Results 61 to 70 of about 2,851,278 (244)
A comprehensive radial velocity error budget for next generation Doppler spectrometers [PDF]
Astronomical Telescopes + Instrumentation, 2016 We describe a detailed radial velocity error budget for the NASA-NSF Extreme Precision Doppler Spectrometer instrument concept NEID (NN-explore Exoplanet Investigations with Doppler spectroscopy).
S. Halverson +16 more
semanticscholar +1 more source
, 2001 The G0V star HD166435 has been observed by the fiber-fed spectrograph ELODIE as one of the targets in the large extra-solar planet survey that we are conducting at the Observatory of Haute-Provence.
C. Perrier +9 more
core +4 more sources
CEPHEID PULSATIONS FROM RADIAL VELOCITY MEASUREMENTS
Odessa Astronomical Publications, 2017 We discuss the results of our many-year program of Cepheid radial velocities concerning the Hertzsprung sequence in radial-velocity curves, double-mode Cepheids, the period-radius relation, binary Cepheids.
N. A. Gorynya, N. N. Samus
doaj +1 more source
, 2004 We present the results of a radial velocity survey of a sample of Hyades stars, and discuss the effects of stellar activity on radial velocity measurements. The level of radial velocity scatter due to rotational modulation of stellar surface features for
Allende Prieto C. +5 more
core +2 more sources
Disentangling Time-series Spectra with Gaussian Processes: Applications to Radial Velocity Analysis [PDF]
, 2017 Measurements of radial velocity variations from the spectroscopic monitoring of stars and their companions are essential for a broad swath of astrophysics; these measurements provide access to the fundamental physical properties that dictate all phases ...
I. Czekala +6 more
semanticscholar +1 more source
The Death of Vulcan: NEID Reveals That the Planet Candidate Orbiting HD 26965 Is Stellar Activity
The Astronomical JournalWe revisit the long-studied radial velocity (RV) target HD 26965 using recent observations from the NASA-NSF “NEID” precision Doppler facility. Leveraging a suite of classical activity indicators, combined with line-by-line RV analyses, we demonstrate ...
Abigail Burrows +19 more
doaj +1 more source
European Physical Journal C: Particles and Fields, 2019 The significance of the radial velocity effects on the leading-order gravitational frequency shift in some special cases was reported recently. This paper investigates the gravitational shift of frequency of light propagating in the equatorial plane of a
Guansheng He, Chaohong Pan, Wenbin Lin
doaj +1 more source
Effect of Radial Porosity Oscillation on the Thermal Performance of Packed Bed Latent Heat Storage
Engineering, 2021 Owing to its high heat storage capacity and fast heat transfer rate, packed bed latent heat storage (LHS) is considered as a promising method to store thermal energy.
H.B. Liu, C.Y. Zhao
doaj +1 more source
Radial velocities of giant stars: an investigation of line profile variations [PDF]
, 2007 Since 1999, a radial velocity survey of 179 red giant stars is ongoing at Lick Observatory with a one month cadence. At present ~20-100 measurements have been collected per star with an accuracy of 5 to 8 m/s.
A Quirrenbach +13 more
core +4 more sources
The Joker: A Custom Monte Carlo Sampler for Binary-star and Exoplanet Radial Velocity Data [PDF]
, 2016 Given sparse or low-quality radial velocity measurements of a star, there are often many qualitatively different stellar or exoplanet companion orbit models that are consistent with the data.
A. Price-Whelan +3 more
semanticscholar +1 more source