A SURVEY OF THE LARGE MAGELLANIC CLOUD IN THE [C II] 158 MICRON LINE

被引：57

作者：

MOCHIZUKI, K

NAKAGAWA, T

DOI, Y

YUI, YY

OKUDA, H

SHIBAI, H

YUI, M

NISHIMURA, T

LOW, FJ

机构：

[1] UNIV TOKYO,FAC SCI,DEPT ASTRON,HONGO 7-1-1,BUNKYO KU,TOKYO 113,JAPAN

[2] UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85724

来源：

ASTROPHYSICAL JOURNAL | 1994年 / 430卷 / 01期

关键词：

GALAXIES; IRREGULAR; ISM; INFRARED; LINES AND BANDS; CLOUDS; MAGELLANIC CLOUDS;

D O I：

10.1086/187432

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have mapped the Large Magellanic Cloud (the LMC) in the [C II] 158 mum fine-structure line with the Balloon-borne Infrared Carbon Explorer (BICE) system. The [C II] line emission was detected over most of the LMC. The mean [C II]/CO (J = 1-0) line intensity ratio was 23,000, 18 times larger than the typical value observed in the Galactic plane (1300). This result implies that each clump of the molecular clouds in the LMC has a larger C+ envelope relative to its CO core than those in our Galaxy. Lower dust abundance due to its lower metallicity allows UV photons, which convert CO molecules into C+ ions, to penetrate deeper into the clumps in the LMC than in our Galaxy.

引用

页码：L37 / L40

页数：4

共 29 条

[1] IONIZED CARBON IN THE LARGE MAGELLANIC CLOUD [J].

BOREIKO, RT ;

BETZ, AL .

ASTROPHYSICAL JOURNAL, 1991, 380 (01) :L27-L30

[2] A COMPLETE CO SURVEY OF THE LARGE MAGELLANIC CLOUD [J].

COHEN, RS ;

DAME, TM ;

GARAY, G ;

MONTANI, J ;

RUBIO, M ;

THADDEUS, P .

ASTROPHYSICAL JOURNAL, 1988, 331 (02) :L95-L99

[3] A COMPOSITE CO SURVEY OF THE ENTIRE MILKY-WAY [J].

DAME, TM ;

UNGERECHTS, H ;

COHEN, RS ;

DEGEUS, EJ ;

GRENIER, IA ;

MAY, J ;

MURPHY, DC ;

NYMAN, LA ;

THADDEUS, P .

ASTROPHYSICAL JOURNAL, 1987, 322 (02) :706-&

[4]

Dufour R. J., 1984, IAU S, V108, P353

[5]

GIERENS KM, 1992, ASTRON ASTROPHYS, V259, P271

[6] IRAS OBSERVATIONS OF GALAXIES IN THE VIRGO CLUSTER AREA [J].

HELOU, G ;

KHAN, IR ;

MALEK, L ;

BOEHMER, L .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1988, 68 (02) :151-172

[7] STRESSED GE-GA PHOTOCONDUCTOR WITH A COMPACT AND STABLE STRESSING ASSEMBLY [J].

HIROMOTO, N ;

ITABE, T ;

ARUGA, T ;

OKUDA, H ;

MATSUHARA, H ;

SHIBAI, H ;

NAKAGAWA, T ;

SAITO, M .

INFRARED PHYSICS, 1989, 29 (2-4) :255-259

[8] LOW-DENSITY PHOTODISSOCIATION REGIONS [J].

HOLLENBACH, DJ ;

TAKAHASHI, T ;

TIELENS, AGGM .

ASTROPHYSICAL JOURNAL, 1991, 377 (01) :192-209

[9] OBSERVATIONS OF CO-12(J = 2-1) EMISSION IN THE LARGE AND SMALL MAGELLANIC CLOUDS [J].

ISRAEL, FP ;

DEGRAAUW, T ;

LIDHOLM, S ;

VANDESTADT, H ;

DEVRIES, C .

ASTROPHYSICAL JOURNAL, 1982, 262 (01) :100-109

[10] CARBON-MONOXIDE IN THE MAGELLANIC CLOUDS [J].

ISRAEL, FP ;

DEGRAAUW, T ;

VANDESTADT, H ;

DEVRIES, CP .

ASTROPHYSICAL JOURNAL, 1986, 303 (01) :186-197

← 1 2 3 →