Selective enhancement of barium in the atmospheres of red giants

Details Selective enhancement of barium in the atmospheres of red giants Selective enhancement of barium in the atmospheres of red giants

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...132l...5h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 132, no. 2, March 1984, p. L5-L7. Sponsorship: Deutsche Forschungsgemeinschaft

Astronomy and Astrophysics

Astrophysics

11

Barium, Metallicity, Red Giant Stars, Stellar Atmospheres, Stellar Spectra, Augmentation, Infrared Spectra, Late Stars, Nuclear Fusion

Scientific paper

High-resolution spectroscopy of 13 bright red giants and Ba stars shows selective enhancement of Ba in three of them, HD 65699 (Ba 2), α TrA (K4 III), and ɛ Peg (K2 Ib). Infrared spectra available for HD 65699 show that Sr is enhanced, too. This selective enhancement is discussed in terms of a modified s-process which converts some of the pre-existing r- and s-process matter into the magic nuclei 88Sr and 138Ba.

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