Results 61 to 70 of about 2,571,706 (401)

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, Mickael Bonnefoy, Maud Langlois, Esther Buenzli, F. Rigal, Sergio Messina, Silvano Desidera, Anne-Marie Lagrange, Valentina D'Orazi, Alain Delboulbé, Markus Feldt, Beth Biller, C. Petit, Alice Zurlo, Graeme Salter, C. Lazzoni, P. J. Potiron, Wolfgang Brandner, Janis Hagelberg, Clément Perrot, Anthony Boccaletti, Anne-Lise Maire, Matthias Meyer, Raffaele Gratton, S. Peretti, Sylvain Rochat, Jose Ramos, Gael Chauvin, Arthur Vigan, Mariangela Bonavita, Jean-Luc Beuzit, Dino Mesa, J. Lannier, David Mouillet, Baptiste Lavie, Tanmay Bhowmik, Claire Moutou, M. Cudel, Markus Janson, Markus Janson, E. Sissa   +40 more
openaire   +11 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, A. Reiners, P. Amado, M. Azzaro, F. Bauer, V. B'ejar, J. Caballero, E. Guenther, H. Hagen, S. Jeffers, A. Kaminski, M. Kürster, R. Launhardt, D. Montes, J. C. Morales, A. Quirrenbach, S. Reffert, I. Ribas, W. Seifert, L. Tal-Or, V. Wolthoff   +20 more
semanticscholar   +1 more source

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, Davide Gandolfi, G. Antoniciello, G. Antoniciello   +3 more
semanticscholar   +1 more source

Experimental study on the Schmidt number dependence of the scalar derivative statistics in a liquid axisymmetric jet

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, Yasuhiko SAKAI, Osamu TERASHIMA, Kouji NAGATA, Yasumasa ITO, Masataka YOKOI   +5 more
doaj   +1 more source

Pulkovo Compilation of Radial Velocities for 35495 Hipparcos Stars in a Common System [PDF]

Astronomy Letters 32 (2006) 759-771, 2016
The Pulkovo Compilation of Radial Velocities (PCRV) has been made to study the stellar kinematics in the local spiral arm. The PCRV contains weighted mean absolute radial velocities for 35 495 Hipparcos stars of various spectral types and luminosity classes over the entire celestial sphere mainly within 500 pc of the Sun.
arxiv   +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, J. Almenara, R. Cloutier, A. Wünsche, N. Astudillo-Defru, Z. Berta-Thompson, F. Bouchy, D. Charbonneau, X. Delfosse, R. D'iaz, J. Dittmann, René Doyon, T. Forveille, Jonathan Irwin, C. Lovis, M. Mayor, K. Menou, F. Murgas, E. Newton, F. Pepe, Nuno C. Santos, S. Udry   +21 more
semanticscholar   +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, Hiroshi SAITO, Hideki HASHIMOTO, Junichi FURUKAWA   +3 more
doaj   +1 more source

EVALUATION OF THE POSSIBILITIES OF PROVIDING THE NECESSARY ACCURACY OF THE RADIAL VELOCITY MEASURING OF A TARGET BY COHERENT-PULSE RADARS OUTSIDE THE LINE OF SIGHT

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, Vladimir Karlov, Valentin Petrushenko, Oksana Biesova, Olena Lukashuk   +4 more
doaj   +1 more source

Relationship between Axial Width and Flow Characteristics of Pump Chamber in Double Volute Centrifugal Pump

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