MOLECULAR ABUNDANCES IN THE SAGITTARIUS-A MOLECULAR CLOUD

被引：0
|
作者：
MINH, YC
IRVINE, WM
FRIBERG, P
机构：
[1] UNIV MASSACHUSETTS, DEPT PHYS & ASTRON, AMHERST, MA 01003 USA
[2] UNIV MASSACHUSETTS, FIVE COLL RADIO ASTRON OBSERV, AMHERST, MA 01003 USA
[3] ONSALA SPACE OBSERV, S-43900 ONSALA, SWEDEN
[4] JOINT ASTRON CTR, HILO, HI 96720 USA
来源：
ASTRONOMY & ASTROPHYSICS | 1992年 / 258卷 / 02期
关键词：
GALAXY; CENTER; INTERSTELLAR; ABUNDANCE; CLOUDS; MOLECULES;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have obtained column densities for HCO+, HCO, HCS+, C3H2, HC5N, SiO, OCS, HCOOH, CH3CH2OH, and CH3CCH toward Sgr A. The fractional abundance of SiO relative to molecular hydrogen in Sgr A is comparable to that for the Orion plateau, approximately 10(-7)-10(-8), which may be a typical value for hot clouds. The abundances of HCO, CH3CH2OH and CH3CCH all appear to be enhanced relative to other molecular clouds such as Sgr B2.
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页码：489 / 494
页数：6
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