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INVESTIGATION OF THE MAGNETIC FIELD FROM OBSERVATIONS OF THE OH MASER IN THE G10.624–0.385 STAR FORMATION REGION

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1. Title Title of document INVESTIGATION OF THE MAGNETIC FIELD FROM OBSERVATIONS OF THE OH MASER IN THE G10.624–0.385 STAR FORMATION REGION
2. Creator Author's name, affiliation, country N. T. Ashimbaeva; Lomonosov Moscow State University, P.K. Sternberg State Astronomical Institute
2. Creator Author's name, affiliation, country E. E. Lekht; Lomonosov Moscow State University, P.K. Sternberg State Astronomical Institute
2. Creator Author's name, affiliation, country V. V. Krasnov; Astrospace Center of the P.N. Lebedev Physical Institute, Russian Academy of Sciences
2. Creator Author's name, affiliation, country A. M. Tolmachev; Pushchino Radio Astronomy Observatory, Astrospace Center of the P.N. Lebedev Physical Institute, Russian Academy
of Sciences
3. Subject Discipline(s)
3. Subject Keyword(s) star formation; OH masers; molecular clouds and bipolar outflows; magnetic field; individual objects (G10.624–0.385)
4. Description Abstract

The results of a study of the variability of maser emission in OH lines in the 18 cm range in the G10.624–0.385 star formation region from monitoring data performed at the Large Radio Telescope in Nançay (France) in 2008–2023 are presented. It is obtained that for a Zeeman pair in line 1667 MHz splitting (about 1.96 km/s) and, consequently, the magnitude of the longitudinal magnetic field have been stable for more than 25 years. In the satellite lines of 1612 and 1720 MHz, broadband absorption and emission are observed, respectively. Mirrored The profiles of the OH 1612 and 1720 MHz satellite lines indicate that the levels of the corresponding transitions are pumped by IR radiation from a source immersed in a magnetized molecular cloud around the OH maser. Spatial identification of details in both main lines is carried out. It is found that the transverse magnetic field is directed mainly along some organized structure in the form of an arc.

5. Publisher Organizing agency, location The Russian Academy of Sciences
6. Contributor Sponsor(s)
7. Date (DD-MM-YYYY) 01.07.2023
8. Type Status & genre Peer-reviewed Article
8. Type Type
9. Format File format
10. Identifier Uniform Resource Identifier https://rjmseer.com/0004-6299/article/view/647541
10. Identifier Digital Object Identifier (DOI) 10.31857/S0004629923070010
10. Identifier eLIBRARY Document Number (EDN) FKWOBD
11. Source Title; vol., no. (year) Astronomičeskij žurnal; Vol 100, No 7 (2023)
12. Language English=en
13. Relation Supp. Files (170KB)
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14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
15. Rights Copyright and permissions Copyright (c) 2023 Н.Т. Ашимбаева, Е.Е. Лехт, В.В. Краснов, А.М. Толмачев