Education Prize Logo
Science SPORE Prize
November 2011

NSF Logo
The Open Source Physics Project is supported by NSF DUE-0442581.

Computer Program Detail Page

Item Picture
written by Mario Belloni
The Hertzsprung–Russell (H-R) Diagrams model simulates Hertzsprung–Russell (HR or H-R) diagram for groups of stars. The diagram is a scatter plot of steller luminosity vs. stellar temperature. The luminosity of stars is proportional to the star's radius squared and its temperature to the fourth power, and for Main Sequence stars, their luminosity is also proportional to their mass to the 3.5 power. Since the range of stellar luminosities and stellar temperatures is so large, the plot uses a log-log scale. The diagram is a way to understand stellar evolution.

The HR diagram shows nearby stars, bright stars, and a user-defined star. One can also show the blackbody radiation curve and the user-defined star. The radius of the user-defined star (in Rsun) and the temperature of the user-defined star in Kelvin (5780 K is Tsun) can be changed.

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
- Stars
= Hertzsprung-Russell Diagram
= Spectral Types
Optics
- Photometry
= Blackbodies
- Lower Undergraduate
- High School
- Informal Education
- Instructional Material
= Curriculum support
= Demonstration
= Simulation
Intended Users Formats Ratings
- Educators
- Learners
- application/java
  • Currently 5.0/5

Rated 5.0 stars by 1 person

Want to rate this material?
Login here!


Access Rights:
Free access
License:
This material is released under a GNU General Public License Version 3 license.
Rights Holder:
Mario Belloni
Keywords:
EJS, Easy Java Simulations, H-R Diagram, OSP, Open Source Physics, blackbody, spectrum, star
Record Cloner:
Metadata instance created November 11, 2010 by Mario Belloni
Record Updated:
June 6, 2014 by Andreu Glasmann
Last Update
when Cataloged:
November 11, 2010
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
M. Belloni, Computer Program HERTZSPRUNG–RUSSELL (H-R) DIAGRAMS, Version 1.0 (2010), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10503&DocID=1959).
AJP/PRST-PER
M. Belloni, Computer Program HERTZSPRUNG–RUSSELL (H-R) DIAGRAMS, Version 1.0 (2010), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10503&DocID=1959>.
APA Format
Belloni, M. (2010). Hertzsprung–Russell (H-R) Diagrams (Version 1.0) [Computer software]. Retrieved October 22, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10503&DocID=1959
Chicago Format
Belloni, Mario. "Hertzsprung–Russell (H-R) Diagrams." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10503&DocID=1959 (accessed 22 October 2014).
MLA Format
Belloni, Mario. Hertzsprung–Russell (H-R) Diagrams. Vers. 1.0. Computer software. 2010. Java (JRE) 1.5, Java3D. 22 Oct. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10503&DocID=1959>.
BibTeX Export Format
@misc{ Author = "Mario Belloni", Title = {Hertzsprung–Russell (H-R) Diagrams}, Month = {November}, Year = {2010} }
Refer Export Format

%A Mario Belloni
%T Hertzsprung–Russell (H-R) Diagrams
%D November 11, 2010
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10503&DocID=1959
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Belloni, Mario
%D November 11, 2010
%T Hertzsprung–Russell (H-R) Diagrams
%7 1.0
%8 November 11, 2010
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10503&DocID=1959


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 AIP Style presented is based on information from the AIP Style Manual.

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.

This resource is stored in 2 shared folders.

You must login to access shared folders.

Hertzsprung–Russell (H-R) Diagrams:

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 Hertzsprung–Russell (H-R) Diagrams.

relation by Mario Belloni

Know of another related resource? Login to relate this resource to it.
Save to my folders

Supplements

Contribute

Related Materials

Similar Materials

Featured By

uCOMP
Oct 1 - Mar 31, 2013

The OSP Network:
Open Source Physics - Tracker - EJS Modeling
Physlet Physics
Physlet Quantum Physics