Technetium Star
Star, Stellar Classification, Radioactive Decay
978-613-7-81394-2
6137813940
152
2011-12-09
45.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A Technetium star, or more properly a Tc-rich star, is a star whose stellar spectrum contains absorption lines of the light radioactive metal technetium. The most stable isotope of technetium is 98Tc with a half-life of 4.2 million years, which is too short a time to allow the metal to be material from before the star's creation. Therefore, the detection in 1952 of technetium in stellar spectra provided unambiguous proof of nucleosynthesis in stars, one of the more extreme cases being R Geminorum.
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