Casassus, S;
Storey, PJ;
Barlow, MJ;
Roche, PF;
(2005)
Hyperfine splitting of [Al VI] 3.66 mu m and the Al isotopic ratio.
In: Szczerba, R and Stasinska, G and Gorny, SK, (eds.)
PLANETARY NEBULAE AS ASTRONOMICAL TOOLS: International Conference on Planetary Nebulae as Astronomical Tools.
(pp. p. 152).
AIP Publishing: Gdansk (Poland).
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Abstract
Spectra of [Al VI] 3.66 μm 3P2 ←3P1 in the coronal region of PN NGC 6302, obtained with Phoenix on Gemini‐South at resolving powers of up to 75000, resolve the line into five hyperfine components separated by 20 to 60 km s−1 due to the coupling of the I = 5/2 nuclear spin of 27Al with the total electronic angular momentum J. 26Al has a different nuclear spin of I = 5, and a different hyperfine structure (HFS), which allows us to place a 3 σ upper limit on the 26Al/27Al ratio of 1/33. We measure the HFS magnetic‐dipole coupling constants for [Al VI], and provide the first observational estimates of atomic electric‐quadrupole HFS coupling constants.
| Type: | Proceedings paper |
|---|---|
| Title: | Hyperfine splitting of [Al VI] 3.66 mu m and the Al isotopic ratio |
| Event: | International Conference on Planetary Nebulae as Astronomical Tools |
| Location: | Gdansk, POLAND |
| Dates: | 28 June 2005 - 02 July 2005 |
| ISBN: | 0-7354-0294-9 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.2146254 |
| Publisher version: | https://doi.org/10.1063/1.2146254 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, atomic data, atomic processes, line : identification, line : profiles, ISM : abundances, platenary nebulae : individual : NGC 6302 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10096466 |
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