Sentences with phrase «dynamical masses»

If not understood, the biases in radial velocity amplitudes will represent an intrinsic limitation for estimating dynamical masses from SB2 + interferometry or SB2 + Gaia.

Dynamical masses, absolute radii and 3D orbits of the triply eclipsing star HD 181068 from Kepler photometry

This orbital information depends on the strength of the gravitational field and can hence be used to deduce the mass of the cluster — astronomers call such estimates dynamical masses.

The kinematic properties of the nebula suggest that it is a rotating structure, which would imply a lower limit to the dynamical mass of ~ 3 x 1e11 Msun.

By modeling the emission, they estimate the speed of the gas's rotation, allowing them to obtain a dynamical mass for the galaxy.

Not exact matches

But the spheroid is much more concentrated near the centre of the Galaxy, and the dynamical models require much more mass in the spheroid than we can see in the form of stars.

Dynamical models of the interaction between the planet and the belt indicate that the planet's mass is at most three times that of Jupiter; a higher mass would lead to gravitational disruption of the belt, matching predictions of its location.

Dynamical disc modelling leads to rough mass estimates of the putative Zodi belts around the aCen stars, viz. < ~ 4e - 6 MMoon of 4 to 1000 mu size grains, distributed according to n a ^ -3.5.

They conclude that the mass of Jupiter's dynamical atmosphere is about one per cent of Jupiter's total mass.

The clear correlation between the net displacement of ocean water mass to land and the lower sea level during the last La Nina is a dynamical connection, showing far more than just «trend».

In isothermal equilibrium, the system is in perfect force balance, there is no net dynamical transport of mass up or down, no net change whatsoever of gravitational potential energy — but heat conduction still functions to maintain equal temperature and restore equilibrium after a perturbation.

It's possible that it has snowed less in this part of Antarctica in recent years — that would also cause the glaciers to thin and lose mass, but it's a not a signal of dynamical imbalance.»

I hope nobody would defend the idea that the system doesn't obey the dynamical equations transcribing energy, momentum and mass conservation (e.g Navier Stokes & Co).

«Our climate simulations, using a simplified three - dimensional climate model to solve the fundamental equations for conservation of water, atmospheric mass, energy, momentum and the ideal gas law, but stripped to basic radiative, convective and dynamical processes, finds upturns in climate sensitivity at the same forcings as found with a more complex global climate model»

The only internal dynamical effect comes about from the small deviation of geodesic lines for neighboring mass elements, which is what the tidal forces really are.

Our climate simulations, using a simplified three - dimensional climate model to solve the fundamental equations for conservation of water, atmospheric mass, energy, momentum and the ideal gas law, but stripped to basic radiative, convective and dynamical processes, finds upturns in climate sensitivity at the same forcings as found with a more complex global climate model [66].

It is suggested that dynamical instability, by triggering secular cycles of mass loss, is primarily what differentiates LBVs from the purely radiatively unstable Wolf - Rayet stars.

A simple time - dependent theory of moving stellar envelopes is developed in order to treat deep hydrodynamical disturbances caused by surface mass loss and to test the moving envelopes for dynamical instability.

Such dynamical ice loss is sufficient to explain most of the Antarctic net mass loss and approximately half of the Greenland net mass loss.

Estimates of the decadal variability in ice sheet mass loss (11) suggest the impact on acceleration estimates is ∼ 0.014 mm / y2 for a 25 - y time series, in the absence of rapid dynamical changes in the ice sheets.