Sr II and [Sr II] Emission in the Ejecta of eta Carinae
Författare
Summary, in English
We have discovered four extremely surprising emission lines of strontiumin ejecta near eta Carinae. Hubble Space Telescope (HST) SpaceTelescope Imaging Spectrograph (STIS) observations made in 1999 show twonarrow features whose wavelengths correspond to the forbiddentransitions of Sr II, and we have found no other plausibleidentification for these lines. The identifications are confirmed by newHST/STIS observations of the same stellar position, in which the Sr IIresonance lines are observed. Moreover, [Ti II, [Ni II, [Mn II, and[Co II lines are unusually strong relative to [Fe II at the sameposition. Based on observations made with the NASA/ESA Hubble SpaceTelescope and supported by STIS IDT GTO 8036 and grant GO 8327 from theSpace Telescope Science Institute. The STScI is operated by theAssociation of Universities for Research in Astronomy, Inc., under NASAcontract NAS 5-26555.
Avdelning/ar
Publiceringsår
2001
Språk
Engelska
Sidor
322-326
Publikation/Tidskrift/Serie
The Astronomical Journal
Volym
122
Issue
1
Fulltext
- Available as PDF - 330 kB
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Dokumenttyp
Artikel i tidskrift
Förlag
IOP Publishing
Ämne
- Astronomy, Astrophysics and Cosmology
Nyckelord
- Stars: Circumstellar Matter
- stars: individual (eta Carinae)
- Stars: Variables: Other
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1538-3881