【3 patti aaa】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3 patti aaa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3 patti aaa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
-
Palestinians in Nablus send food aid to Jenin四部门联合印发《关于加强商务和金融协同 更大力度支持跨境贸易和投资高质量发展的意见》Interview: Key CPC session a milestone for China's future, says Uzbek scholarEconomic Watch: Chinese economy gathers steam amid targeted policy mixAcross China: Historic buildings revitalized with new business, tourism functions特朗普竞选集会现场出现枪击事件,美媒称特朗普被子弹擦伤White Tibetan antelope cub rescued by ranger in Xizang冬病夏治主要适用于哪些疾病Shanghai's Olympic athletes feted at Disney Resort(1)特朗普美国宾夕法尼亚州竞选集会现场响起枪声
相关内容
- ·中非合作论坛北京峰会开幕
- ·韩国七旬老人就业率首次突破30%,创历史新高
- ·拜登竞选团队宣布暂停接下来的所有外出活动
- ·China Focus: China gears up for critical flood crest season
- ·Xi demands all
- ·中国市场将为几内亚比绍带来巨大机遇——访几内亚比绍进出口协会主席贾曼卡
- ·“中国游”持续走热 吸引力如何持续?
- ·Why Xi's works a key to decoding modern China and its global vision
- ·Over 300 cultural relic sites newly found in China's Xizang
- ·Sunset view in southern Pakistan's Hyderabad
- ·China expands visa
- ·观察中国、体验中国、融入中国 他们在异国他乡追逐梦想
- ·Cambodia inaugurates 37.5
- ·国防部:第十一届北京香山论坛将于9月举行
- ·Beautiful scenery at Bosten Lake
- ·Summer retreat in Warsaw, Poland
最新内容
- ·Ancient Great Wall amidst sea of clouds
- ·China sees continuous decline in hepatitis B incidence rate
- ·People conduct clean up work at UN
- ·Palestinian death toll in Gaza rises to 38,664: health authorities
- ·Bridge Fire in Southern California explodes over 10 times in size
- ·People cool off at St. Paul's Bay in Qawra, Malta
- ·市场监管总局:做好汛期食品安全工作,严厉打击生产经营腐败变质、污秽不洁等不合格食品等违法违规行为
- ·特朗普美国宾夕法尼亚州竞选集会现场响起枪声
- ·Air quality in Zhejiang province witnesses steady improvement
- ·200 million Chinese women benefit from cervical, breast cancer screenings
推荐内容
热点内容
- ·Harris, Trump face off for 1st time in 2024 U.S. presidential debate
- ·Mist surrounds Jinshanling, clouds surface ancient Great Wall
- ·200 million Chinese women benefit from cervical, breast cancer screenings
- ·拜登竞选团队宣布暂停接下来的所有外出活动
- ·Yuping Dong Autonomous County of SW China’s Guizhou: a train passing through early autumn
- ·Lotus flowers reflect lake
- ·Conference to boost global basic science exchange opens in Beijing
- ·外媒:特朗普竞选集会现场发生枪击事件,古特雷斯“明确谴责”
- ·60FlyOverChina
- ·15th Jiayuguan International Triathlon