Sentences with phrase «subgiant star»
A subgiant star is a star that is at an intermediate stage of its life cycle. It is bigger and brighter than a regular star like the sun, but not as massive or bright as a giant star. Full definition
6 G. Piscium is a yellow subgiant star with the stellar classification of G8 IV.
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Schlaufman, K. C. & Winn, J. N. Evidence for the tidal destruction of hot Jupiters by subgiant stars.
Beta Hydri is also the closest confirmed subgiant star to Sol and one of the older as well as highly evolved stars of the Sun's spectral class in the Solar neighborhood.
Future monitoring of the transits of this system may enable the detection of period decay and constrain the tidal dissipation rates of subgiant stars.
The primary component in the system is a spectroscopic binary with the stellar classification of B2 IV, matching the spectrum of a blue - white subgiant star.
It appears to be a subgiant star that is evolving off the main sequence, as it begins to fuse the increasing amounts of helium «ash» mixed with hydrogen at its core.
Altair has the New Suspected Variable designation NSV 24910 and is unusually bright for its spectral type and so may be becoming a subgiant star that is beginning to evolve off the main sequence, as it begins to fuse the increasing amounts of helium «ash» mixed with hydrogen at its core.
According to Emeritus Professor Jim Kaler, Beta Hydri entered the main sequence a dwarf star at the cooler end of class F (probably around spectral class F8) but now appears to be a subgiant star that is evolving off the main sequence, as it begins to fuse increasing amounts of helium «ash» mixed with hydrogen at its core.
As a subgiant star subject to pulsations which affect careful measurements of variations in radial velocity caused by the gravitational pull of substellar companions, astronomers would find it very difficult to detect any Earth - type planet around Beta Hydri using present methods.
The great spread in luminosities and colours of giant, supergiant, and subgiant stars is also understood to result from evolutionary events.
As a subgiant star subject to pulsations which affect careful measurements of radial velocity, astronomers would find it very difficult to detect any Earth - type planet arond this star using present methods.
With an orbital period of 4.6 days, it is the shortest - period planet orbiting a subgiant star known to date.