一些可能是长期红色超巨变变量可能被误认为微透镜事件的情况。预期数据的覆盖范围应有助于确定这些源是否保持恒定的基线,因此最好通过微透镜事件对其进行描述。

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