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http://elar.urfu.ru/handle/10995/141507
Title: | Chemical Differentiation and Gas Kinematics around Massive Young Stellar Objects in RCW 120 |
Authors: | Plakitina, K. V. Kirsanova, M. S. Kalenskii, S. V. Salii, S. V. Wiebe, D. S. |
Issue Date: | 2024 |
Publisher: | Pleiades Publishing |
Citation: | Plakitina, K. V., Kirsanova, M. S., Kalenskii, S. V., Salii, S. V., & Wiebe, D. S. (2024). Chemical Differentiation and Gas Kinematics around Massive Young Stellar Objects in RCW 120. Astrophysical Bulletin, 79(2), 235-259. https://doi.org/10.1134/S1990341324600455 |
Abstract: | Abstract: We present the results of a spectral survey towards a dense molecular condensation and young stellar objects (YSOs) projected on the border of the H II region RCW 120 and discuss the emission of the 20 molecules that produce the brightest lines. The survey is performed with the APEX telescope in the 200–260 GHz frequency range. We provide evidences for two outflows in the dense gas. The first one is powered by the RCW 120 S2 YSO and oriented along the line of sight. The second outflow around RCW 120 S1 is aligned almost perpendicular to the line of sight. We show that the areas with bright emission of CHOH, CHCCH and CHCN are organised into an onion-like structure, where CHCN traces warmer regions around the YSOs than the other molecules. Methanol seems to be released into the gas phase by shock waves in the vicinity of the outflows while thermal evaporation still does not work towards the YSOs. We find only a single manifestation of the UV radiation in the molecules, namely, enhanced abundances of small hydrocarbons CCH and c-CH in the photo-dissociation region. © Pleiades Publishing, Ltd. 2024. |
Keywords: | ASTROCHEMISTRY—STARS FORMATION—ISM ISM MOLECULES—PHOTODISSOCIATION REGION (PDR)— RADIO LINES |
URI: | http://elar.urfu.ru/handle/10995/141507 |
Access: | info:eu-repo/semantics/openAccess |
RSCI ID: | 68538715 |
SCOPUS ID: | 85200217180 |
WOS ID: | 001283241200014 |
PURE ID: | 61579775 |
ISSN: | 1990-3413 1990-3421 |
DOI: | 10.1134/S1990341324600455 |
metadata.dc.description.sponsorship: | Max-Planck-Institut fur Radioastronomie; European Southern Observatory, ESO; Swedish Research Council, (2017-00648); Russian Science Foundation, RSF, (24-22-00097); Russian Science Foundation, RSF Funding text 1: We are thankful to A.O.H. Olofsson for performing the observations with the APEX telescope. We also thank to A.V. Lapinov, A.B. Ostrovskii and A.M. Sobolev for fruitful discussions and the anonymous referee for his/her valuable comments. This publication is based on data acquired with the Atacama Pathfinder Experiment (APEX) under programm ID 0108.F-9313(A). APEX is a collaboration between the Max-Planck-Institut fur Radioastronomie, the European Southern Observatory, and the Onsala Space Observatory. Swedish observations on APEX are supported through Swedish Research Council grant No. 2017-00648.; Funding text 2: K.V. Plakitina and M.S. Kirsanova were supported by the Russian Science Foundation, grant No. 24-22-00097. |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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