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Investigation of the OH Maser Emission at 18 cm and Magnetic Field in the S128 Star Formation Regionстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
- Авторы: Ashimbaeva N.T., Lekht E.E., Krasnov V.V., Tolmachev A.M.
- Журнал: Astronomy Reports
- Том: 67
- Номер: 7
- Год издания: 2023
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 697
- Последняя страница: 706
- DOI: 10.1134/S1063772923070028
- Аннотация: The results of a study of the variability of OH maser emission in the lines at 18 cm in the S128 star formation region from monitoring data in 2007-2022 with the Large Radio Telescope in Nançay (France) are presented. Maser emission was observed in the main line at 1665 MHz during the entire monitoring, and only short-term emission was observed in the satellite lines at 1612 and 1720 MHz. For the four strongest features in the 1665 MHz line, the variability of the positional angle χ of linearly polarized emission was found. The dependence of the angle χ on the radial velocity to some extent resembles a limited sinusoid, which may be due to the existence of an organized spatial structure of OH maser spots and the associated transverse magnetic field. For two Zeeman pairs in the 1612 MHz line having similar radial velocities (-75.344/-75.236 and -74.980/-74.903 km/s), the detected splits have opposite signs and, therefore, opposite directions of the longitudinal magnetic field. The directions of the transverse magnetic field vectors are also determined for these features. Apparently, the magnetic field is swirling and is associated with a swirling molecular outflows of matter.
- Добавил в систему: Ашимбаева Нурия Туткабаевна