Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211

Details Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211 Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211

2006-08-04

arxiv.org/abs/astro-ph/0608105v1

Astronomy and Astrophysics

Astrophysics

accepted in A&A

Scientific paper

10.1051/0004-6361:20065187

With the Plateau de Bure interferometer, we have measured the C, N, O and S isotopic abundance ratios in the arm of a spiral galaxy with a redshift of 0.89. The galaxy is seen face-on according to HST images. Its bulge intercepts the line of sight to the radio-loud quasar PKS 1830-211, giving rise at mm wavelengths to two Einstein images located each behind a spiral arm. The arms appear in absorption in the lines of several molecules, giving the opportunity to study the chemical composition of a galaxy only a few Gyr old. The isotopic ratios in this spiral galaxy differ markedly from those observed in the Milky Way. The $^{17}$O/$^{18}$O and $^{14}$N/$^{15}$N ratios are low, as one would expect from an object too young to let low mass stars play a major role in the regeneration of the gas.

Affiliated with

Also associated with

No associations

Rating

Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211 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 Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-49708