THE INTERSTELLAR-C-12/C-13 RATIO TOWARD MU-NORMAE

被引：5

作者：

CRANE, P

LAMBERT, DL

PALAZZI, E

机构：

[1] EUROPEAN SO OBSERV,MUNICH,GERMANY

[2] UNIV TEXAS,DEPT ASTRON,AUSTIN,TX 78712

[3] CNR,INST TESRE,I-40126 BOLOGNA,ITALY

来源：

ASTROPHYSICAL JOURNAL | 1990年 / 363卷 / 01期

关键词：

Interstellar: abundances; Interstellar: molecules; Stars:; individual; (HD; 149038; mu Normae);

D O I：

10.1086/169329

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The interstellar 12C/13C ratio has been determined toward μ Normae. The absorption features of the molecular ions 12CH+ and 13CH+ have been measured at 4232 Å and at 3957 Å. The equivalent widths of the 12CH+ lines are 26.988 ± 0.108 mÅ at 4232 Å and 15.561 ± 0.250 mÅ at 3957 Å. The corresponding values for 13CH+ are 0.556 ± 0.062 mÅ and 0.202 ± 0.171 mÅ. The isotopic abundance ratio was determined to be 12C/13C = 56.9 ± 6.4.

引用

页码：192 / 196

页数：5

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