搜索结果: 46-60 共查到“天体演化学”相关记录66条 . 查询时间(4.082 秒)
类地行星形成演化和内部结构项目通过验收(图)
类地行星 形成演化 内部结构
2013/11/7
2013年11月5日,中国科学院紫金山天文台科技处组织专家组对季江徽研究员承担的江苏省面上基金项目“类地行星形成演化和内部结构”进行结题验收。项目验收委员会由上海天文台廖新浩研究员(验收委员会主任)、南京大学周济林教授(验收委员会副主任)、南京师范大学袁启荣教授、南京天光所窦江培研究员及紫台赵海斌研究员组成。
北京大学地球与空间科学学院高克勤教授
北京大学地球与空间科学学院 高克勤 教授 古脊椎动物学 演化生物学
2013/7/8
中国探月与测空探测网“绕月探测工程科学数据应用与研究”重点项目立项
探测工程;重点项目
2021/11/18
为了深入挖掘绕月探测数据的科学信息、推动我国月球探测的创新性研究,2010年12月,国家863计划“绕月探测工程科学数据应用与研究”重点项目立项,经过近2年的时间,获取了一系列的技术创新和科研成果,为我国的探月工程再添一抹明亮的色彩。
中国科学院云南天文台韩占文研究员(图)
中国科学院云南天文台 研究员 恒星演化 双星演化 特殊恒星天体 演化星族合成 星系 紫外辐射
2012/9/11
大约45.3亿年前,一颗火星大小的天体猛烈撞击了地球,形成了一颗年轻的、熔融的月球。但这两者究竟是迎面相撞,还是擦肩而碰却一直是个未解之谜。
星球物质层次包压论认为,黑洞不是恒星燃料耗尽冷却后自身的引力坍缩而成,而是热星云团中高速旋转的气体物质因离心力的作用向四周扩张膨胀旋转运动,云团被旋转挤压成亮度高的云环盘并在中间形成星云稀少、光线相对黑暗的空洞,称之为黑洞。黑洞的存在不具有普遍性,只是极个别热星云演变生成新星球过程的特殊形式。
"Revealing a Population of Heavily Obscured Active Galactic Nuclei at z=0.5-1 in the Chandra Deep Field-South
Revealing Population Heavily Obscured Active Galactic Nuclei
2011/10/10
We identify a numerically significant population of heavily obscured AGNs at z~0.5-1 in the Chandra Deep Field-South (CDF-S) and Extended Chandra Deep Field-South by selecting 242 X-ray undetected obj...
Photometric SN Ia Candidates from the Three-Year SDSS-II SN Survey Data
Photometric Candidates Three-Year SDSS-II SN Survey Data
2011/10/21
We analyze the three-year SDSS-II Superernova (SN) Survey data and identify a sample of 1070 photometric SN Ia candidates based on their multi-band light curve data. This sample consists of SN candida...
Formation and Evolution of the Dust in Galaxies. III. The Disk of the Milky Way
Galaxies - Dust Galaxies – Spirals Galaxies – Milky Way
2011/10/13
Models of chemical evolution of galaxies including the dust are nowadays required to decipher the high-z universe. In a series of three papers we have tackled the problem and set a modern chemical evo...
The Solar Neighborhood XXVII: Discovery of New Proper Motion Stars with mu > 0.18 "/yr in the Southern Sky with 16.5 > R_59F > 18.0
Solar Neighborhood Discovery Proper Motion Stars Southern Sky
2011/10/13
Here we present 1584 new southern proper motion systems with mu > 0.18 "/yr and 16.5 > R_59F > 18.0. This search complements the six previous SuperCOSMOS-RECONS (SCR) proper motion searches of the sou...
An AMR Study of the Common Envelope Phase of Binary Evolution
AMR Study Common Envelope Phase Binary Evolution
2011/10/12
The hydrodynamic evolution of the common envelope phase of a low mass binary composed of a 1.05 Msun red giant and a 0.6 Msun companion has been followed for five orbits of the system using a high res...
Modeling blue stragglers in young clusters
stars: blue stragglers— stars: binaries: close
2011/10/12
In this paper, a grid of the binary evolution models are calculated for the study of blue straggler (BS) population in intermediate age ($\log Age$=7.85-8.95) star clusters. The BS formation via mass ...
Delta Scorpii 2011 periastron: worldwide observational campaign and preliminary photometric analysis
Delta Scorpii Diff erential Photometry
2011/9/28
Delta Scorpii is a double giant Be star in the forefront of the Scorpio, well visible to the naked eye, being normally of magnitude 2.3. In the year 2000 its luminosity rose up suddenly to the magnitu...
Radio Properties of Rotating Radio Transients I: searches for periodicities and randomness in pulse arrival times
stars:neutron – pulsars: general – Galaxy: stellar content
2011/9/28
We have analysed the long- and short-term time dependence of the pulse arrival times and the pulse detection rates for eight Rotating Radio Transient (RRAT) sources from the Parkes Multi-beam Pulsar S...