Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32772
Title: | Expansion of methanol maser rings | Authors: | Bartkiewicz, Anna SANNA, ALBERTO Szymczak, Marian MOSCADELLI, Luca van Langevelde, Huib |
Issue Date: | 2018 | Volume: | Astrophysical Masers: Unlocking the Mysteries of the Universe | Editors: | Tarchi, Andrea; Reid, Mark J.; Castangia, Paola | Series: | PROCEEDINGS OF THE INTERNATIONAL ASTRONOMICAL UNION | Number: | vol. 13, 336 | First Page: | 211 | Abstract: | Ring-like sources of 6.7 GHz methanol maser emission were discovered a decade ago with the European VLBI Network. In the past years we have been incessantly working to understand the nature of these rings. In general, the methanol rings do not coincide with H II regions nor they show 22 GHz water maser emission. Here, we present a proper motion study over a time baseline up to 10.5 years for the first sub-sample of methanol maser rings. Our findings suggest that in three targets G23.207-00.377, G23.389+00.185, and G23.657-00.127, such rings form in outflows or even in winds close to the central sources, and the masers trace slow proper motions of a few km s<SUP>-1</SUP> typically. | Conference Name: | Astrophysical Masers: Unlocking the Mysteries of the Universe | Conference Place: | Cagliari, Italy | Conference Date: | 4-8 September, 2017 | URI: | http://hdl.handle.net/20.500.12386/32772 | URL: | https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/expansion-of-methanol-maser-rings/50B6ED8E65180ED3E5FE7C8F94719D56 https://api.elsevier.com/content/abstract/scopus_id/85060076817 |
ISSN: | 1743-9213 | DOI: | 10.1017/S1743921317010055 | Bibcode ADS: | 2018IAUS..336..211B | Fulltext: | open |
Appears in Collections: | 3.01 Contributi in Atti di convegno |
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Bartkiewictz_2018.pdf | PDF editoriale | 192.52 kB | Adobe PDF | View/Open |
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