I am doing photometry on a number of objects in a number of different galaxies. I need the extinction coefficients for these galaxies for various filters passes. Is there some database that displays extinction values for different galaxies at different filter passes?


closed as unclear what you're asking by Sir Cumference, called2voyage Oct 4 '16 at 17:42

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  • $\begingroup$ Unclear what you are asking. Extinction has two components, one through our own galaxy, and then extinction in the external galaxy. The first is likely similar for all objects in a single external galaxy, the second could vary (a lot if it's a spiral). $\endgroup$ – Rob Jeffries Oct 28 '15 at 9:06