Results 1 to 10 of about 61,546 (296)

Radial velocity observations of VB10 [PDF]

open access: yesEPJ 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.   +5 more
doaj   +4 more sources

Signals embedded in the radial velocity noise* [PDF]

open access: yesEPJ Web of Conferences, 2013
Bayesian data analysis techniques, together with suitable statistical models, can be used to obtain much more information from noisy data than the traditional frequentist methods.
Tuomi Mikko
doaj   +4 more sources

THE RADIAL VELOCITY OF A ORIONIS [PDF]

open access: bronzePublications of the Astronomical Society of the Pacific, 1908
H. C. Plummer
openalex   +3 more sources

Automatic Recognition Algorithm of Convergence Region Based on Relative Storm Radial Velocity Field

open access: yes应用气象学报, 2021
An algorithm for automatically identifying the mid-altitude radial convergence from the storm-relative radial velocity field is proposed. The algorithm first identifies the positive-negative velocity segments in each radial direction on the single ...
Zhu Li, Kang Lan
doaj   +1 more source

TOI 560: Two Transiting Planets Orbiting a K Dwarf Validated with iSHELL, PFS, and HIRES RVs

open access: yesThe Astronomical Journal, 2022
We validate the presence of a two-planet system orbiting the 0.15–1.4 Gyr K4 dwarf TOI 560 (HD 73583). The system consists of an inner moderately eccentric transiting mini-Neptune (TOI 560 b, $P={6.3980661}_{-0.0000097}^{+0.0000095}$ days, $e={0.294}_{-0.
Mohammed El Mufti   +95 more
doaj   +1 more source

Precise Radial Velocities and Radial Velocity Standards [PDF]

open access: yesSymposium - International Astronomical Union, 1985
By imposing absorption lines of HF in stellar spectra we can measure changes in r.v. with a precision of ~10m/s from a single spectrum, provided stellar line profiles are not distorted by atmospheric motions. The precision of absolute radial velocities is currently limited to ~100m/s by knowledge of rest wavelengths.
Gordon A. H. Walker   +3 more
openaire   +2 more sources

Correction of Dual-PRF Velocity for Operational S-Band Doppler Weather Radar

open access: yesRemote Sensing, 2023
The Weather Radar Center (WRC) of the Korea Meteorological Administration (KMA) has been providing three-dimensional radar wind fields based on the “WInd Synthesis System using Doppler Measurements (WISSDOM)” in real time since February 2019.
So-Yeon Park   +2 more
doaj   +1 more source

A Study of the Radial Velocity of BX Andromedae [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2004
High resolution spectroscopic observations of BX And using the BOES (Bohyunsan Optical Echelle Spectrograph) of Bohyunsan Optical Astronomical Observatory (BOAO) were performed during 26-27, Feb. 2003.
Chung-Uk Lee   +3 more
doaj   +1 more source

COMMISSION 30: RADIAL VELOCITIES [PDF]

open access: yesProceedings of the International Astronomical Union, 2007
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   +11 more
openaire   +8 more sources

Automated Recognition of Macro Downburst Using Doppler Weather Radar

open access: yesAtmosphere, 2022
In light of the macro downburst’s ground divergent flow field characteristics and high reflectivity, this paper proposes an algorithm for identifying the downburst area using a Doppler weather radar low-level radial velocity and reflectivity factor ...
Xu Wang   +4 more
doaj   +1 more source

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