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arXiv · 1808.02192

A Submillimeter Burst of S255IR~SMA1 - The Rise And Fall Of Its Luminosity

Sheng-Yuan Liu·Yu-Nung Su·Igor Zinchenko·Kuo-Song Wang·Yuan Wang
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Abstract

Temporal photometric variations at near infrared to submillimeter wavelengths have been found in low-mass young stellar objects. These phenomena are generally interpreted as accretion events of star-disk systems with varying accretion rates. There is growing evidence suggesting that similar luminosity flaring also occurs in high-mass star/cluster-forming regions. We report in this Letter the rise and fall of the 900 ${\mu}$m continuum emission and the newly found 349.1 GHz methanol maser emission in the massive star forming region S255IR~SMA1 observed with the Submillimeter Array and the Atacama Large Millimeter/submillimeter Array. The level of flux variation at a factor of $\sim$ 2 at the submillimeter band and the relatively short 2-year duration of this burst suggest that the event is probably similar to those milder and more frequent minor bursts seen in 3D numerical simulations.

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Sheng-Yuan Liu, Yu-Nung Su, Igor Zinchenko, Kuo-Song Wang, Yuan Wang. 2018-08-07. A Submillimeter Burst of S255IR~SMA1 - The Rise And Fall Of Its Luminosity. https://doi.org/10.3847/2041-8213/aad63a

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