What can be Determined from Colour-Colour Diagrams?


by Ricky116
Tags: colourcolour, determined, diagrams
Ricky116
Ricky116 is offline
#1
Feb13-12, 10:39 PM
P: 8
Hi,

I have a colour-colour (that is, V-R against B-V) diagram of a young open cluster, and I was wondering if anyone has any suggestions on any information that can be gleaned from such a diagram? I have searched the internet and these forums to no real avail.

There is a clear linear line through the diagram with many stars on either side, perhaps there is a standard V-R/B-V correlation my observations can be compared against? Would it make sense to compare my diagram with that found from Landolt's data: http://brucegary.net/photometry/V-R.htm ?

If anyone could help me begin to interpret the diagram, or provide me with a link to actual practical analysis I could utilise it would be much appreciated.

Thanks.
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Radrook
Radrook is offline
#2
Feb21-12, 09:16 PM
P: 334
Here are some links that might prove useful.


Interpretation of the colour-colour diagram of M92
http://adsabs.harvard.edu/full/1970MNRAS.149..179B

Color-Color Analysis of GLIMPSE Point Sources

http://www.astro.wisc.edu/~daniel/


Color Magnitude Diagram of Cluster M67 -
http://astronomyonline.org/Astrophot...CMDDiagram.asp


COLOR-MAGNITUDE DIAGRAMS
ANALYSIS
Color-color and color-magnitude diagrams were analyzed
with the help of a software....

http://www.astro.iag.usp.br/~iaus266...ta-Caetano.pdf
vociferous
vociferous is offline
#3
Feb25-12, 03:13 PM
P: 256
You can compare them to stellar models as well as other clusters. One thing that you might be able to estimate from them is metalicity and other factors that affect the star's effective temperature. If you plot an idea blackbody on the diagram you can see how and where the temperature differs.

Ricky116
Ricky116 is offline
#4
Mar5-12, 08:32 PM
P: 8

What can be Determined from Colour-Colour Diagrams?


Thankyou very much, Radrook and vociferous.


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