MAPPING OF INFRARED HELIUM AND HYDROGEN LINE-PROFILES IN THE CENTRAL FEW ARCSECONDS OF THE GALAXY

被引：31

作者：

GEBALLE, TR

KRISCIUNAS, K

BAILEY, JA

WADE, R

机构：

[1] Joint Astronomy Centre, Hilo, HI 96720

来源：

ASTROPHYSICAL JOURNAL | 1991年 / 370卷 / 02期

关键词：

GALAXIES; INTERNAL MOTIONS; NUCLEI; THE GALAXY; INFRARED; SPECTRA; LINE PROFILES;

D O I：

10.1086/185980

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Spectra of the helium 2.06-mu-m and hydrogen 2.17-mu-m lines, which were obtained on a grid of positions in the Sgr A*/IRS 16 region of the Galactic center, confirm the existence of an extended region of high-velocity redshifted line emission centered near these object. Relative to the rest of the Galactic center, the ionization state of this region appears to be high, as does the ionization state of some lower velocity gas in the vicinity of IRS 16NE. Important sources of ionizing UV radiation probably are located close to these two clouds.

引用

页码：L73 / L76

页数：4

共 47 条

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