A Variational Technique for Dealiasing Doppler Radial Velocity Data [PDF]
Journal of Applied Meteorology, 2004 Velocity folding, or aliasing, is one of most significant impediments to the use of radial winds from Doppler weather radar. In this note, a variational algorithm is developed in which dealiasing is performed using wind gradient information. The key to the proposed method is that, by operating on gradients of velocity rather than on the velocity itself,
Jidong Gao, Kelvin K. Droegemeier
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Search for exoplanets with the radial-velocity technique: quantitative diagnostics of stellar activity [PDF]
Astronomy & Astrophysics, 2007 Aims: Stellar activity may complicate the analysis of high-precision radial-velocity spectroscopic data when looking for exoplanets signatures. We aim at quantifying the impact of stellar spots on stars with various spectral types and rotational velocities and comparing the simulations with data obtained with the HARPS spectrograph.
M. Desort +4 more
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Sensitivity of the Radial‐Velocity Technique in Detecting Outer Planets [PDF]
The Astrophysical Journal, 2001 31 pages (including 11 postscript figures).
J. A. Eisner, S. R. Kulkarni
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Measurement of radial velocities and velocity dispersion of stars in circumnuclear regions of galaxies using the 2D spectrosopy technique [PDF]
, 2001 10 pages, 9 Postscript figures, uses sao2 ...
А. В. Моисеев
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FM stars: a Fourier view of pulsating binary stars, a new technique for measuring radial velocities photometrically [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 Some pulsating stars are good clocks. When they are found in binary stars, the frequencies of their luminosity variations are modulated by the Doppler effect caused by orbital motion. For each pulsation frequency this manifests itself as a multiplet separated by the orbital frequency in the Fourier transform of the light curve of the star.
Hiromoto Shibahashi, D. W. Kurtz
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A NEW MULTI-BAND RADIAL VELOCITY TECHNIQUE FOR DETECTING EXOPLANETS AROUND ACTIVE STARS [PDF]
The Astrophysical Journal, 2012 The radial velocity (RV) technique is one of the most efficient ways of detecting exoplanets. However, large RV jitters induced by starspots on an active star can inhibit detection of any exoplanet present or even lead to a false positive detection. This paper presents a new multi-band RV technique capable of substantially reducing starspot-induced RV ...
Bo Ma, Jian Ge
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Plasma Physics and Controlled Fusion, 2021 Abstract A matrix inversion technique is derived to calculate local ion temperature from line-integrated measurements of an extended emission source in an axisymmetric plasma which exactly corrects for both toroidal velocity and radial velocity components.
R. E. Bell
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Precision radial velocity measurements by the forward-modeling technique in the near-infrared [PDF]
Publications of the Astronomical Society of Japan, 2020 Abstract Precision radial velocity (RV) measurements in the near-infrared are a powerful tool to detect and characterize exoplanets around low-mass stars or young stars with higher magnetic activity. However, the presence of strong telluric absorption lines and emission lines in the near-infrared that significantly vary in time can ...
Teruyuki Hirano +17 more
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How Close Are We To Detecting Earth-like Planets in the Habitable Zone Using the Radial Velocity Technique? [PDF]
, 2011 Discovering an Earth-like exoplanet in habitable zone is an important milestone for astronomers in search of extra-terrestrial life. While the radial velocity (RV) technique remains one the most powerful tools in detecting and characterizing exo-planetary sys- tems, we calculate the uncertainties in precision RV measurements considering stellar ...
Ji Wang, Jian Ge
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