Lifetime Measurements for Ground Term Transitions in TA II, W II, and RE II

Details Lifetime Measurements for Ground Term Transitions in TA II, W II, and RE II Lifetime Measurements for Ground Term Transitions in TA II, W II, and RE II

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...520..805h&link_type=abstract

The Astrophysical Journal, Volume 520, Issue 2, pp. 805-810.

Astronomy and Astrophysics

Astronomy

14

Atomic Data, Stars: Abundances, Stars: Individual (Sirius B, Chi Lupi), Stars: Peculiar, Ultraviolet: Stars

Scientific paper

Lifetime measurements have been made for the radiation emitted in the ground term transitions of the nominal form 5s^25p^65d^x6s-5s^25p^65d^x6p in Ta II (x=3), W II (x=4), and Re II (x=5). Supporting theoretical calculations have also been performed to characterize configuration interaction and to estimate the degree of decay branching of the upper levels. The lifetime measurements have been combined with these theoretical considerations and with branching fractions deduced from the emission measurements of Corliss & Bozman to specify the oscillator strengths of these transitions. The results are discussed in the context of spectroscopic data obtained from orbiting telescopes and applied to Hubble Space Telescope spectra to estimate the tungsten abundance in Sirius.

Affiliated with

Also associated with

No associations

Rating

Lifetime Measurements for Ground Term Transitions in TA II, W II, and RE II does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Lifetime Measurements for Ground Term Transitions in TA II, W II, and RE II, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lifetime Measurements for Ground Term Transitions in TA II, W II, and RE II will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1456121