Exploring the Milky Way Disk Abundance Transition Zone Rgc 10 kpc with Open Clusters

Details Exploring the Milky Way Disk Abundance Transition Zone Rgc 10 kpc with Open Clusters Exploring the Milky Way Disk Abundance Transition Zone Rgc 10 kpc with Open Clusters

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21344221j&link_type=abstract

American Astronomical Society, AAS Meeting #213, #442.21; Bulletin of the American Astronomical Society, Vol. 41, p.322

Other

Scientific paper

Recent studies of the radial chemical abundance distribution among stellar populations in the Galactic disk have shown a change in the abundance trend at galactocentric distance Rgc 10 kpc, as first noted by Twarog et al. (1997). Here the gradient in [Fe/H] with distance appears to vanish, with abundances of stars at greater distances dropping to [Fe/H] -0.3, independent of galactocentric distance. Much is still unknown about the exact nature of the transition from inner to outer disk, and it is still uncertain if the outer disk has had a distinct evolutionary history from that of the inner disk. While current chemical evolution models can well match the outer disk abundances (Cescutti et al. 2007), abundances of many more stars at Rgc 9-12 kpc must be determined to better characterize the nature of the transition from inner to outer disk. We have initiated a survey of abundances of 20 open clusters in this region using spectroscopy obtained with the WIYN, KPNO 4m, CTIO 4m and Hobby-Eberly telescopes. Chemical abundances are determined for Fe, O, Na, and alpha-elements, among others. Results for the survey to date are presented here.

Affiliated with

Also associated with

No associations

Rating

Exploring the Milky Way Disk Abundance Transition Zone Rgc 10 kpc with Open Clusters 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 Exploring the Milky Way Disk Abundance Transition Zone Rgc 10 kpc with Open Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exploring the Milky Way Disk Abundance Transition Zone Rgc 10 kpc with Open Clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1703800