V-I Color Index and Astronomical Catalog

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  • Thread starter Thread starter GleefulNihilism
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SUMMARY

The discussion centers on the V-I color index and its significance in astronomical observations. The user mistakenly associates the star Vega with a 0.0 value in the V-I color index, clarifying that it actually pertains to the B-V color index. For those seeking raw data on V-I color index values for spiral galaxies, the conversation highlights the importance of consulting research papers by Mike Bessell and Cousins, who contributed significantly to the standardization of photometric systems.

PREREQUISITES
  • Understanding of V-I and B-V color indices in astronomy
  • Familiarity with photometric systems and their standardization
  • Knowledge of astronomical data sources, particularly ADS Abstract Service
  • Basic research skills for locating academic papers
NEXT STEPS
  • Research Mike Bessell's contributions to photometric systems
  • Explore Cousins' papers from the late 1970s and early 1980s
  • Learn how to access and utilize the ADS Abstract Service for astronomical research
  • Investigate the significance of color indices in classifying spiral galaxies
USEFUL FOR

Astronomers, astrophysics students, and researchers interested in photometric systems and the classification of celestial objects.

GleefulNihilism
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Well, this is awkward.

I seem to have forgotten what star has a 0.0 value in the V-I color index. I almost want to say Vega but that's the 0.0 in the B-V color index.

I also seem unable to find raw data for the V-I color index values for spiral galaxies and was wondering if someone would be willing to assist.


If you have any questions, feel free to post. I also wanted to start a conversation in posting.
 
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I think your best bet would be to search for papers by Mike Bessell on http://adsabs.harvard.edu/abstract_service.html" abstract server. He was a pioneer in standardising photometric systems. Failing that, try looking for papers by Cousins from the late 70/early 80s.
 
Last edited by a moderator:
I would totally kid you for giving a responce that didn't lend itself to discussion, but I lost this link months ago and had been looking for it.

I wish I could give high fives/respect knuckles over the internet.
 
Last edited:

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