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written by the University of Oregon Physics Department
This activity asks students   to observe the images of three spiral galaxies of different surface brightnesses. Each of the loaded images is active in the sense that you can place a rectangular aperture on them and determine the flux. The flux through the aperture equals the galaxy flux + the sky flux. Hence to determine the galaxy flux you need to put an aperture on the sky background (where there is little or no galaxy light) and measure that.
Subjects Levels Resource Types
Astronomy
- Galaxies
- Upper Undergraduate
- Lower Undergraduate
- Instructional Material
= Activity
= Interactive Simulation
= Laboratory
Intended Users Formats Ratings
- Educators
- Learners
- application/java
- text/html
- video/mpeg
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Access Rights:
Free access
Restriction:
Has a copyright or other licensing restriction.
Keywords:
activity, flux, galaxies, galaxy, photometry
Record Creator:
Metadata instance created June 15, 2005 by Patricia Monahan
Record Updated:
August 17, 2005 by Marc Gagne
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
University of Oregon Physics Department, , WWW Document, (http://zebu.uoregon.edu/nsf/flux.html).
AJP/PRST-PER
University of Oregon Physics Department, Galaxy Photometry, , <http://zebu.uoregon.edu/nsf/flux.html>.
APA Format
University of Oregon Physics Department. (n.d.). Galaxy Photometry. Retrieved December 18, 2017, from http://zebu.uoregon.edu/nsf/flux.html
Chicago Format
University of Oregon Physics Department. Galaxy Photometry. http://zebu.uoregon.edu/nsf/flux.html (accessed 18 December 2017).
MLA Format
University of Oregon Physics Department. Galaxy Photometry. 18 Dec. 2017 <http://zebu.uoregon.edu/nsf/flux.html>.
BibTeX Export Format
@misc{ Author = "University of Oregon Physics Department", Title = {Galaxy Photometry}, Volume = {2017}, Number = {18 December 2017}, Year = {} }
Refer Export Format

%Q University of Oregon Physics Department
%T Galaxy Photometry
%U http://zebu.uoregon.edu/nsf/flux.html
%O application/java

EndNote Export Format

%0 Electronic Source
%A University of Oregon Physics Department,
%T Galaxy Photometry
%V 2017
%N 18 December 2017
%9 application/java
%U http://zebu.uoregon.edu/nsf/flux.html


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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.

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