The Bulge Radial Velocity Assay (BRAVA): I. Techniques and a Rotation Curve [PDF]
The Astrophysical Journal, 2006 We are undertaking a large scale radial velocity survey of the Galactic bulge which uses M giant stars selected from the 2MASS catalog as targets for the CTIO 4m Hydra multi-object spectrograph.
R. M. Rich +3 more
semanticscholar +6 more sources
The Pathfinder testbed: exploring techniques for achieving precision radial velocities in the near infrared [PDF]
SPIE Proceedings, 2010 The Penn State Pathfinder is a prototype warm fiber-fed Echelle spectrograph with a Hawaii-1 NIR detector that has already demonstrated 7-10 m/s radial velocity precision on integrated sunlight.
L. Ramsey +7 more
semanticscholar +6 more sources
Statistical Methods for Exoplanet Detection with Radial Velocities [PDF]
Annual Review of Statistics and Its Application, 2022 Exoplanets can be detected with various observational techniques. Among them, the radial velocity (RV) has the key advantages of revealing the architecture of planetary systems and measuring orbital eccentricities and mass.
N. Hara, E. Ford
semanticscholar +1 more source
Precise dynamical masses of new directly imaged companions from combining relative astrometry, radial velocities, and Hipparcos-Gaia eDR3 accelerations [PDF]
Astronomy & Astrophysics, 2022 Aims. With an observing time span of more than 20 years, the CORALIE radial-velocity survey is able to detect long-term trends in data corresponding to companions with masses and separations accessible to direct imaging.
E. Rickman +9 more
semanticscholar +1 more source
The Solar Neighborhood XLVIII: Nine Giant Planets Orbiting Nearby K Dwarfs, and the CHIRON Spectrograph’s Radial Velocity Performance [PDF]
Astronomical Journal, 2021 We report initial results of a large radial velocity survey of K dwarfs up to a distance of 50 pc from the solar system, to look for stellar, brown dwarf, and Jovian planets using radial velocities from the CHIRON spectrograph on the CTIO/SMARTS 1.5 m ...
L. Paredes +7 more
semanticscholar +1 more source
An Extreme-precision Radial-velocity Pipeline: First Radial Velocities from EXPRES [PDF]
Astronomical Journal, 2020 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
R. R. Petersburg +15 more
semanticscholar +1 more source
Toward Extremely Precise Radial Velocities. II. A Tool for Using Multivariate Gaussian Processes to Model Stellar Activity [PDF]
Astrophysical Journal, 2020 The radial velocity method is one of the most successful techniques for the discovery and characterization of exoplanets. Modern spectrographs promise measurement precision of 0.2–0.5 m s−1 for an ideal target star.
C. Gilbertson +3 more
semanticscholar +1 more source
Measuring precise radial velocities on individual spectral lines [PDF]
Astronomy & Astrophysics, 2018 Context. Stellar activity is the main limitation to the detection of an Earth-twin using the radial-velocity (RV) technique. Despite many efforts in trying to mitigate the effect of stellar activity using empirical and statistical techniques, it seems ...
X. Dumusque
semanticscholar +1 more source
Revisiting Radial Velocity Measurements of the K2-18 System with the Line-by-Line Framework [PDF]
, 2022 The cross-correlation function and template matching techniques have dominated the world of precision radial velocities for many years. Recently, a new technique, named line-by-line, has been developed as an outlier resistant way to efficiently extract ...
M. Radica +11 more
semanticscholar +1 more source
The Planetary Mass–Radius Relation and Its Dependence on Orbital Period as Measured by Transit Timing Variations and Radial Velocities [PDF]
, 2017 The two most common techniques for measuring planetary masses—the radial velocity (RV) and the transit timing variation (TTV) techniques—have been observed to yield systematically different masses for planets of similar radii.
S. Mills, T. Mazeh
semanticscholar +1 more source