Results 31 to 40 of about 2,851,278 (244)

Turbulence characterization from a forward-looking nacelle lidar [PDF]

open access: yesWind Energy Science, 2017
We present two methods to characterize turbulence in the turbine inflow using radial velocity measurements from nacelle-mounted lidars. The first uses a model of the three-dimensional spectral velocity tensor combined with a model of the spatial ...
A. Peña, J. Mann, N. Dimitrov
doaj   +1 more source

The TESS-Keck Survey. XVI. Mass Measurements for 12 Planets in Eight Systems

open access: yesThe Astronomical Journal, 2023
With JWST’s successful deployment and unexpectedly high fuel reserves, measuring the masses of sub-Neptunes transiting bright, nearby stars will soon become the bottleneck for characterizing the atmospheres of small exoplanets via transmission ...
Joseph M. Akana Murphy   +47 more
doaj   +1 more source

Extrasolar planets and brown dwarfs around A-F type stars - VII. Theta Cygni radial velocity variations: planets or stellar phenomenon? [PDF]

open access: yes, 2009
(abridged) In the frame of the search for extrasolar planets and brown dwarfs around early-type main-sequence stars, we present the results obtained on the early F-type star Theta Cygni. Elodie and Sophie at OHP were used to obtain the spectra.
A. Eggenberger   +61 more
core   +4 more sources

Detection of the nearest Jupiter analogue in radial velocity and astrometry data [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
The presence of Jupiter is crucial to the architecture of the Solar system and models underline this to be a generic feature of planetary systems. We find the detection of the difference between the position and motion recorded by the contemporary ...
F. Feng   +6 more
semanticscholar   +1 more source

First radial velocity results from the MINiature Exoplanet Radial Velocity Array (MINERVA) [PDF]

open access: yes, 2019
The MINiature Exoplanet Radial Velocity Array (MINERVA) is a dedicated observatory of four 0.7m robotic telescopes fiber-fed to a KiwiSpec spectrograph. The MINERVA mission is to discover super-Earths in the habitable zones of nearby stars.
Baker, Ashley D.   +54 more
core   +1 more source

Radial Velocity Measurements of HR 8799 b and c with Medium Resolution Spectroscopy [PDF]

open access: yesAstronomical Journal, 2019
High-contrast medium resolution spectroscopy has been used to detect molecules such as water and carbon monoxide in the atmospheres of gas giant exoplanets.
J. Ruffio   +8 more
semanticscholar   +1 more source

WIYN Open Cluster Study. XXXVIII. Stellar Radial Velocities in the Young Open Cluster M35 (NGC 2168) [PDF]

open access: yes, 2009
We present 5201 radial-velocity measurements of 1144 stars, as part of an ongoing study of the young (150 Myr) open cluster M35 (NGC 2168). We have observed M35 since 1997, using the Hydra Multi-Object Spectrograph on the WIYN 3.5m telescope. Our stellar
Aaron M. Geller   +27 more
core   +1 more source

On the Accuracy of Gaia Radial Velocities [PDF]

open access: yesOpen Astronomy, 2001
12 pages, 2 figures, 5 tables, in press in Baltic ...
Munari U., Agnolin P., Tomasella L.
openaire   +3 more sources

The BEBOP radial-velocity survey for circumbinary planets [PDF]

open access: yesAstronomy & Astrophysics, 2019
We introduce the BEBOP radial velocity survey for circumbinary planets. We initiated this survey using the CORALIE spectrograph on the Swiss Euler Telescope at La Silla, Chile.
D. Martin   +10 more
semanticscholar   +1 more source

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

open access: yesJournal 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

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