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Old August 24th 07, 09:06 AM posted to sci.astro.research
PoorRichard
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Posts: 6
Default Luminosity Functions

"Phillip Helbig---remove CLOTHES to reply"
wrote in message ...

Are you interested in the number of objects of a given absolute
luminosity per volume, or the number of objects of a given apparent
magnitude per redshift interval? This doesn't really matter since the
conversion is trivial at these redshifts, but it might simplify the
discussion.


Hello. Good question. The former is what I am after. I have been playing
around with logarithmic bins of width delta_L = 10^.4 (one so-called "radio
magnitude").

Important questions: what is the actual problem you are workin on? How
large is the data set? What are the selection criteria and how complete
is the sample?


As described above, I compiled from the literature a list of all known
objects, of the type, in a region of the sky that was covered by a
particular survey. n ~ 100. I am interested in the various radio statistics
of a sample of the objects, at the wavelength of the survey. As for the
completeness of the sample, that is a good question. For one thing, I
restricted z 0.03. How might I further test such a sample for
completeness?

tia