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Author Topic: Can I tell the colour of a star, if I have the u,g,r,i,z, colour index?  (Read 335 times)

Offline Equilibrium_E

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So I have the Colour spectral breakdown of a number of stars (sdss data) and I was hoping there was a technique or process I can conduct/run in order to tell the actual appearance (as it might seem to someone viewing them), as it might seem to an observer? an example of one of the lines/observations is:
ra                     dec                           u         g                  r         I                 z
2.111125647   -0.935711213   22.04581   21.63591   21.73088   21.47245   21.43542.

Anybody who as any kind of experience dealing with this data, I'd be genuinely delighted to hear from, or in fact,
anybody who as any thoughts at all on it!
Thanks in advance,
E_E


 

Offline yor_on

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I'm not sure you can?
Maybe, seems to be some conversions made?

The SDSS Data, processing the Data

Photometric Flux Calibration

And from that to Ugriz colors.

Potential colors for studying stellar
populations.


Transformations between SDSS magnitudes and UBVRcIc (and ugriz )

The u'g'r'i'z' Standard Star System:
==

As for how a star looks to the naked eye?
White, yellow, red I'm not really sure what you're after here?

This? SDSS Filters

Actually I think most stars would look 'white' to me, (except possibly red ones), in space outside a atmosphere? I'm not sure though?

« Last Edit: 01/11/2016 13:26:02 by yor_on »
 

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