With an equatorial radius of 6,378 km (3,963 miles), Earth is the largest of the four inner, terrestrial (rocky) planets, but it is considerably smaller than the gas giants of the outersolar system. Earth has a single natural satellite, theMoon, which orbits the planet at a mean dista...
So this theory suggests that large planets, the gas giants, uh, they develop from large clumps of mostly gas and some dust in an accretion disk. Outer regions of an accretion disk can be unstable, gravitationally unstable, which is what causes these clumps to form, and in some cases, grow...
Also, the influence of the mixing length to the scale height ratio on the radius of the star is calculated and the coupling between the mixing-length and the mass-loss rate parameters is investigated. Our conclusions are that the uncertainties in mass-loss and mixing-length to scale-height ...
Define Jupiter mass. Jupiter mass synonyms, Jupiter mass pronunciation, Jupiter mass translation, English dictionary definition of Jupiter mass. n. The mass of the planet Jupiter, used as a unit of mass in describing planets orbiting distant stars. Ju′p
We believe solid particles probably made up just one percent of the outer accretion disk.So this theory suggests that large planets, the gas giants, uh, they develop from large clumps of mostly gas and some dust in an accretion disk. Outer regions of an accretion disk can be unstable, grav...
Our stellar parameters and orbital solutions show that all of these stars are evolved intermediate-mass giants. Introduction The thermally stabilized iodine (I2) gas absorption cell is one of the most powerful and widely used tool to obtain precise radial velocity (PRV) measurements of solar-type...
Context. Observational and theoretical studies suggest that planetary systems consisting only of rocky planets are probably the most common in the Universe. Aims: We study the potential habitability of planets formed in high-mass disks without gas giants around solar-type stars. These systems are int...
We report a gas mass distribution with radius, R, of 13+8−5×(R/20.5au)−0.9+0.4−0.313−5+8×(R/20.5au)−0.9−0.3+0.4 g cm−2 in the expected formation zone of gas and ice giants (5–21 au). We find that the mass ratio of total gas to millimetre-...
It is generally believed that red giant mass loss plays some role in the formation of planetary nebulae (PNe), but the connection is not clearly understood. To investigate this issue we have undertaken an extensive search for molecular gas in PNe, which is likely to be remnant material of th...
Nature Astronomythanks Nicholas Rui, Oliver Hall and the other, anonymous, reviewer(s) for their contribution to the peer review of this work. About this article Cite this article Li, Y., Bedding, T.R., Murphy, S.J.et al.Discovery of post-mass-transfer helium-burning red giants using ...