VLA IMAGING OF EXTRAGALACTIC AMMONIA - HOT GAS IN THE NUCLEUS OF IC-342

被引：32

作者：

HO, PTP

MARTIN, RN

TURNER, JL

JACKSON, JM

机构：

[1] MAX PLANCK INST EXTRATERRESTR PHYS,W-8046 GARCHING,GERMANY

[2] UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721

[3] UNIV CALIF LOS ANGELES,DEPT ASTRON,LOS ANGELES,CA 90024

来源：

ASTROPHYSICAL JOURNAL | 1990年 / 355卷 / 01期

关键词：

Galaxies: nuclei; Interstellar: molecules; Radio sources: spectra;

D O I：

10.1086/185728

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Extragalactic NH3 is successfully imaged with 5″ resolution using the VLA. Essentially all the single-dish flux is recovered in the interferometer maps. The hot gas (≳ 70 K), inferred from single-dish NH3 line intensity ratios, appears to be closely associated with the innermost portions of the nuclear bar seen in CO. Small-scale anticorrelation of the NH3 emission with the central thermal radio continuum emission is likely to be due to heating and photoionization effects.

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页码：L19 / L22

页数：4

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