Sentences with phrase «mass subgiants»
Our stellar sample ranges from M dwarfs with masses as low as 0.2 Msun to intermediate - mass subgiants with masses as high as 1.9 Msun.
https://arxiv.org/
Retired A stars and their companions: exoplanets orbiting three intermediate - mass subgiants.
Not exact matches
According to Professor Jim Kaler at the University of Illinois» Department of Astronomy, Rana started life as a main sequence F8 dwarf (somewhat hotter and brighter than Sol with slightly greater mass) around 7.5 billion years ago, but core hydrogen fusion has ceased causing the star to expand and cool as an active subgiant before becoming much brighter and larger «as a true giant star» through core helium fusion.
Asteroseismic analysis provides robust values for the mass and radius of HD 179070, 1.34 -LCB- \ pm -RCB- 0.06 M -LCB- \ circ -RCB- and 1.86 -LCB- \ pm -RCB- 0.04 R -LCB- \ circ -RCB- respectively, as well as yielding an age of 2.84 -LCB- \ pm -RCB- 0.34 Gyr for this F5 subgiant.