2110.09669.pdf (384.83 kB)
Molecular line search toward the flaring 6.7-GHz methanol masers of G24.33+0.13 and G359.62–0.24: rare maser transitions detected
journal contributionposted on 2023-05-21, 04:25 authored by Tiege McCarthyTiege McCarthy, Orosz, G, Simon EllingsenSimon Ellingsen, Breen, SL, Voronkov, MA, Burns, RA, Olech, M, Yonekura, Y, Hirota, T, Lucas HylandLucas Hyland, Wolak, P
We have performed a molecular line search toward the flaring 6.7-GHz masers G24.33+0.13 and G359.62-0.24 using the Australia Telescope Compact Array. We present spectra of the 6.7-GHz class~II methanol and 22.2-GHz water masers toward these sources and provide comparison with other recent flaring events these sources have experienced. We also detect the fourth example of a 23.4-GHz class~I methanol maser, and the eleventh example of a 4.8-GHz formaldehyde maser toward G24.33+0.13. Alongside these results, we observe the previously detected ammonia (3,3) emission and report upper limits on the presence of various other cm-wavelength methanol, ammonia and OH transitions. Our results are consistent with the flaring of G24.33+0.13 being driven by a variable accretion rate in the host high-mass young stellar object.
Department/SchoolSchool of Natural Sciences
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