Results 51 to 60 of about 2,088,463 (342)
AESTRA: Deep Learning for Precise Radial Velocity Estimation in the Presence of Stellar Activity
The Astronomical Journal, 2023 Stellar activity interferes with precise radial velocity measurements and limits our ability to detect and characterize planets, in particular Earth-like planets.
Yan Liang +2 more
doaj +1 more source
Radial velocity follow-up of GJ1132 with HARPS [PDF]
Astronomy & Astrophysics, 2018 The source GJ1132 is a nearby red dwarf known to host a transiting Earth-size planet. After its initial detection, we pursued an intense follow-up with the HARPS velocimeter. We now confirm the detection of GJ1132b with radial velocities alone.
X. Bonfils +21 more
semanticscholar +1 more source
Xibei Gongye Daxue Xuebao, 2020 The axial width of pump chamber has a great influence on the flow characteristics of the pump chamber in the centrifugal pump. A single-stage single-suction double volute centrifugal pump with a semi-open impeller was selected as the object.
doaj +1 more source
Normal Motor and Sensory Nerve Conduction Velocity of Radial Nerve in Young Adult Medical Students [PDF]
Journal of Clinical and Diagnostic Research, 2016 Introduction: Normal nerve conduction velocity of radial nerve is essential for differential diagnosis of various type of radial neuropathies, C7 radiculopathy and nerve lesion.
Sunil Chouhan
doaj +1 more source
Remote Sensing, 2021 The strategy providing an estimation of both the mean velocity and the temporal and spatial spectra of radial velocity from data of the same pulse coherent Doppler lidar is proposed.
Viktor A. Banakh +3 more
doaj +1 more source
The LCES HIRES/Keck Precision Radial Velocity Exoplanet Survey [PDF]
, 2017 We describe a 20 year survey carried out by the Lick-Carnegie Exoplanet Survey Team (LCES), using precision radial velocities from HIRES on the Keck I telescope to find and characterize extrasolar planetary systems orbiting nearby F, G, K, and M dwarf ...
P. Butler +10 more
semanticscholar +1 more source
A comprehensive radial velocity error budget for next generation Doppler spectrometers [PDF]
Astronomical Telescopes + Instrumentation, 2016 We describe a detailed radial velocity error budget for the NASA-NSF Extreme Precision Doppler Spectrometer instrument concept NEID (NN-explore Exoplanet Investigations with Doppler spectroscopy).
S. Halverson +16 more
semanticscholar +1 more source
Transactions of the International Astronomical Union, 1985 This report covers the period June 1981 to June 1984. and includes some material from IAU Colloquium No. 88, October, 1984.). The field of radial velocities has undergone a renaissance in the last few years as the new radial velocity machines have come into use. Not only can stars of much fainter magnitudes be reached, but the precision of the measured
M. Mayor +6 more
openaire +2 more sources
The Joker: A Custom Monte Carlo Sampler for Binary-star and Exoplanet Radial Velocity Data [PDF]
, 2016 Given sparse or low-quality radial velocity measurements of a star, there are often many qualitatively different stellar or exoplanet companion orbit models that are consistent with the data.
A. Price-Whelan +3 more
semanticscholar +1 more source
Characterization of the radial velocity signal induced by rotation in late-type dwarfs [PDF]
, 2017 We investigate the activity induced signals related to rotation in late type stars (FGKM). We analyse the Ca II H&K, the H alpha and the radial velocity time-series of 55 stars using the spectra from the HARPS public database and the light-curves ...
A. Mascareño +3 more
semanticscholar +1 more source