Submillimeter and far-infrared line observations of M17 SW - A clumpy molecular cloud penetrated by ultraviolet radiation

1988 ◽  
Vol 332 ◽  
pp. 379 ◽  
Author(s):  
J. Stutzki ◽  
G. J. Stacey ◽  
R. Genzel ◽  
A. I. Harris ◽  
D. T. Jaffe ◽  
...  
Keyword(s):  
Ultraviolet Radiation ◽  
Molecular Cloud ◽  
Far Infrared

Far-infrared observations of M17 - The interaction of an H II region with a molecular cloud

1979 ◽  
Vol 233 ◽  
pp. 575 ◽  
Author(s):  
I. Gatley ◽  
E. E. Becklin ◽  
K. Sellgren ◽  
M. W. Werner
Keyword(s):  
Molecular Cloud ◽  
Far Infrared ◽  
Infrared Observations ◽  
H Ii Region

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 Near-Infrared Images of the Serpens Molecular Cloud Core

1989 ◽  
Vol 120 ◽  
pp. 227-230
Author(s):  
C. Eiroa ◽  
M. Casali
Keyword(s):  
Molecular Cloud ◽  
Large Scale ◽  
Near Infrared ◽  
Far Infrared ◽  
Infrared Images ◽  
Infrared Source ◽  
Stellar Objects ◽  
Dark Clouds ◽  
First Time ◽  
Cloud Core

ABSTRACT:Near-infrared images of the Serpens molecular cloud core have been carried out at UKIRT (Mauna Kea Observatory) using the infrared array camera, IRCAM. A large-scale diffuse nebulosity extending over the central part of the core is observed. Over 100 K-sources are detected in the 30 arc min2 cloud core. Some of them are PMS objects which were previously unknown. For the first time, a near-infrared counterpart of the far-infrared source Seroens FIRS1 has been detected. The 2.2 µm source appears as a point like object at the apex of an extended knotty, jet-like nebulosity oriented towards the northwest. In addition, a group of 11 stellar objects is seen in the position of the IR/radio source SVS4. These objects are embedded in a very faint nebulosity and form one of the densest clustering of young stars found in dark clouds.

Far-infrared Imaging of the HII Region-Molecular Cloud Complex W51A with a Balloon-borne Telescope

Amazing Light ◽  
1996 ◽  
pp. 521-541 ◽  
Author(s):  
Francesco A. Pepe ◽  
Roland Brodbeck ◽  
Daniel Huguenin ◽  
Fritz K. Kneuböhl
Keyword(s):  
Molecular Cloud ◽  
Infrared Imaging ◽  
Far Infrared ◽  
Hii Region ◽  
Cloud Complex

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

The dynamics of molecular cloud envelopes in a varying ultraviolet radiation field

1992 ◽  
Vol 401 ◽  
pp. 182 ◽  
Author(s):  
C. B. de Boisanger ◽  
J.-P. Chieze ◽  
B. Meltz
Keyword(s):  
Ultraviolet Radiation ◽  
Radiation Field ◽  
Molecular Cloud

scholarly journals A 3D view of the Taurus star-forming region by Gaia and Herschel

2020 ◽  
Vol 638 ◽  
pp. A85
Author(s):  
V. Roccatagliata ◽  
E. Franciosini ◽  
G. G. Sacco ◽  
S. Randich ◽  
A. Sicilia-Aguilar
Keyword(s):  
Molecular Cloud ◽  
Stellar Population ◽  
Three Dimensional ◽  
Far Infrared ◽  
Space Velocity ◽  
Three Dimensions ◽  
Star Formation History ◽  
Proper Motions ◽  
Star Forming ◽  
Taurus Region

Context. Taurus represents an ideal region to study the three-dimensional distribution of the young stellar population and relate it to the associated molecular cloud. Aims. The second Gaia data release (DR2) enables us to investigate the Taurus complex in three dimensions, starting from a previously defined robust membership. The molecular cloud structured in filaments can be traced in emission using the public far-infrared maps from Herschel. Methods. From a compiled catalog of spectroscopically confirmed members, we analyze the 283 sources with reliable parallax and proper motions in the Gaia DR2 archive. We fit the distribution of parallaxes and proper motions with multiple populations described by multivariate Gaussians. We compute the cartesian Galactic coordinates (X,Y,Z) and, for the populations associated with the main cloud, also the galactic space velocity (U,V,W). We discuss the spatial distribution of the populations in relation to the structure of the filamentary molecular cloud traced by Herschel. Results. We discover the presence of six populations which are all well defined in parallax and proper motions, with the only exception being Taurus D. The derived distances range between ~130 and ~160 pc. We do not find a unique relation between stellar population and the associated molecular cloud: while the stellar population seems to be on the cloud surface, both lying at similar distances, this is not the case when the molecular cloud is structured in filaments. Taurus B is probably moving in the direction of Taurus A, while Taurus E appears to be moving towards them. Conclusions. The Taurus region is the result of a complex star formation history which most probably occurred in clumpy and filamentary structures that are evolving independently.

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.

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