Spiral Structure and Massive Star formation in the Hub-Filament-System G326.27-0.49
نویسندگان
چکیده
Hub-filament systems (HFSs) are potential sites of formation star clusters and high mass stars. To understand the HFSs to provide observational constraints on current theories that attempt explainstar globally, we report a study region associated with G326.27-0.49 using infrared data dust continuum newly obtained observations molecular tracers APEX telescope. We use spectroscopic identify velocity-coherent structures (filaments clumps) their properties at resolution 0.4 pc. The contains two main velocity components: first component shows four filaments between -63 -55 km/s forming spiral structure converging in hub, second filamentary -72 harbors massive young stellar object possibly interacts hub. clumps harbouring three YSOs (187-535 Msun), have luminosities consistent B-type stars, central densities ~10^6 cm^-3 drive large outflows. Majority show virial parameters 2-7, which considering detection protostars implies collapse be gradual. conclude consists network through accretes (~10^-4 Msun/yr) onto hub some ends appear undergoing form new This identifies target for future could probe link core filament evolution.
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2023
ISSN: ['0035-8711', '1365-8711', '1365-2966']
DOI: https://doi.org/10.1093/mnras/stad215