|DR7 Stripe 82 Projects|
|- The Milky Way|
|- Small Galaxies|
|- Quasar Spectra|
|- Map the Universe|
|- HII Regions|
|Games and Contests|
|Links to Others|
Galaxies come in two major types: spiral and elliptical. But some galaxies are so small and faint that it's hard to tell what type they are. How can you classify these small, faint galaxies?
Things you might think about
Tools that might help you (all links open in new windows)
Navigate: use this tool to get data on single galaxies
Image List: use this tool to get thumbnail images of galaxies that meet your search criteria
SQL Search: use this tool to write complex Structured Query Language (SQL) searches for galaxies
Science background (new windows)
Galaxy Zoo (a project where you can classify galaxies)
Classifying Messier galaxies (from the Students for the Exploration and Development of Space)
Hints and cautions (new windows)
If you look at spectra, study the line labels carefully. Not all of them are element names!
You can use SQL aggregate functions (like avg, min, max) to do your analysis.
Look at the data points for "petroR50_g" and "petroR90_r" in the Galaxy table in the Schema Browser. What do those terms mean?