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- Title
Survey of Regions with Methanol Masers in the CS (J = 2-1) Line: Statistical Characteristics of Radiation.
- Authors
Patoka, O. M.; Shulga, V. M.; Antyufeyev, O. V.; Myshenko, V. V.; Korolev, A. M.; Piddyachiy, V. I.
- Abstract
Abstract: The paper aims at establishing relations between the parameters of methanol maser emission that originates in dense star-forming regions and parameters of a dense core using emission of the CS molecule. A total of 164 sources toward the positions of methanol masers using the RT-22 radio telescope at CrAO, Ukraine, have been observed. For 85 sources, the CS (J = 2-1) line emission was detected. Most of the sources have been selected from catalogs of the class I and class II methanol masers. For methanol masers, this is the most complete survey in the CS (J = 2-1) line on the northern sky. A comparative analysis of parameters of methanol masers spectra in the CS (J = 2-1) line, and methanol masers, luminosities of dense cores, and infrared sources, has been performed. The detection rates of the CS (J = 2-1) line emission, its intensities and widths, the differences between the systematic velocities and velocities of the maser line centers have been investigated. The radiation detection rates in the CS (J = 2-1) line are shown to differ for various source samplings. The form of the dependences lgLcs - lgLbol, lgLmas - lgLcs and lgLmas - lgLbol has been found for sources with which methanol masers are associated. Based on the luminosity of infrared sources, samples of sources in which the CS (J = 2-1) line emission is detected with a higher probability have been determined.
- Subjects
METHANOL; RADIATION; STAR formation; STELLAR luminosity function; RADIO telescopes
- Publication
Kinematics & Physics of Celestial Bodies, 2018, Vol 34, Issue 5, p217
- ISSN
0884-5913
- Publication type
Article
- DOI
10.3103/S0884591318050033