Zobrazeno 1 - 10
of 1 149
pro vyhledávání: '"Szymczak, M"'
Autor:
Bartkiewicz, A., Sanna, A., Szymczak, M., Moscadelli, L., van Langevelde, H. J., Wolak, P., Kobak, A., Durjasz, M.
Publikováno v:
A&A 686, A275 (2024)
Methanol masers at 6.7~GHz are well-known signposts of high-mass star-forming regions. [...] We aim to understand the origin of the ring-like structures outlined by methanol maser emission in a number of sources. This emission could be, a priori, spa
Externí odkaz:
http://arxiv.org/abs/2404.07333
Autor:
Szymczak, M., Durjasz, M., Goedhart, S., Wolak, P., Bartkiewicz, A., Garatti, A. Caratti o, Kobak, A., Massi, F.
Aims: We report the discovery and analysis of a periodic methanol maser in the massive protostar IRAS 20216+4104. Methods: To obtain the light curve, we used the 6.7 GHz methanol maser spectra collected between 2000-2003 and 2009-2023 with the Harteb
Externí odkaz:
http://arxiv.org/abs/2312.01978
Autor:
Aberfelds, A, Bartkiewicz, A, Szymczak, M, Šteinbergs, J, Surcis, G, Kobak, A, Durjasz, M, Shmeld, I
Publikováno v:
MNRAS, Volume 524, Issue 1, September 2023, Pages 599-618
{The variability study of 6.7\,GHz methanol masers has become a useful way to improve our understanding of the physical conditions in high-mass star-forming regions.} {Based on the single-dish monitoring using the Irbene telescopes, we selected three
Externí odkaz:
http://arxiv.org/abs/2307.03663
Autor:
Kobak, A., Bartkiewicz, A., Szymczak, M., Olech, M., Durjasz, M., Wolak, P., Chibueze, J. O., Hirota, T., Eislöffel, J., Stecklum, B., Sobolev, A., Bayandina, O., Orosz, G., Burns, R. A., Kim, Kee-Tae, Heever, S. P. van den
Publikováno v:
A&A 671, A135 (2023)
Recent studies have shown that 6.7 GHz methanol maser flares can be a powerful tool for verifying the mechanisms of maser production and even the specific signatures of accretion rate changes in the early stages of high-mass star formation. We charac
Externí odkaz:
http://arxiv.org/abs/2302.02723
Publikováno v:
A&A 663, A123 (2022)
Context: Class II methanol masers at 6.7 GHz originate close to high-mass young stellar objects (HMYSOs). Their high sensitivity to local condition variations makes them a useful marker of the activity of the emerging massive stars. Aims: We aim to c
Externí odkaz:
http://arxiv.org/abs/2205.08759
Publikováno v:
In Chemical Engineering Journal 1 May 2024 487
Publikováno v:
A&A 648, A118 (2021)
Context. Class II methanol masers at 6.7 and 12.2 GHz occur close to high-mass young stellar objects (HMYSOs). When they are observed simultaneously, such studies may contribute to refining the characterisation of local physical conditions. Aims. We
Externí odkaz:
http://arxiv.org/abs/2103.13953
Publikováno v:
A&A 642, A145 (2020)
The excited states of OH masers detected in the environment of high-mass young stellar objects (HMYSOs) are important for improving our understanding of the physical conditions of these objects and also provide information about their magnetic fields
Externí odkaz:
http://arxiv.org/abs/2009.06291
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
Externí odkaz:
http://arxiv.org/abs/1902.06712
Publikováno v:
In Chemical Engineering Journal 15 June 2023 466