Sentences with word «barycentric»
Our results effectively show that a Michelson interferometer coupled to a spectrograph allows precise measurements of barycentric radial velocities even at a modest spectral resolution of R ~ 5100.
arxiv.org
Abstract: We demonstrate the ability to measure precise stellar barycentric radial velocities with the dispersed fixed - delay interferometer technique using the Exoplanet Tracker (ET), an instrument primarily designed for precision differential Doppler velocity measurements using this technique.
The requirements of specialized machines drove a proliferation of timescales customized to each user: Universal time, sidereal time, ephemeris time, barycentric time, and terrestrial time are just a few examples.
If, instead, you would look at barycentric Keplerian elements, you would see them change hundreds of times faster, but most of that would be oscillations at the orbital periods of the outer planets like Jupiter and Saturn.
In addition to precise differential velocities, this survey will also yield precise barycentric radial velocities for many thousands of stars using the data analysis techniques reported here.
Our barycentric radial velocities, derived from observations taken at the KPNO 2.1 meter telescope, differ from... ▽ More We demonstrate the ability to measure precise stellar barycentric radial velocities with the dispersed fixed - delay interferometer technique using the Exoplanet Tracker (ET), an instrument primarily designed for precision differential Doppler velocity measurements using this technique.
Our barycentric radial velocities, derived from observations taken at the KPNO 2.1 meter telescope, differ from those of Nidever et al. by 0.047 km / s (rms) when simultaneous iodine calibration is used, and by 0.120 km / s (rms) without simultaneous iodine calibration.
Don't bring up the barycentric viewpoint unless you're in the company of aspiring celestial mechanicists — or if you (not you, but you know who I mean) want to obfuscate things.
* In the barycentric frame, the dominant perturbation is that of the Sun not being in the origin: 1/200 of the Solar attraction, i.e., over 600 times as strong.
The AMP event or barycentric anomaly being the major differentiators from other planetary theories.