INTERSTELLAR ABSORPTION-LINES IN THE GALAXY NGC-1705

被引:29
作者
YORK, DG
CAULET, A
RYBSKI, P
GALLAGHER, J
BLADES, JC
MORTON, DC
WAMSTEKER, W
机构
[1] UNIV CHICAGO,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637
[2] LOWELL OBSERV,FLAGSTAFF,AZ 86001
[3] SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218
[4] NATL RES COUNCIL CANADA,HERZBERG INST ASTROPHYS,OTTAWA K1A 0R6,ONTARIO,CANADA
[5] EUROPEAN SPACE AGCY,F-75738 PARIS 15,FRANCE
关键词
Galaxies: individual (NGC 1705); Galaxies: interstellar matter; Ultraviolet: spectra;
D O I
10.1086/168476
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The possibility is considered, and shown to be plausible, that the strong C iv and Si iv absorption lines in low-resolution ultraviolet spectra of gas-rich dwarf galaxies are primarily interstellar, not stellar as has been supposed. The argument is based on analogies with H II regions in the Local Group, on low-resolution equivalent width measurements of gas-rich dwarf galaxies from the literature and on high-resolution UV spectra of NGC 1705.
引用
收藏
页码:412 / 417
页数:6
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