【sattamatka sattamatka sattamatka sattamatka】比想象中更大 我国科学家测量银河系半径:几乎是之前两倍
快科技7月12日消息,比想云南大学官网发文称,象中学家系半该校团队直接测量了银河系的更大国科sattamatka sattamatka sattamatka sattamatka半径,约1.9万光年,测量几乎是银河之前估计的两倍。 据了解,径乎此次云南大学中国西南天文研究所连建辉副教授团队利用APOGEE近红外恒星光谱巡天数据,两倍重构了银河系从内到外完整的比想恒星径向密度分布,相关研究成果已发表在国际权威学术期刊《自然·天文学》上。象中学家系半 连建辉介绍称,更大国科sattamatka sattamatka sattamatka sattamatka过去基于指数盘的测量假设,人们发现银河系的银河半光半径(约1万光年)比同质量星系偏小,属致密星系。径乎 最新研究颠覆了这一假设,两倍开拓了银河系整体物理性质测量、比想银河系-河外星系交叉对比研究新的维度,将对银河系相关研究产生重要影响。 尽管银河系是人类的家园,但人类长期以来对银河系的整体结构缺乏清晰认识。原因是太阳系几乎位于银河系的盘平面上,尘埃消光严重影响了对于银河系主要部分(内盘和银心)方向的观测。 随着近几年天文观测技术的进步,特别是大型近红外恒星光谱巡天的开展,为解决这一难题提供了前所未有的机遇。 银河系河外视角想象图 【本文结束】如需转载请务必注明出处:快科技 责任编辑:随心
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