Confirmation of high deuterium abundance in QSO absorbers

Details Confirmation of high deuterium abundance in QSO absorbers Confirmation of high deuterium abundance in QSO absorbers

1995-12-01

arxiv.org/abs/astro-ph/9512004v2

Astrophys.J.459:L1-L4,1996

Astronomy and Astrophysics

Astrophysics

15 pages, AAS Latex, final version, to appear in ApJ Letters

Scientific paper

10.1086/309931

We present a new analysis of a Keck spectrum of Q0014+813, with a new model of the $z=3.32$ absorbing cloud. We fit Lyman series absorption of the dominant HI components, including components identified with hydrogen and associated deuterium at two discrete velocities, with thermal line broadening of each species. The deuterium features are too narrow to be interlopers, and the good agreement in temperature and redshift with their hydrogen counterparts confirms the identification as deuterium. The abundance is measured to be $D/H$ $ = 1.9 \pm 0.5$ and $1.9 \pm 0.4 \times 10^{-4}$ in the two components, with an independent lower limit of D/H $> 1.3 \times 10^{-4}$ for the sum, derived from the Lyman Limit opacity. The impact on cosmological theory is briefly discussed.

Affiliated with

Also associated with

No associations

Rating

Confirmation of high deuterium abundance in QSO absorbers 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 Confirmation of high deuterium abundance in QSO absorbers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Confirmation of high deuterium abundance in QSO absorbers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-10496