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Rebirth of X-ray Emission from the Born-Again Planetary Nebula A 30
Rebirth X-ray Emission Born-Again Planetary Nebula
2012/2/23
The planetary nebula (PN) A 30 is believed to have undergone a very late thermal pulse resulting in the ejection of knots of hydrogen-poor material. Using multi-epoch HST images we have detected the a...
Considerations on the accretion of Uranus and Neptune by mutual collisions of planetary embryos in the vicinity of Jupiter and Saturn
planetary systems – planets and satellites: formation – planets and satellites: individual: Uranus, Neptune – protoplanetary disks
2011/10/8
Modeling the formation of Uranus and Neptune is a long-lasting problem in planetary science. Due to the gas-drag, collisional damping, and resonant shepherding, the planetary embryos repel the planete...
A 1.4 GHZ and 14.7 GHZ analysis of density gradients in galactic planetary nebulae
A 1.4 GHZ 14.7 GHZ density gradients galactic planetary nebulae
2009/7/9
A 1.4 GHZ and 14.7 GHZ analysis of density gradients in galactic planetary nebulae。
Three-Dimensional Photoionization Modeling of the Planetary Nebula NGC 6369
Photoionization Modeling Planetary Nebula NGC 6369
2009/6/15
Three-Dimensional Photoionization Modeling of the Planetary Nebula NGC 6369。
Infrared imaging and optical imaging and spectroscopy of (mostly) type I Planetary Nebulae. I.
Infrared imaging optical imaging Planetary Nebulae
2009/6/9
Infrared imaging and optical imaging and spectroscopy of (mostly) type I Planetary Nebulae. I. 。
Collisional Planetary Rings：The Role of the Width and the Optical Depth
Collisional Planetary Rings Width Optical Depth
2009/6/5
Collisional Planetary Rings：The Role of the Width and the Optical Depth。
Planetary Danger Zones（图）
Planetary Danger Zones
2007/4/25
Apr 22, 2007，Scientists have developed the first maps of planetary ’danger zones’, where powerful winds and radiation from hot stars can strip neighboring stars of their planet-forming materials. The ...