NO Aurigae, Kartoniert / Broschiert

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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 star with spectral type S is a late-type giant star (similar to class K5-M) whose spectrum displays bands from zirconium oxide in addition to titanium oxide which is characteristically exhibited by K and M class giant stars. Other s-process elements, for example yttrium oxide and technetium, are also enhanced, clearly indicating neutron capture elements in the period 5 in the periodic system of chemical elements. It may also have features from cyanogen, lithium. Most of these stars are long-period variables.