Variable Unidentified Emission near 6307 Å in η Carinae | Zendy

John C. Martin | Zendy; Kris Davidson | Zendy; Fred Hamann | Zendy; O. Stahl | Zendy; K. Weis | Zendy

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Variable Unidentified Emission near 6307 Å in η Carinae

Author(s) -

John C. Martin,

Kris Davidson,

Fred Hamann,

O. Stahl,

K. Weis

Publication year - 2006

Publication title -

publications of the astronomical society of the pacific

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.294

H-Index - 172

eISSN - 1538-3873

pISSN - 0004-6280

DOI - 10.1086/503877

Subject(s) - astrophysics , physics , feature (linguistics) , variable star , variable (mathematics) , star (game theory) , emission spectrum , astronomy , spectrum (functional analysis) , spectral line , stars , mathematics , philosophy , linguistics , mathematical analysis , quantum mechanics

We have discovered a conspicuous unidentified variable feature near 6307 AAin the spectrum of Eta Carinae which is spatially unresolved from the centralstar and its wind (r < 200--300 AU). It is significant for two reasons: suchprominent unidentified lines are now rare in this object, and this featurevaries strongly and systematically. It exhibits a combination ofcharacteristics which, so far as we know are unique in Eta Carinae's spectrum.It may provide insights into the recurrent spectroscopic events and the star'slong-term brightening.Comment: 22 pages, 7 Figures, 3 Tables; Accepted PASP, appearing May 200

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