Computer Program Detail Page
This ComPADRE record has not been chosen for inclusion into the Physics Front collection. If you feel this record should be included, you may contact the editor using our feedback form.
Exoplanet Detection: Radial Velocity Method
written by Mario Belloni
The Exoplanet Detection: The Radial Velocity Method model simulates the detection of exoplanets by using the radial velocity method and the Doppler effect. In this simulation the exoplanet orbits the star (sun-sized) in circular motion via Kepler's third law. The radial velocity of the star is determined from the velocity of the exoplanet. This velocity is then used to calculate the Doppler shift of the Fraunhofer lines of the star. In practice it is the Doppler shift of the Fraunhofer lines of the star that are detected and from this the radial velocity is inferred. From this the mass and orbital period and average exoplanet-star separation are determined. In the simulation the star-exoplanet system is shown as seen from Earth (edge on view) and from space (overhead view), and with the star and exoplanet sizes not shown to the scale of the orbit. In addition, the Fraunhofer lines are shown. The radial velocites of stars are such that the Doppler shifts are small, to compensate you may snap to the Na line and use the right-hand side slider to zoom in on that line to see wavelength shift. The mass of the exoplanet (relative to the mass of Jupiter), the average star-exoplant separation (in AU), and the inclination of the system relative to Earth can be changed.
The simulation uses Java 3D, if installed, to render the view the star and exoplanet. If Java 3D is not installed, the simulation will default to simple 3D using Java.
Please note that this resource requires at least version 1.5 of Java (JRE).
Please note that this resource requires Java3D.
View the source code document attached to this resource
ComPADRE is beta testing Citation Styles!
Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
The APA Style presented is based on information from APA Style.org: Electronic References.
The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.
The MLA Style presented is based on information from the MLA FAQ.
Exoplanet Detection: Radial Velocity Method:
Is Based On Easy Java Simulations Modeling and Authoring Tool
The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Exoplanet Detection: The Radial Velocity Method.relation by Mario Belloni
Know of another related resource? Login to relate this resource to it.