Deuterium measurements toward WD1034+001, BD+393226, and TD1 32709

Details Deuterium measurements toward WD1034+001, BD+393226, and TD1 32709 Deuterium measurements toward WD1034+001, BD+393226, and TD1 32709

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.5703o&link_type=abstract

American Astronomical Society Meeting 205, #57.03; Bulletin of the American Astronomical Society, Vol. 36, p.1436

Astronomy and Astrophysics

Astronomy

Scientific paper

Observations of the D/H ratio in the interstellar medium provide important constraints on Galactic chemical evolution models as well as on the Big Bang nucleosynthesis theory. The behavior of the D/H ratio in the interstellar medium is far from being well understood. D/H seems to have a single value inside the Local Bubble (logN(DI) < 14.5). However, beyond 100 pc there is a wide range of D/H values which are inconsistent with the Local Bubble value.
In order to increase the number of measurements that will allow us to understand this behavior, we present a preliminary analysis of three sightlines located outside the Local Bubble. All three sightlines have log N(DI) > 15. We use data obtained with FUSE, IUE, and HST/GHRS to determine the column densities of many species, including H I, D I, N I, O I, and H2. We derive D/H, N/H, O/H, and D/O ratios which are then compared to values published in the literature.
This work is based on data obtained for the Guaranteed Time Team by the NASA-CNES-CSA FUSE mission operated by The Johns Hopkins University. Financial support to U. S. participants has been provided in part by NASA contract NAS5-32985 to Johns Hopkins University.

Affiliated with

Also associated with

No associations

Rating

Deuterium measurements toward WD1034+001, BD+393226, and TD1 32709 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 Deuterium measurements toward WD1034+001, BD+393226, and TD1 32709, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deuterium measurements toward WD1034+001, BD+393226, and TD1 32709 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1638865