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Wow, thanks Les! A font of knowledge. I shall certainly look for Omicron2 Eridani when I get the chance, it sounds like a rather interesting system. I have looked for Sirius B a couple of times, but have yet to get more than a very slight (and possibly imagined) hint.
A couple of questions to follow up:
1) Is there a good source for answering this type of question, or is it a matter of experience?
2) I guess it must be close to 20 years since I read up on stellar evolution (H-R diagrams and the like), and knowledge must have changed a fair bit since then. Does anyone have a good book they can recommend?
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