Results 41 to 50 of about 2,088,463 (342)
Confirmation of the radial velocity super-Earth K2-18c with HARPS and CARMENES [PDF]
Astronomy & Astrophysics, 2018 In an earlier campaign to characterize the mass of the transiting temperate super-Earth K2-18b with HARPS, a second, non-transiting planet was posited to exist in the system at ~9 days.
R. Cloutier +15 more
semanticscholar +1 more source
Imaging radial velocity planets with SPHERE [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 We present observations with the planet finder SPHERE of a selected sample of the most promising radial velocity (RV) companions for high-contrast imaging. Using a Monte Carlo simulation to explore all the possible inclinations of the orbit of wide RV companions, we identified the systems with companions that could potentially be detected with SPHERE ...
T. Schmidt +40 more
openaire +9 more sources
Quantifying the Bayesian Evidence for a Planet in Radial Velocity Data [PDF]
Astronomical Journal, 2018 We present results from a data challenge posed to the radial velocity (RV) community: namely, to quantify the Bayesian “evidence” for n = {0, 1, 2, 3} planets in a set of synthetically generated RV data sets containing a range of planet signals ...
B. Nelson +8 more
semanticscholar +1 more source
Сучасні інформаційні системи, 2019 The purpose of the article. The article estimates the possible values of the components of the mean-square error of measuring the radial velocity of the target which appear as a result of fluctuations of the phase of the radio signal outside the radar ...
Oleksandr Kuznietsov +4 more
doaj +1 more source
Measurements of the Reynolds stress in the turbulent premixed flame
Nihon Kikai Gakkai ronbunshu, 2021 It has been shown in our previous study that the bi-modal distribution is seen in the radial component of the gas velocity obtained in the turbulent flame brush, implying that the shear component of the Reynolds stress conditioned on the unburnt mixture ...
Nobuhiro MAKITA +3 more
doaj +1 more source
Radial Velocities with Gaia [PDF]
Proceedings of the International Astronomical Union, 2004 Gaia is a mission to map the positions and determine the velocities of 1 billion stars in the Galaxy, in order to determine how it was formed and how it has evolved. Spectroscopy provides one component of the space velocities for 200 million objects, and, in addition, astrophysical information such as temperature and metallicity for the brighter 40 ...
David Katz +4 more
openaire +2 more sources
pyaneti: a fast and powerful software suite for multiplanet radial velocity and transit fitting [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Transiting exoplanet parameter estimation from time-series photometry and Doppler spectroscopy is fundamental to study planets' internal structures and compositions. Here we present the code pyaneti, a powerful and user-friendly software suite to perform
O. Barragán +3 more
semanticscholar +1 more source
GAIA SPECTROSCOPY AND RADIAL VELOCITIES [PDF]
EAS Publications Series, 2002 proceedings of Les Houches 2001 summer school "GAIA, an European Space Project", published by Editions De Physique, 14 ...
openaire +3 more sources
Spectrum radial velocity analyser (SERVAL). High-precision radial velocities and two alternative spectral indicators [PDF]
, 2017 Context: The CARMENES survey is a high-precision radial velocity (RV) programme that aims to detect Earth-like planets orbiting low-mass stars. Aims: We develop least-squares fitting algorithms to derive the RVs and additional spectral diagnostics ...
M. Zechmeister +20 more
semanticscholar +1 more source
Journal of Fluid Science and Technology, 2014 In this study, the Schmidt number dependence of the scalar statistics and velocity-scalar joint statistics is investigated experimentally in a liquid axisymmetric jet.
Toshiki TAKEICHI +5 more
doaj +1 more source