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On the problem of selective enhancement of barium in the atmospheres of BaII stars (1996)

Mashonkina, L. I. ; Začs, L.

Springer

Astrophysics and space science 236 (1996), S. 185-199

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ISSN: 1572-946X

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract High-resolution spectroscopy and standard LTE analysis of 31 barium and normal red giants (Astron. Astrophys. 283, 1994, p. 937) shows a selective enhancement of Ba (∼+0.5 dex) in two stars. HR 3845 and HD 130386, relative to the standard star ε Vir. We do not overinterpret these enhancements due to possible errors in the equivalent widths or in the atmospheric parameters. The non-LTE analysis of BaII in the atmospheres of red (barium) giants shows that the corrections for the non-LTE effects is relatively small, reaching a maximum of −0.16 dex, therefore, the enhancement of barium had apparently another nature.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00645143

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