The Genesis of Barium in Early Galactic History

Details The Genesis of Barium in Early Galactic History The Genesis of Barium in Early Galactic History

Feb 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop...45p&link_type=abstract

NOAO Proposal ID #2000A-0045

Computer Science

Scientific paper

Two observational tests allow confirmation of the r-process origin of the traditional s-process elements in metal-poor stars. The first test is the comparison of the pattern of heavy element abundances in metal-poor stars with the patterns of s- and r-process elements observed in the Sun. A second observational test is the direct determination of the isotopic mix of Ba from the profile of the Ba II (lambda)4554 resonance line, establishing whether the Ba is produced by the r-process or the s-process. We propose to obtain a very high resolution and signal-to-noise ratio spectrum of the very metal-poor giant HD 122563 with camera 6 on the coude feed telescope to determine its Ba isotope distribution. If s-process elements are present, then either stars of very low metallicity continued to form well after the initial rise of the iron abundance in the Galaxy or an additional site of s-process nucleosynthesis which can occur on short evolutionary timescales will be needed to account for these elements.

Affiliated with

Also associated with

No associations

Rating

The Genesis of Barium in Early Galactic History 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 The Genesis of Barium in Early Galactic History, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Genesis of Barium in Early Galactic History will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1800362