搜索结果: 1-15 共查到“知识库 太阳系形成与演化”相关记录17条 . 查询时间(1.841 秒)
本文提出了行星系统中内行星的生星机制。这种机制由两部分内容所组成：一是窿洞的产生；二是发射力使行星胎脱离原太阳进入公转轨道而成为行星。
本文提出了新的月球起源与演化的假说。这一假说由行星胎俘获期、两阶段共成和发射分离三个部分构成。它解释了月海和月背环形山的成因，以及其它月球未解之谜。
Hipparcos Variable Star Detection and Classification Efficiency
Variable Star Detection Classification Efficiency
2011/10/11
A complete periodic star extraction and classification scheme is set up and tested with the Hipparcos catalogue. The efficiency of each step is derived by comparing the results with prior knowledge co...
Accretion in the detached post-common-envelope binary LTT 560
binaries: close – Stars: late-type – white dwarfs – Stars: individual: LTT 560 – cataclysmic variables
2011/10/11
In a previous study, we found that the detached post-common-envelope binary LTT 560 displays an Halpha emission line consisting of two anti-phased components. While one of them was clearly caused by s...
Monte Carlo simulations of neutron-rich matter of relevance to the inner neutron-star crust are performed for a system of A=5,000 nucleons. To determine the proton fraction in the inner crust, numeric...
Changes in Sea-Level Pressure over South Korea Associated with High-Speed Solar Wind Events
solar-terrestrial weather sea-level pressure solar wind
2011/9/30
We explore a possibility that the daily sea-level pressure (SLP) over South Korea responds to the high-speed solar wind event. This is of interest in two aspects: First, if there is a statistical asso...
Coherent Cherenkov Radiation from Cosmic-Ray-Induced Air Showers
Coherent Cherenkov Radiation Cosmic-Ray-Induced
2011/9/27
Very energetic cosmic rays entering the atmosphere of the Earth will create a plasma cloud moving with almost the speed of light. The magnetic field of the Earth induces an electric current in this cl...
From Bipolar to Elliptical: Simulating the Morphological Evolution of Planetary Nebulae
From Bipolar Elliptical: Simulating Morphological Evolution Planetary Nebulae
2011/9/27
The majority of Proto-planetary nebulae (PPN) are observed to have bipolar morphologies. The majority of mature PN are observed to have elliptical shapes. In this paper we address the evolution of PPN...
Optical and Near-IR long-term monitoring of NGC3783 and MR2251-178: evidence for variable near-IR emission from thin accretion discs
Seyfert galaxies:general — Seyfert galaxies:individual(NGC 3783,MR 2251-178)
2011/9/26
We present long term near-IR light curves for two nearby AGN: NGC3783 and MR2251-178. The near-IR data are complemented with optical photometry obtained over the same period of time. The light curves ...
ULIRGS：Origin and Evolution
ULIRGS Origin Evolution
2009/6/12
ULIRGS：Origin and Evolution。
Magellanic clouds planetary nebulae：an updated view on stellar evolution and populations
clouds planetary nebulae opulations stellar evolution
2009/6/11
Magellanic clouds planetary nebulae：an updated view on stellar evolution and populations。
Extra-solar Planetary Systems。
Extrasolar planets：theory and observations。