Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.259..489f&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 259, no. 3, p. 489-493.
Astronomy and Astrophysics
Astronomy
42
Early Stars, Galactic Clusters, Interstellar Chemistry, Interstellar Gas, Nitrogen, Oxygen, Abundance, Cosmic Dust, Line Spectra
Scientific paper
We have used previously published observations of main-sequence B-type stars lying in 11 young stellar clusters and associations to estimate non-LTE abundances of oxygen and nitrogen over galactocentric distances in the Rg range of 6-13 kpc. An oxygen abundance gradient of -0.03 +/- 0.02 dex/kpc is found, agreeing with earlier preliminary findings from early-type stars. The smaller number of nitrogen abundance estimates precludes any similar conclusion. When compared with the gas-phase abundances as found from ultraviolet absorption-line studies, the data suggest depletions into grains of 0.28 +/- 0.13 dex for oxygen and 0.07 +/- 0.14 dex for nitrogen.
Dufton Philip L.
Fitzsimmons Alan
Rolleston William Robert J.
No associations
LandOfFree
A comparison of oxygen and nitrogen abundances in young clusters and associations and in the interstellar gas 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 A comparison of oxygen and nitrogen abundances in young clusters and associations and in the interstellar gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A comparison of oxygen and nitrogen abundances in young clusters and associations and in the interstellar gas will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1138946