Need data for galactic rotation curves

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  • Thread starter Thread starter Buckethead
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SUMMARY

The discussion focuses on the need for data on galactic rotation curves, specifically both observed and expected (Keplerian) velocity data for local spiral galaxies. The user seeks accessible sources that provide raw data including radius, observed velocity, and expected velocity. They have encountered difficulties navigating the NED website due to its complexity. The request emphasizes the importance of finding user-friendly data sources for hobbyists interested in astrophysics.

PREREQUISITES
  • Understanding of galactic rotation curves
  • Familiarity with Keplerian dynamics
  • Basic spreadsheet software skills
  • Knowledge of data formats used in astrophysics
NEXT STEPS
  • Research data repositories for galactic rotation curves, such as NASA's NED or SDSS
  • Learn how to interpret Keplerian velocity curves in astrophysical contexts
  • Explore tools for data visualization in astrophysics, like Python with Matplotlib
  • Investigate community forums or groups focused on amateur astronomy data analysis
USEFUL FOR

This discussion is beneficial for amateur astronomers, astrophysics hobbyists, and anyone interested in analyzing galactic dynamics through observational data.

Buckethead
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I'm looking for sources of data for galactic rotation curves but need not only the observed rotation curves but also the expected (Keplerian) curve data to load into a spreadsheet to experiment with. After extensive searching I found a few pockets of data for observed velocities but not for expected velocities. I tried going through the NED website but the format is over my head. (I'm just a hobbyist not a researcher). So if anyone can point me to a site that shows raw data for 1) radius, 2) observed velocity, 3) expected velocity for some popular local spiral galaxies it would be very much appreciated.
 
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Can anyone help with this or guide me toward finding someone that can help with this? Thanks!
 

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