Early stellar spectral classifications followed an alphabetical system based on hydrogen line strength, initially lacking a consistent temperature-based organization. Angelo Secchi's 1866 ...
This is a preview. Log in through your library . Abstract Some recent developments in the optical classification of OB spectra are reviewed in terms of a comprehensive atlas of new blue-violet digital ...
Annie Jump Cannon was a female astronomer best known for coming up with the current system of stellar classification. Her system — ranking stars as O, B, A, F, G, K or M, with "O" being the hottest ...
This is a preview. Log in through your library . Journal Information Current issues are now on the Chicago Journals website. Read the latest issue. Since its inception in 1912, Isis has featured ...
Orange dwarf stars stand the best chance of harboring intelligent life like our own, say the co-authors of a new paper appearing in The Astrophysical Journal. The sweet spot for planets suitable for ...
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