2005A&A...436.1131H


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.18CEST21:57:17

2005A&A...436.1131H - Astronomy and Astrophysics, volume 436, 1131-1139 (2005/6-4)

Fine structure effective collision strengths for the electron impact excitation of Al III.

HUDSON C.E. and BELL K.L.

Abstract (from CDS):

A 10-state R-matrix calculation has been carried out to generate fine structure effective collision strengths for the electron impact excitation of doubly ionized aluminium. The target states are represented by configuration interaction wavefunctions and consist of the 10 lowest LS states - (2p6)3s, 3p, ..., 5p, 5d. These 10 target states give rise to 17 fine structure levels and 136 possible transitions. The fine structure collision strengths were obtained by transforming to a jj-coupling scheme using the JAJOM program of Saraph and have been determined at a sufficiently fine energy mesh to delineate properly the resonance structure. The effective collision strengths were calculated by averaging the electron collision strengths over a Maxwellian distribution of velocities. Tabulations of the non-zero effective collision strengths for transitions between both the LS states and the fine structure levels are given for electron temperatures (Te) in the range log10Te(K)=3.6-5.6. Comparisons are made with previous calculations and we find good agreement with the work of Kimura et al. (1998A&AS..132...99K).

Abstract Copyright:

Journal keyword(s): atomic processes - line: formation - methods: analytical

VizieR on-line data: <Available at CDS (J/A+A/436/1131): table7.dat j-index.dat>

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 Mrk 1502 Sy1 00 53 34.9326560879 +12 41 35.927159668   14.41 14.03     ~ 1006 1
2 QSO J0840+3633 QSO 08 40 44.4182880555 +36 33 27.831948193   17.51 16.98     ~ 56 0
3 V* GP Vel HXB 09 02 06.8610736194 -40 33 16.896402010 6.85 7.37 6.87 6.31 6.05 B0.5Ia 1351 0
4 QSO J2246-6015 QSO 22 47 08.9261267635 -60 15 45.301367673           ~ 55 0

    Equat.    Gal    SGal    Ecl

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2019.10.18-21:57:17

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