Quote:
Originally Posted by sjastro
You are a great source of information.
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When it comes to the source of the information I supply in these fora,
one important source is my large personal library of books (paper-based, not electronic) on topics relevant to galaxies (observational techniques, star formation, ISM, galactic dynamics, galaxy morphology, stellar evolution, stellar populations, etc), and I make a habit of collecting astrononomy books which are likely to be useful for reference;
this costly paper-based 'intranet' contains a lot more astronomy books than I strictly need, but it gives me a "quick and dirty" answer to most every question about astronomy......
In many circumstances, this can be a more efficient and detailed method of information gathering than the internet.
[ Most 'explanations' on the internet seem very shallow, with the exception of the primary literature (papers) ]
I am still cogitating in respect of UV scattering.
I have a nice quotation from Draine about the observables that constrain theories about dust grains, which I shall shortly submit in answer to Dana's query about how theoretical is the field of dust-grain modelling.
cheers,
Robert
In general, I mainly tend to have a very practical need for quick 'rules of thumb' to estimate the values of extinction along various sight-lines 'drawn' in our own Galaxy and in other galaxies; but your comments about extinction are having the effect of making me look deeper at the issues!