Molecular emission in dense massive clumps from the star-forming regions S231–S235 View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2016-04

AUTHORS

D. A. Ladeyschikov, M. S. Kirsanova, A. P. Tsivilev, A. M. Sobolev

ABSTRACT

The paper is concerned with the study of the star-forming regions S231–S235 in radio lines of molecules of the interstellar medium—carbon monoxide (CO), ammonia (NH3), cyanoacetylene (HC3N), in maser lines—methanol (CH3OH) and water vapor (H2O). The regions S231–S235 belong to the giant molecular cloudG174+2.5. The goal of this paper is to search for new sources of emission toward molecular clumps and to estimate their physical parameters from CO and NH3 molecular lines. We obtained new detections ofNH3 andHC3Nlines in the sources WB89673 and WB89 668 which indicates the presence of high-density gas. From the CO line, we derived sizes, column densities, and masses of molecular clumps. From the NH3 line, we derived gas kinetic temperatures and number densities in molecular clumps. We determined that kinetic temperatures and number densities of molecular gas are within the limits 16–30 K and 2.8–7.2 × 103 cm−3 respectively. The shock-tracing line of CH3OH molecule at a frequency of 36.2 GHz was detected in WB89 673 for the first time. More... »

PAGES

208-224

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1990341316020085

DOI

http://dx.doi.org/10.1134/s1990341316020085

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1035822221


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