A highly variable methanol maser in G111.256-0.770

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dc.contributor.author Durjasz, Michał Tomasz
dc.contributor.author Szymczak, Marian
dc.contributor.author Olech, Mateusz
dc.date.accessioned 2020-10-01T11:00:40Z
dc.date.available 2020-10-01T11:00:40Z
dc.date.issued 2019
dc.identifier.citation Monthly Notices of the Royal Astronomical Society vol. 485, 2019, pp.777–783.
dc.identifier.other 10.1093/mnras/stz472
dc.identifier.uri http://repozytorium.umk.pl/handle/item/6366
dc.description.abstract G111.256-0.770 is a high-mass young stellar object associated with a weak 6.7 GHz methanol maser showing strong variability. We present results of a multi-epoch monitoring program of the target, conducted with the Torun 32 m telescope for more than a decade. We found that the isotropic maser luminosity varied by a factor 16 on a time-scale of 5-6 yr and individual features showed small amplitude short-lived (∼0.2 yr) bursts superimposed on higher amplitude slow (>5 yr) variations. The maser integrated flux density appears to be correlated with the near-infrared flux observed with the (NEO)WISE, supporting radiative pumping of the maser line.
dc.description.sponsorship Narodowe Centrum Nauk, grant 2016/21/B/ST9/01455
dc.language.iso eng
dc.publisher Royal Astronomical Society
dc.subject masers;
dc.subject stars: formation;
dc.subject stars: individual: G111.256-0.770;
dc.subject stars: massive;
dc.subject radio lines: ISM;
dc.title A highly variable methanol maser in G111.256-0.770
dc.type info:eu-repo/semantics/article
dc.contributor.supervisor Szymczak, Marian

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