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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
Subjects Levels Resource Types
Astronomy
- Astronomy Education
= Curricula
- Cosmic Time and Distance
= Redshift
- Exoplanets
= Detection Methods
- Lower Undergraduate
- High School
- Informal Education
- Instructional Material
= Curriculum support
= Demonstration
= Simulation
Intended Users Formats Ratings
- Educators
- Learners
- application/java
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Access Rights:
Free access
License:
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Mario Belloni
Keywords:
Doppler effect, EJS, Easy Java Simulations, OSP, Open Source Physics, detection, exoplanet, radial velocity
Record Cloner:
Metadata instance created June 29, 2010 by Mario Belloni
Record Updated:
July 10, 2013 by Matt Mohorn
Last Update
when Cataloged:
June 29, 2010
Other Collections:

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Record Link
AIP Format
M. Belloni, Computer Program EXOPLANET DETECTION: RADIAL VELOCITY METHOD, Version 1.0 (2010), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10155&DocID=1732).
AJP/PRST-PER
M. Belloni, Computer Program EXOPLANET DETECTION: RADIAL VELOCITY METHOD, Version 1.0 (2010), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10155&DocID=1732>.
APA Format
Belloni, M. (2010). Exoplanet Detection: Radial Velocity Method (Version 1.0) [Computer software]. Retrieved April 23, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10155&DocID=1732
Chicago Format
Belloni, Mario. "Exoplanet Detection: Radial Velocity Method." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10155&DocID=1732 (accessed 23 April 2014).
MLA Format
Belloni, Mario. Exoplanet Detection: Radial Velocity Method. Vers. 1.0. Computer software. 2010. Java (JRE) 1.5, Java3D. 23 Apr. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10155&DocID=1732>.
BibTeX Export Format
@misc{ Author = "Mario Belloni", Title = {Exoplanet Detection: Radial Velocity Method}, Month = {June}, Year = {2010} }
Refer Export Format

%A Mario Belloni
%T Exoplanet Detection: Radial Velocity Method
%D June 29, 2010
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10155&DocID=1732
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Belloni, Mario
%D June 29, 2010
%T Exoplanet Detection: Radial Velocity Method
%7 1.0
%8 June 29, 2010
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10155&DocID=1732


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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.

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