Sodium enrichment of stellar atmospheres - I. Non-variable supergiants and bright giants

被引：24

作者：

Andrievsky, SM

Egorova, IA

Korotin, SA

Burnage, R

机构：

[1] Odessa II Mechnikov State Univ, Dept Astron, UA-65014 Odessa, Ukraine

[2] Univ Sao Paulo, Inst Astron & Geofis, BR-4200 Agua Funda, Brazil

[3] Odessa Astron Observ, Odessa, Ukraine

[4] Isaac newton Inst Chile, Odessa Branch, Odessa, Ukraine

[5] Observ Haute Provence, F-04870 St Michel lObserv, France

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 389卷 / 02期

关键词：

stars : abundances; stars : supergiants;

D O I：

10.1051/0004-6361:20020645

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

48 supergiants and bright giants have been observed in order to investigate the sodium enrichment of their atmospheres and its connection with stellar gravity. We present the equivalent widths of the 6154 Angstrom and 6160 Angstrom Na I lines measured from the program spectra, the results of effective temperature determinations, the NLTE sodium abundances, and the derived relation between the sodium overabundance and surface gravity.

引用

页码：519 / 523

页数：5

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