Sentences with phrase «subgiant in»
Lambda Serpentis is a main sequence dwarf star of spectral and luminosity type G0 V, but it is listed as a possible subgiant in some catalogues.
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Dr. Baliunas has manuscripts in preparation (no coauthors) in the area of Ca II chromospheric surface magnetic activity and variability in F - G dwarfs and subgiants in M67.
Not exact matches
Evolutionary analysis of the host star suggests that KELT - 10b is unlikely to survive beyond the current subgiant phase, due to a concomitant in - spiral of the planet over the next $ \ sim $ 1 Gyr.
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.
Since Beta Hydri has become a subgiant, it is possible that any planet that held Earth - like conditions earlier in the system's past has now become too hot to support Earth - type life, but that a colder Mars - type planet has become more Earth - like.
Since Delta Eridani has become a subgiant, it is possible that any planet that held Earth - like conditions earlier in the system's past has now become too hot to support Earth - type life, but that a colder Mars - type planet has become more Earth - like.
In March 2005, astronomers seeking ancient stars announced the discovery of HE 1327 - 2326, a subgiant or main - sequence dwarf star with extremely low metallicity — an iron abundance -LRB-[Fe / H] = -5.4 + / - 0.2) that is only about 1/250, 000 th of Sol's and a factor of two lower than that of giant star HE 0107 - 5240 (which is discussed in detail belowIn March 2005, astronomers seeking ancient stars announced the discovery of HE 1327 - 2326, a subgiant or main - sequence dwarf star with extremely low metallicity — an iron abundance -LRB-[Fe / H] = -5.4 + / - 0.2) that is only about 1/250, 000 th of Sol's and a factor of two lower than that of giant star HE 0107 - 5240 (which is discussed in detail belowin detail below).
Because K2 - 39b has a short orbital period, its existence makes it seem unlikely that tidal destruction is wholly responsible for the differences in planet populations around subgiant and main - sequence stars.
A comparison with stellar properties in the planet - candidate catalog by Batalha et al. shows that radii for subgiants and giants obtained from spectroscopic follow - up are systematically too low by up to a factor of 1.5, while the properties for unevolved stars are in good agreement.
Abstract: Photometric observations made by the NASA Kepler Mission have led to a dramatic increase in the number of main - sequence and subgiant stars with detected solar - like oscillations.
Marginal cases are allowed; for example, a star may be either a supergiant or a bright giant, or may be in between the subgiant and main - sequence classifications.
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.