منابع مشابه
American Astronomical Society – Division on Dynamical Astronomy
Currently, there are more than 100 confirmed multiple-planet systems. Moreover, a recent study by Kepler has identified 361 multiple-planet candidate systems. Investigating these systems would give us an important clue in understanding formation and evolution of planetary systems. In such multiple-planet systems, secular interactions among planets could play a significant role in determining th...
متن کاملAmerican Astronomical Society Division on Dynamical Astronomy
[1.01] Asteroids: Radar Observations and Dynamics S. J. Ostro (JPL/Caltech) Radar delay-Doppler measurements are powerful for refining asteroid orbits because they have extremely fine fractional precision and are orthogonal to optical angle astrometry. Radar detection of a newly discovered near-Earth asteroid (NEA) secures its orbit and can add centuries to the interval over which its close Ear...
متن کاملAmerican Astronomical Society • Provided by the NASA Astrophysics Data System
Two interacting galaxies and four central galaxies in cooling flow clusters were observed with the Hubble Space Telescope to look for young compact massive star clusters. The two interacting galaxies, NGC 3597 and NGC 6052, show clear evidence for resolved bright blue clusters that are likely to be comparable in mass to Galactic globulars based on their colors and brightnesses. In NGC 3597, the...
متن کاملAn Object - Oriented Approach to Astronomical DatabasesR
The rate at which we can acquire astronomical data out-strips our ability to manipulate and interpret it using standard techniques. Future digital astronomical surveys will enter the terabyte regime. In addition, the actual data themselves will be complex, comprising images and spectra, as well as the traditional measured attributes. We describe here an implementation of a prototype object-orie...
متن کاملAstronomical demonstration of an optical vortex coronagraph.
Using an optical vortex coronagraph and simple adaptive optics techniques, we have made the first convincing demonstration of an optical vortex coronagraph that is coupled to a star gazing telescope. We suppressed by 97% the primary star of a resolvable binary system, Cor Caroli. The stars had an angular separation of 1.9lambda/D at our imaging camera. The secondary star suffered no suppression...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1877
ISSN: 0036-8733
DOI: 10.1038/scientificamerican01201877-878bsupp