NASA`s X-ray Eye on the Universe
... times Sun’s mass • SMBH size ~ our solar system (15 lt mins) • SMBH grows as material falls in ...
... times Sun’s mass • SMBH size ~ our solar system (15 lt mins) • SMBH grows as material falls in ...
Observations of Water and other molecules in Protoplanetary Disk
... Small scales at large distances make resolution of planet-forming regions difficult. The bulk of the disk mass is H2, which is difficult to detect. ...
... Small scales at large distances make resolution of planet-forming regions difficult. The bulk of the disk mass is H2, which is difficult to detect. ...
The formation of stars and planets
... – Derived mass: 0.1...170 M: large! • Most of accelerated mass must have been swept up from the cloud core, rather than originating in mass ejected from the star ...
... – Derived mass: 0.1...170 M: large! • Most of accelerated mass must have been swept up from the cloud core, rather than originating in mass ejected from the star ...
Interferometric Doppler Imaging of Chemically Peculiar stars
... All the F stars can be resolved at 1 μm with baselines ≥ 100 m F stars are in the “sweet spot” for angular diameter and hence age measurement: they are bright, near to us, their evolutionary tracks are reliable, and they are still above ZAMS. ...
... All the F stars can be resolved at 1 μm with baselines ≥ 100 m F stars are in the “sweet spot” for angular diameter and hence age measurement: they are bright, near to us, their evolutionary tracks are reliable, and they are still above ZAMS. ...
Accretion models
... The subsequent evolution of the star-disk system will be controlled by the rate at which J is transported in the disk (mechanisms not well known). ...
... The subsequent evolution of the star-disk system will be controlled by the rate at which J is transported in the disk (mechanisms not well known). ...
21. Solar System Formation
... For this to happen, the ‘freefall’ time, tff, must be less than the ‘sound-crossing’ time, tsc. There is a minimum size (and mass) for clouds which can collapse. ...
... For this to happen, the ‘freefall’ time, tff, must be less than the ‘sound-crossing’ time, tsc. There is a minimum size (and mass) for clouds which can collapse. ...
