Polarized Far‐Infrared Emission from the Core and Envelope of the Sagittarius B2 Molecular Cloud

1997 ◽  
Vol 487 (1) ◽  
pp. 320-327 ◽  
Author(s):  
G. Novak ◽  
J. L. Dotson ◽  
C. D. Dowell ◽  
P. F. Goldsmith ◽  
R. H. Hildebrand ◽  
...  
Keyword(s):  
Molecular Cloud ◽  
Far Infrared ◽  
Infrared Emission ◽  
The Core

scholarly journals Star Formation in the NGC 2071 Molecular Cloud

1989 ◽  
Vol 120 ◽  
pp. 128-128
Author(s):  
N.J. Evans
Keyword(s):  
Star Formation ◽  
High Resolution ◽  
Density Distribution ◽  
Molecular Cloud ◽  
Large Scale ◽  
Far Infrared ◽  
Infrared Emission ◽  
Molecular Outflow ◽  
Broad Array ◽  
Coherent Picture

The NGC 2071 molecular cloud has been studied with a broad array of techniques, including a large scale study of CS emission, high resolution scans in the far-infrared, N H3 studies with the VLA, and near-infrarred imaging. The far-infrared emission constrains the density distribution to fall off approximately as r−1. The NH3 data strongly supports the presence of a disk oriented perpendicular to the molecular outflow, while the CS emission indicates the presence of dense gas in the region. The results will be combined into a coherent picture of this region of current star formation and molecular outflow.

scholarly journals ASCA Observation of NGC1333 Star Forming Region

1998 ◽  
Vol 188 ◽  
pp. 228-229
Author(s):  
M. Itoh ◽  
H. Fukunaga ◽  
K. Koyama ◽  
Y. Tsuboi ◽  
S. Yamauchi ◽  
...  
Keyword(s):  
Molecular Cloud ◽  
Far Infrared ◽  
Infrared Emission ◽  
Primary Objective ◽  
X Rays ◽  
Active Star ◽  
Star Forming ◽  
Molecular Outflows ◽  
Reflection Nebula

The region south of the reflection nebula NGC1333 in Perseus is an active star forming region including numerous Herbig-Haro objects and at least 5 protostar candidates with molecular outflows and far-infrared emission. It has been actively studied in various wave bands (e.g. Aspin et al 1994 and references therein). We observed this region with ASCA with the primary objective to detect X-rays from the protostars embedded deep in the molecular cloud.

Far infrared emission from magnetically quantised 2DEGs in GaAs/(AlGa)As heterojunctions

1994 ◽  
Vol 305 (1-3) ◽  
pp. 280-284 ◽  
Author(s):  
N.N. Zinov'ev ◽  
R. Fletcher ◽  
L.J. Challis ◽  
B. Sujak-Cyrul ◽  
A.V. Akimov ◽  
...  
Keyword(s):  
Far Infrared ◽  
Infrared Emission

scholarly journals Far-Infrared Emission from Clumpy Irregular Galaxies

1987 ◽  
Vol 115 ◽  
pp. 647-647
Author(s):  
U. Klein ◽  
J. Heidmann ◽  
R. Wielebinski ◽  
E. Wunderlich
Keyword(s):  
Star Formation ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Hubble Constant ◽  
Far Infrared ◽  
Hii Regions ◽  
Infrared Emission ◽  
Star Forming ◽  
Irregular Galaxies

The four clumpy irregular galaxies Mkr 8, 296,297 and 325 have been observed by IRAS. All galaxies have been detected in at least two of the four detector bands. The ratios of the 100 to 60-m flux densities are comparable to those of HII regions or violently star forming galaxies. The average star formation rate in clumpy irregular galaxies is of the order of a few solar masses per year (based on their average far-infrared luminosity and a Hubble constant of 75 km s−1 Mpc−1.

Energy Sources of the Far‐Infrared Emission of M33

2004 ◽  
Vol 154 (1) ◽  
pp. 259-265 ◽  
Author(s):  
J. L. Hinz ◽  
G. H. Rieke ◽  
K. D. Gordon ◽  
P. G. Perez‐Gonzalez ◽  
C. W. Engelbracht ◽  
...  
Keyword(s):  
Far Infrared ◽  
Infrared Emission ◽  
Energy Sources

scholarly journals Discovery of the Carina Flare with NANTEN; Evidence for a Supershell That Triggered the Formation of Stars and Massive Molecular Clouds

1999 ◽  
Vol 51 (6) ◽  
pp. 751-764 ◽  
Author(s):  
Yasuo Fukui ◽  
Toshikazu Onishi ◽  
Rihei Abe ◽  
Akiko Kawamura ◽  
Kengo Tachihara ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Molecular Clouds ◽  
Galactic Plane ◽  
Far Infrared ◽  
Infrared Emission ◽  
High Mass ◽  
Stellar Winds ◽  
Neutral Gas ◽  
Supernova Explosions ◽  
Current Kinetic

Abstract We present extensive observations of the Carina arm region in the 2.6 mm CO (J = 1−0) emission with the NANTEN telescope in Chile. The observations have revealed 120 molecular clouds which are distributed in an area of 283° < l < 293° and 2° .5 < b < 10°. Because of its vertical elongation to the galactic plane, the clouds are named the Carina flare. H I and far-infrared emission show a cavity-like distribution corresponding to the molecular clouds, and soft X-ray emission appears to fill this cavity. It is shown that the Carina flare represents a supershell at a distance of a few kpc that has been produced by about 20 supernova explosions, or equivalent stellar winds of OB stars, over the last ∼ 2×107 yr. The supershell consisting of molecular and atomic neutral gas involves a total mass and kinetic energy of ≳ 3×105M⊙ and ≳ 3×1050 erg, respectively, and the originally injected energy required is about 100-times this current kinetic energy in the shell. It is unique among supershells known previously because of the following aspects: i) it exhibits evidence for the triggered formation of intermediate-to-high-mass stars and massive molecular clouds of 102 − 104M⊙, and ii) the massive molecular clouds formed are located unusually far above the galactic plane at z ∼ 100–500 pc.

scholarly journals Stratospheric HBr concentration profile obtained from far-infrared emission spectroscopy

1997 ◽  
Vol 24 (3) ◽  
pp. 281-284 ◽  
Author(s):  
I. G. Nolt ◽  
P. A. R. Ade ◽  
F. Alboni ◽  
B. Carli ◽  
M. Carlotti ◽  
...  
Keyword(s):  
Concentration Profile ◽  
Emission Spectroscopy ◽  
Far Infrared ◽  
Infrared Emission ◽  
Infrared Emission Spectroscopy
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