Sentences with phrase «radial velocity amplitudes»
Abstract: Our long term aim is to derive model - independent stellar masses and distances for long period massive binaries by combining apparent astrometric orbit with double - lined radial velocity amplitudes (SB2).
https://arxiv.org/
Finally, we found that the use of existing SB2 radial velocity amplitudes can lead to unrealistic masses and distances.
If not understood, the biases in radial velocity amplitudes will represent an intrinsic limitation for estimating dynamical masses from SB2 + interferometry or SB2 + Gaia.
We combine this dataset with distance estimates... ▽ More Our long term aim is to derive model - independent stellar masses and distances for long period massive binaries by combining apparent astrometric orbit with double - lined radial velocity amplitudes (SB2).
Not exact matches
«These data recover the well - known solar 5 - minute oscillation at a peak of 3 mHz (5.5 min) from the disk - averaged light with a radial - velocity amplitude of only 47 cm / s, an incredibly small velocity from a stellar point of view», says Prof. Strassmeier, PEPSI principal investigator and director of the Cosmic Magnetic Field branch at the Leibniz Institute for Astrophysics Potsdam (AIP).
From these readings, the radial velocity of the parent star relative to the Earth is varying with an amplitude of about 2 metres (6.6 ft) per second.