The D/h Ratio in Water from Comet p/ Halley

Details The D/h Ratio in Water from Comet p/ Halley The D/h Ratio in Water from Comet p/ Halley

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...187..435e&link_type=abstract

Astronomy and Astrophysics, Vol.187, NO. 1+2/NOV, P. 435, 1987

Astronomy and Astrophysics

Astrophysics

41

Scientific paper

The neutral gas mass spectrometer on the Giotto spacecraft made neutral and ion composition measurements with a high mass resolution. From a preliminary evaluation of the ion data within the contact surface the authors obtain for the water in Halley an 18O abundance of 18O/16O = 0.0023±0.0006 and for the D/H ratio 0.6×10-4 ≤ D/H ≤ 4.8×10-4. The cometary 18O abundance is within error limits identical to the terrestrial one. The D/H ratio in Halley is definitely not compatible with the D/H in gaseous hydrogen of the protosolar nebula or the Jovian and Saturnian atmospheres. It is in the range observed for hydrogen in solar system objects which acquired their hydrogen as part of volatile molecules, e.g. as ices.

Affiliated with

Also associated with

No associations

Rating

The D/h Ratio in Water from Comet p/ Halley 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 D/h Ratio in Water from Comet p/ Halley, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The D/h Ratio in Water from Comet p/ Halley will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1712675