Radial Velocity Planet Resources in the Exoplanet Archive

This page describes the resources available in the Exoplanet Archive for planets discovered using the radial velocity (RV) technique.

Technique Overview

The radial velocity (RV) method (sometimes referred to as the "Doppler wobble" method) is an indirect method for detecting exoplanets which depends on measuring the small reflex motion of a star caused by an exoplanet companion as the two orbit their common center of gravity. Since the star is so much more massive than the planet, this reflex motion is very small, typically on the order of a few to hundreds of meters per second. The motion is detected using high-resolution spectroscopy to measure tiny Doppler shifts in the stellar spectrum toward the blue or red as the star changes its velocity along the line of sight, yielding information on the mass of the planet and its orbital period and eccentricity. Reviews of the method can be found in Radial Velocity by Lovis & Fischer.

Confirmed Planets

Planets discovered via the transit method which meet the Archive's exoplanet criteria are included in the Confirmed Planets table.

  • To see only the planets discovered by the RV method, enter radial velocity in the filter box under Discovery Method.
  • Often planets will be followed up with RV observations after being discovered by alternate methods (e.g. the transit method). To see all planets with detected RV signals, click the Select Columns link and select the Planet RV Flag column (under Planet Columns). Click on Update Selection and close the Column Controls pop-up box. Enter 1 in the filter box under Planet RV Flag to recover the full list of RV-detected planets.
The count of RV-discovered planets is available on the Statistics page. (Note that clicking on Radial Velocity in the Confirmed Exoplanets Statistics table takes you to the Confirmed Planet table with that filter already applied.)

Contributed Data

A complete overview of all the available community-contributed data in the Archive, including RV data, is given in the Contributed Data Sets documentation page.

We have worked with J. Wright's group at Penn State to include radial velocity time series from the published literature. A wget script for these files is available from the Bulk Data Download page, listed in the Time Series Data table.

Additionally, we offer the RV curves obtained by the MARVELS team described in Thomas et al. 2016. The full data set is in this .tar file.

Individual RV files are also available from the Overview pages for the relevant stars. Instructions on how to access these for an individual object are here.

Additional Links

Last updated 24 May 2016