Results 1 to 10 of about 503,496 (302)

Eulerian–Lagrangian fluid dynamics study on the effects of inlet radial angle on the performance and flow pattern of multi-inlet cyclone separator

Alexandria Engineering Journal, 2023
This paper presents a study on the influence of inlet radial angle in a multi-inlet cyclone separator using Eulerian-Lagrangian (EL) fluid dynamics approach. The investigation focuses on the behavior of air and solid particles within the cyclone.
Ibrahim Ademola Fetuga, Olabode Thomas Olakoyejo, Sogo Mayokun Abolarin, Adekunle O. Adelaja, Samuel Olajide Ologunoba, Omotayo Oluwatusin, Oluwaseun Fetuata, Olayinka Omowunmi Adewumi, Udo David Robinson, Antonio Marcos de Oliveira Siqueira   +9 more
doaj   +1 more source

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

Wind 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

An Extreme-precision Radial-velocity Pipeline: First Radial Velocities from EXPRES [PDF]

The Astronomical Journal, 2020
Abstract The EXtreme-PREcision Spectrograph (EXPRES) is an environmentally stabilized, fiber-fed, R = 137,500, optical spectrograph. It was recently commissioned at the 4.3 m Lowell Discovery Telescope near Flagstaff, Arizona. The spectrograph was designed with a target radial-velocity (RV) precision of 30 cm s−1.
Ryan R. Petersburg, J. M. 冕 Joel Ong 王加, Lily L. Zhao, Ryan T. Blackman, John M. Brewer, Lars A. Buchhave, Samuel H. C. Cabot, Allen B. Davis, Colby A. Jurgenson, Christopher Leet, Tyler M. McCracken, David Sawyer, Mikhail Sharov, René Tronsgaard, Andrew E. Szymkowiak, Debra A. Fischer   +15 more
openaire   +3 more sources

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

The 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, Natalie M. Batalha, Nicholas Scarsdale, Howard Isaacson, David R. Ciardi, Erica J. Gonzales, Steven Giacalone, Joseph D. Twicken, Anne Dattilo, Tara Fetherolf, Ryan A. Rubenzahl, Ian J. M. Crossfield, Courtney D. Dressing, Benjamin Fulton, Andrew W. Howard, Daniel Huber, Stephen R. Kane, Erik A. Petigura, Paul Robertson, Arpita Roy, Lauren M. Weiss, Corey Beard, Ashley Chontos, Fei Dai, Malena Rice, Judah Van Zandt, Jack Lubin, Sarah Blunt, Alex S. Polanski, Aida Behmard, Paul A. Dalba, Michelle L. Hill, Lee J. Rosenthal, Casey L. Brinkman, Andrew W. Mayo, Emma V. Turtelboom, Isabel Angelo, Teo Močnik, Mason G. MacDougall, Daria Pidhorodetska, Dakotah Tyler, Molly R. Kosiarek, Rae Holcomb, Emma M. Louden, Lea A. Hirsch, Emily A. Gilbert, Jay Anderson, Jeff A. Valenti   +47 more
doaj   +1 more source

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

, 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, Barrado y Navascués, Christopher J. Dolan, Duquennoy, Ella K. Braden, Geller, Goldberg, Hole, Imants Platais, Kalirai, Kroupa, Mathieu, Mathieu, Mazeh, McNamara, Meibom, Meibom, Meibom, Meibom, Reimers, Rhode, Robert D. Mathieu, Steinhauer, Søren Meibom, von Hippel, Williams, Williams, Williams   +27 more
core   +1 more source

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

, 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., Barnes, Stuart I., Beatty, Thomas G., Berlind, Perry, Blackhurst, Eric, Blake, Cullen H., Bolton, Adam S., Bottom, Michael, Cale, Bryson, Calkins, Michael L., Colón, Ana, Cornachione, Matthew A., de Saintonge, Forest Chaput, de Vera, Jon, Eastman, Jason D., Esquerdo, Gilbert, Falco, Emilio E., Fortin, Pascal, Garcia-Mejia, Juliana, Geneser, Claire, Gibson, Steven R., Grell, Gabriel, Groner, Ted, Halverson, Samuel, Hamlin, John, Henderson, M., Horner, J., Houghton, Audrey, Janssens, Stefaan, Johnson, John Asher, Johnson, Samson A., Jonas, Graeme, Jones, Damien, Kirby, Annie, Lawrence, George, Luebbers, Julien Andrew, McCrady, Nate, Morton, Timothy D., Muirhead, Philip S., Myles, Justin, Nava, Chantanelle, Plavchan, Peter, Reed, Tony, Relles, Howard M., Riddle, Reed, Rivera-García, Kevin O, Robinson, Connor, Schap III, William J., Sergi, Anthony, Sliski, David H., Swift, Jonathan J., Wang, Sharon X., Wilson, Maurice L., Wittenmyer, Robert A., Wright, Jason T.   +54 more
core   +1 more source

COMMISSION 30: RADIAL VELOCITIES [PDF]

Proceedings of the International Astronomical Union, 2008
The past three-year period has seen steady efforts to collect large numbers of radial-velocity (RV) measurements, as well as important applications of radial velocities to astrophysics. Improvements in precision continue to be driven largely by exoplanet research.
Stephane Udry, Guillermo Torres, Birgitta Nordström, Francis C. Fekel, Kenneth C. Freeman, Elena V. Glushkova, Geoffrey W. Marcy, Birgitta Nordström, Robert D. Mathieu, Dimitri Pourbaix, Catherine Turon, Tomaz Zwitter   +11 more
openaire   +6 more sources

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

, 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, A. Vidal-Madjar, A.-M. Lagrange, B. Loeillet, Baraffe, Baranne, Boss, C. Lovis, C. Moutou, C. Perrier, Chelli, D. Ehrenreich, D. Queloz, D. Ségransan, Deming, Desort, Desort, Dommanget, Doyon, Erspamer, F. Bouchy, F. Galland, F. Pepe, F. Pont, G. Hébrard, G. Montagnier, Galland, Galland, Galland, Galland, Gray, Gray, H. Beust, Hartkopf, Hatzes, Hatzes, Högbom, I. Boisse, Ida, Johnson, Johnson, Kennedy, Kürster, Lagrange, Laughlin, Lovis, M. Desort, M. Mayor, Mathias, Márquez, N. C. Santos, N. Meunier, Niedzielski, Pepe, Rigaut, S. Udry, Sato, T. Forveille, van Leeuwen, X. Bonfils, X. Delfosse, Yoder   +61 more
core   +4 more sources

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

Radial velocity observations of VB10

EPJ Web of Conferences, 2011
VB 10 is the smallest star known to harbor a planet according to the recent astrometric study of Pravdo & Shaklan [1]. Here we present near-infrared (J-band) radial velocity of VB 10 performed from high resolution (R~20,000) spectroscopy (NIRSPEC/KECK II)
Rodler F., Burgo C. del, Osorio M.R. Zapatero, Martin E., Deshpande R., Montgomery M.M.   +5 more
doaj   +1 more source