Author | dc.contributor.author | Casassus Montero, Simón | es_CL |
Author | dc.contributor.author | Storey, P. J. | es_CL |
Author | dc.contributor.author | Barlow, M. J. | |
Author | dc.contributor.author | Roche, P. F. | es_CL |
Admission date | dc.date.accessioned | 2013-01-15T13:23:54Z | |
Available date | dc.date.available | 2013-01-15T13:23:54Z | |
Publication date | dc.date.issued | 2005-06-01 | |
Cita de ítem | dc.identifier.citation | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY Volume: 359 Issue: 4 Pages: 1386-1392 Published: JUN 1 2005 | es_CL |
Identifier | dc.identifier.issn | 0035-8711 | |
Identifier | dc.identifier.other | DOI: 10.1111/j.1365-2966.2005.08994.x | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/125742 | |
General note | dc.description | Artículo de publicación ISI | es_CL |
Abstract | dc.description.abstract | The core of planetary nebula NGC 6302 is filled with high-excitation photoionized gas at low expansion velocities. It represents a unique astrophysical situation in which to search for hyperfine structure (HFS) in coronal emission lines from highly ionized species. HFS is otherwise blended by thermal or velocity broadening. Spectra containing [Al vr] 3.66 mu m (3)P(2) <- (3)P(1), obtained with Phoenix on Gemini South at resolving powers of up to 75000, resolve the line into five hyperfine components separated by 20-60 km s(-1) as a result of the coupling of the I = 5/2 nuclear spin of (27)Al with the total electronic angular momentum J. The isotope (26)Al has a different nuclear spin of I = 5, and a different HFS, which allows us to place a 3 sigma upper limit on the (26)Al/(27)Al abundance ratio of 1/33. We measure the HFS magnetic dipole coupling constants for [Al vr], and provide the first estimates of the electric quadrupole HFS coupling constants obtained through astronomical observations of an atomic transition. | es_CL |
Lenguage | dc.language.iso | en | es_CL |
Publisher | dc.publisher | WILEY-BLACKWELL | es_CL |
Keywords | dc.subject | atomic processes | es_CL |
Título | dc.title | Hyperfine splitting of [Al VI] 3.66 mu m and the Al isotopic ratio in NGC 6302 | es_CL |
Document type | dc.type | Artículo de revista | |