REGIONS OF EXISTENCE OF THE CLASS II METHANOL MASERS. STATISTICAL FEATURES OF EMISSION IN CS (J = 2 - 1) LINE

DOI: https://doi.org/10.15407/rpra22.03.173

O. M. Patoka, V. M. Shulga, O. V. Antyufeyev, S. Y. Zubrin, V. V. Myshenko, A. M. Korolev, V. I. Piddyachiy

Abstract


PACS numbers: 95.85.Bh,
97.10.Bt, 98.38.Er 

Purpose: The statistical features of emission in CS (J = 2 - 1) line, Class II methanol masers and IR sources in the regions associated with the Class II methanol masers are studied.

Design/methodology/approach: The survey is performed at the CS (J = 2 - 1) line transition frequency, since this molecule is a solid gas tracer in which the conditions for the existence of methanol masers should arise.

Findings: For the sources with which the Class II methanol masers are associated the dependences logLSC - logLbol , logLmeth - logLSC, and logLmeth - logLbol have been found. It is shown that on the average, the emission in the CS (J = 2 - 1) line toward Class II methanol masers is more often detected in those sources which are associated with the higher bolometric luminosity IR sources.

Conclusions: The survey of the emission in the CS (J = 2 - 1) line toward Class II methanol masers for the northern celestial hemisphere was carried out. The statistical features of the emission in the CS (J = 2 - 1) line, Class II methanol masers and IR sources are shown.

Key words: methanol masers, CS, dense cores, star formation

Manuscript submitted 26.07.2017

Radio phys. radio astron. 2017, 22(3): 173-200

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Keywords


methanol masers; CS; dense cores; star formation

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