Radial Velocity

Radial velocity is the velocity of an object in the direction of the line of sight (i.e., its speed straight towards or away from an observer). In astronomy, radial velocity most commonly refers to the spectroscopic radial velocity. The spectroscopic radial velocity is the radial component of the velocity of the source at emission and the observer at observation, as determined by spectroscopy. Astrometric radial velocity is the radial velocity as determined by astrometric observations (for example, a secular change in the annual parallax).

Read more about Radial VelocityRadial Velocity Comparison Tables

Other articles related to "radial velocity, velocity":

Alpha Centauri - Planets - Possibility of Additional Planets
... Several established planet-hunting teams have used various radial velocity or star transit methods in their searches around these two bright stars ... Theoretical studies on the detectability via radial velocity analysis have shown that a dedicated campaign of high-cadence observations with a 1–m class telescope can reliably detect a ... Radial velocity measurments of Alpha Centauri B with HARPS spectrograph ruled out planets of more than 4 Earth masses to the distance of the habitable zone of the star (rotat ...
Radial Velocity Comparison Tables - For MK-type Stars With Planets in The Habitable Zone
... Stellar Mass (M☉) Planet Mass (M⊕) Lum ... (L0) Type RHAB (AU) vradial (m/s) Period (days) 0.10 1.0 8e-4 M8 0.028 1.68 6 0.21 1.0 7.9e-3 M5 0.089 0.65 21 0.47 1.0 6.3e-2 M0 0.25 0.26 67 0.65 1.0 1.6e-1 K5 0.40 0.18 115 0.78 2.0 4.0e-1 K0 0.63 0.25 209 Ref ...
Super-Earths - Discoveries - More Notable Super-Earth Discoveries By Year - 2010
... b with a minimum mass of 4.15 Earth masses, is the second least massive planet detected by the radial velocity method ... The only confirmed radial velocity planet smaller than this planet is Gliese 581 e at 1.9 Earth masses (see above) ... It was discovered using the radial velocity method by scientists at the University of California at Santa Cruz and the Carnegie Institution of Washington ...
COROT-7b - Uncertain Mass
... subsequently used to measure the mass of COROT-7b with the radial velocity method ... The strong activity of the host star, which perturbates radial velocity measurements, made the mass determination troublesome ... The radial velocity confirmation of the planet is in shaky ground too, with a tentative detection of only 1.2 sigma certainty ...
Automated Planet Finder
... The telescope will use high-precision radial velocity measurements to measure the gravitational reflex motion of nearby stars caused by the orbiting of planets ... The spectrometer will be very sensitive and is optimized for speed and radial velocity precision, and it will detect very small changes in each star’s velocity ...