Publications by authors named "Maokai Hu"
Dust associated with various stellar sources in galaxies at all cosmic epochs remains a controversial topic, particularly whether supernovae play an important role in dust production. We report evidence of dust formation in the cold, dense shell behind the ejecta-circumstellar medium (CSM) interaction in the Type Ia-CSM supernova (SN) 2018evt three years after the explosion, characterized by a rise in mid-infrared emission accompanied by an accelerated decline in the optical radiation of the SN. Such a dust-formation picture is also corroborated by the concurrent evolution of the profiles of the Hα emission line.
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- - Shock-breakout emission occurs when a shockwave from a massive star's explosion interacts with its outer layers, providing critical info about the explosion's characteristics.
- - The study reports early multiband observations of supernova SN 2023ixf, beginning just 1.4 hours post-explosion, marking a significant advancement in detecting this type of emission.
- - Initial light curves showed a rapid evolution and were unexpectedly fainter and redder than theoretical models, suggesting the presence of a thick dust shell and an asymmetric distribution of surrounding materials.