On the Perils of Hyperfine Splitting: A reanalysis of Mn and Sc Abundance Trends

Details On the Perils of Hyperfine Splitting: A reanalysis of Mn and Sc Abundance Trends On the Perils of Hyperfine Splitting: A reanalysis of Mn and Sc Abundance Trends

2000-05-24

arxiv.org/abs/astro-ph/0005471v1

Astronomy and Astrophysics

Astrophysics

5 pages, 2 embedded figures. Uses emulateapj5.sty, onecolfloat.sty. Accepted to ApJ Letters (5/22/00)

Scientific paper

10.1086/312749

We investigate the impact of hyperfine splitting on stellar abundance analyses of Mn and Sc, and find that incorrect hfs treatment can lead to spurious abundance trends with metallicity. We estimate corrections to a recent study by Nissen et al. (2000), and find: (1) [Mn/Fe] is described by a bimodal distribution, with [Mn/Fe] ~ -0.3 for stars [Fe/H] < -0.7, and [Mn/Fe] ~ -0.05 for stars at higher metallicity, suggestive of a transition between halo/thick disk and thin disk populations. (2) The large majority of stars show nearly solar [Sc/Fe] ratios; although important deviations cannot be ruled-out.

Affiliated with

Also associated with

No associations

Rating

On the Perils of Hyperfine Splitting: A reanalysis of Mn and Sc Abundance Trends 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 On the Perils of Hyperfine Splitting: A reanalysis of Mn and Sc Abundance Trends, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Perils of Hyperfine Splitting: A reanalysis of Mn and Sc Abundance Trends will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-98345