Results 31 to 40 of about 2,439,305 (313)

Allesfitter: Flexible Star and Exoplanet Inference from Photometry and Radial Velocity [PDF]

open access: yesAstrophysical Journal Supplement Series, 2019
We present allesfitter, a public and open-source Python software for flexible and robust inference of stars and exoplanets given photometric and radial velocity data.
M. Gunther, T. Daylan
semanticscholar   +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

Hemodynamic Data Analysis and Site of Measurement in Children and Adolescents

open access: yesArtery Research, 2020
Pulse wave velocity is a method of functional vascular evaluation. The gold standard is the carotid-femoral pulse wave velocity measurement. However, the software allows measurement among radial, carotid and femoral artery.
Mirjam Močnik, Nataša Marčun Varda
doaj   +1 more source

Research on Tangential Velocity Solution and Accuracy Analysis of Radar Target [PDF]

open access: yesMATEC Web of Conferences, 2023
In this paper, a calculation method for the tangential velocity solution of radar target based on linear vector method is proposed. It makes full use of the advantage of high precision radial velocity measurement of radar, and realizes the accurate ...
Yin Qi   +3 more
doaj   +1 more source

Overfitting Affects the Reliability of Radial Velocity Mass Estimates of the V1298 Tau Planets

open access: yesThe Astronomical Journal, 2023
Mass, radius, and age measurements of young (≲100 Myr) planets have the power to shape our understanding of planet formation. However, young stars tend to be extremely variable in both photometry and radial velocity (RV) measurements, which makes ...
Sarah Blunt   +25 more
doaj   +1 more source

Three years of Sun-as-a-star radial-velocity observations on the approach to solar minimum [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
The time-variable velocity fields of solar-type stars limit the precision of radial-velocity determinations of their planets’ masses, obstructing detection of Earth twins.
A. Cameron   +36 more
semanticscholar   +1 more source

RadVel: The Radial Velocity Modeling Toolkit [PDF]

open access: yes, 2018
RadVel is an open-source Python package for modeling Keplerian orbits in radial velocity (RV) timeseries. RadVel provides a convenient framework to fit RVs using maximum a posteriori optimization and to compute robust confidence intervals by sampling the
B. Fulton   +3 more
semanticscholar   +1 more source

Filtering Solar-Like Oscillations for Exoplanet Detection in Radial Velocity Observations [PDF]

open access: yesAstronomical Journal, 2019
Cool main-sequence, subgiant, and red giant stars all show solar-like oscillations, pulsations that are excited and intrinsically damped by near-surface convection.
W. Chaplin   +4 more
semanticscholar   +1 more source

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

open access: yesAlexandria 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   +9 more
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

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