412 papers found
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Large, highly organized radio structures near the galactic centre
The three-dimensional structure of a circumstellar maser
Molecular clouds in galaxies
from which the material is extracted is in the range 1014—1015 cm”. If this hypothesis is applicable
Hot ammonia in Orion
Molecular clouds in Orion and Monoceros
Maser emission from H3O is also present in OH231. 8+ 4.2 (Morris and Knapp 1976; Genzel and Downes 1977). However, the narrow H3O line is weak and does
Astronomy Department, Columbia University
Molecular emission from expanding envelopes around evolved stars. III-Thermal and maser CO emission
On C4H versus vibrationally excited CO in IRC+ 10216
Molecular emission from expanding envelopes around evolved stars. II-SiO-On the mechanism of mass loss and the efficiency of grain formation
Disk structure in protostellar H2O maser sources
emission was detected in two: IC 342 and NGC 6946. Partial mapping of these nearly face-on galaxies shows that the CO emission peaks sharply at the nuclei but is present at a detectable level over most of the disks out to 8—10 kpc.
Emission from highly excited rotational states of HC3N in dense clouds
Searching for extraterrestrial civilizations
H2O maser emission associated with T Tauri and other regions of star formation
Detection of H2O maser emission from four infrared sources
The extreme high-velocity H2O maser features in W49N, W51, and Sagittarius B2
The IRC+ 10216 molecular envelope.
Characteristics of Complex Diffuse X-Ray Emission Within 20 Pc of the Galactic Center
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