The molecular cloud S242: physical environment and star formation activities

@article{Dewangan2017TheMC,
  title={The molecular cloud S242: physical environment and star formation activities},
  author={Lokesh K. Dewangan and T. Baug and Devendra K. Ojha and P. Janardhan and R. Devaraj and A. Luna},
  journal={arXiv: Astrophysics of Galaxies},
  year={2017}
}
We present a multi-wavelength study to probe the star formation (SF) processes on a larger scale (~1.05 deg x 0.56 deg) around the S242 site. The S242 molecular cloud is depicted in a velocity range from -3.25 to 4.55 km/s and has spatially elongated appearance. Based on the virial analysis, the cloud is prone to gravitational collapse. The cloud harbors an elongated filamentary structure (EFS; length ~25 pc) evident in the Herschel column density map and the EFS has an observed mass per unit… 

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References

SHOWING 1-10 OF 59 REFERENCES
THE PHYSICAL ENVIRONMENT OF THE MASSIVE STAR-FORMING REGION W42
We present an analysis of multi-wavelength observations from various data sets and Galactic plane surveys to study the star-formation process in the W42 complex. A bipolar appearance of the W42
Multiwavelength Study of the Star Formation in the S237 H II Region
We present a detailed multiwavelength study of observations from X-ray, near-infrared, and centimeter wavelengths to probe the star formation processes in the S237 region. Multiwavelength images
A multi-wavelength study of star formation activity in the S235 complex
We have carried out an extensive multi-wavelength study to investigate the star formation process in the S235 complex. The S235 complex has a sphere-like shell appearance at wavelengths longer than 2
A CO LINE AND INFRARED CONTINUUM STUDY OF THE ACTIVE STAR-FORMING COMPLEX W51
We present the results of an extensive observational study of the active star-forming complex W51 that was observed in the J = 2 – 1 transition of the 12CO and 13CO molecules over a 125 × 100 region
Cluster-formation in the Rosette molecular cloud at the junctions of filaments
For many years feedback processes generated by OB-stars in molecular clouds, including expanding ionization fronts, stellar winds, or UV-radiation, have been proposed to trigger subsequent star
Gravitational fragmentation caught in the act: the filamentary Musca molecular cloud
Filamentary structures are common in molecular clouds. Explaining how they fragment to dense cores is a missing step in understanding their role in star formation. We perform a case study of whether
Fragmentation in filamentary molecular clouds
Recent surveys of dust continuum emission at sub-mm wavelengths have shown that filamentary molecular clouds are ubiquitous along the Galactic plane. These structures are inhomogeneous, with
The Earliest Phases of Star Formation (EPoS): a Herschel key project - The thermal structure of low-mass molecular cloud cores
Context. The temperature and density structure of molecular cloud cores are the most important physical quantities that determine the course of the protostellar collapse and the properties of the
DETERMINING STRUCTURE IN MOLECULAR CLOUDS
We descibe an automatic, objective routine for analyzing the clumpy structure in a spectral line position-position-velocity data cube. The algorithm works by first contouring the data at a multiple
A 13 CO Survey of Molecular Clouds in Gemini and Auriga
A large-scale survey for molecular clouds in 13CO(J = 1-0) was performed toward the Gemini and Auriga regions (170° < l ≤ 196° and -10° ≤ b < 10°) with velocity coverages of -30 < VLSR < +30 km s-1
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