Stellar deuterium abundance - A new upper limite in Canopus

Details Stellar deuterium abundance - A new upper limite in Canopus Stellar deuterium abundance - A new upper limite in Canopus

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...124..172f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 124, no. 2, Aug. 1983, p. 172-174.

Astronomy and Astrophysics

Astrophysics

5

Abundance, Deuterium, Interstellar Gas, Stellar Evolution, Stellar Spectra, Supergiant Stars, Nuclear Fusion

Scientific paper

Canopus is a supergiant star, with a mass near 10 M_sun;, which could have retained its original deuterium during contraction to the main sequence. From high resolution, high signal to noise ratio observations of Hα, a new upper limit for the D/H ratio of 5×10-7 by number has been obtained. This upper limit is below the lowest observed ratio in the interstellar medium showing the depletion effect on the initial deuterium abundance by stellar evolution.

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