期刊
NATURE PHYSICS
卷 13, 期 3, 页码 276-+出版社
NATURE PORTFOLIO
DOI: 10.1038/NPHYS3942
关键词
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资金
- Science Foundation Ireland [13/ERC/I2907]
- Deutsche Forschungsgemeinschaft (DFG) Priority Program 1573
- Gemini Observatory [GN-2016A-DD-5]
- [296.C-5037(A)]
- STFC [ST/L000628/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000628/1] Funding Source: researchfish
Solar-mass stars form via disk-mediated accretion. Recent findings indicate that this process is probably episodic in the form of accretion bursts(1), possibly caused by disk fragmentation(2-4). Although it cannot be ruled out that high-mass young stellar objects arise from the coalescence of their low-mass brethren(5), the latest results suggest that they more likely form via disks(6-9). It follows that disk-mediated accretion bursts should occur(10,11). Here we report on the discovery of the first disk-mediated accretion burst from a roughly twenty-solar-mass high-mass young stellar object(12). Our near-infrared images show the brightening of the central source and its outflow cavities. Near-infrared spectroscopy reveals emission lines typical for accretion bursts in low-mass protostars, but orders of magnitude more luminous. Moreover, the released energy and the inferred mass-accretion rate are also orders of magnitude larger. Our results identify disk-accretion as the common mechanism of star formation across the entire stellar mass spectrum.
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