Astronomy magazine is full of stellar adventuresDan Kincaid The Arizona Republic
The Black Hole Mass of NGC 4151: Comparison of Reverberation Mapping and Stellar Dynamical MeasurementsBased on observations with the NASA/ESA Hubble Space Telescope obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy (AURA)...
Stellar activity and the period gap in cataclysmic variables The evolution of a cataclysmic binary is computed under the assumption of angular momentum loss due primarily to a magnetic wind from the secondary star, i... HC Spruit,H Ritter - 《Astronomy & Astrophysics》 被引量: 214发表: 1983年...
However, telescopic timings of stellar occultations by the Moon provide information about the Earth's rotation going back to the 17th century. An occultation is when the Moon, as seen from the Earth, passes in front of a star. This chart, produced using data from the IERS, shows the length...
A hot Jupiter in the making The scientists first used the NN-EXPLORE Exoplanet and Stellar Speckle Imager (NESSI) to remove "twinkling" patterns caused by Earth's atmosphere, as well as reduce noise coming from other sources of light that could pollute the signal from the star TIC 241249530...
Stellar remnants such aswhite dwarfsandneutron starsare also thought to contain high amounts of dark matter, and so are the so-calledbrown dwarfs, failed stars that didn't accumulate enough material to kick-start nuclear fusion in their cores. ...
As I have noted repeatedly on this thread - sub-stellar bodies massive enough to be spheroidal that are not Brown Dwarfs - are anatural setor class of objects for geophysical investigation in planetary investigations. The passage above illustrates this point. ...
in the Solar System and all exoplanets discovered to date. The massive enough to be self-gravitate into a spheroid element of the IAU definition is geophysical in nature and is pointless to include if the IAU will not account for the dynamical circumstances of all spheroidal sub-stellar bodies...
What advancements are being made to improve distance measurement in astronomy? Advancements in technology, such as more powerful telescopes and sophisticated space observatories, are enhancing astronomers' ability to measure stellar distances. Techniques like interferometry and the use of standard candles, ...
can become part of comets and asteroids and eventually new planetary systems when the icy material is transported inward to the planet-forming disk as the protostellar system evolves," Ewine van Dishoeck of Leiden University, one of the coordinators of the science program, said in a NASA ...