4 papers
Early-time millimeter observations of the nearby Type II SN 2024ggi
Maokai Hu, Yiping Ao, Yi Yang +4
The short-lived ionized emission lines in early spectroscopy of the nearby type II supernova SN 2024ggi signify the presence of dense circumstellar matter (CSM) close to its progen…
Optical and Near-Infrared Observations of the Nearby Type Ia Supernova 2017cbv
Lingzhi Wang, Carlos Contreras, Maokai Hu +28
Supernova (SN) 2017cbv in NGC 5643 is one of a handful of type Ia supernovae (SNe~Ia) reported to have excess blue emission at early times. This paper presents extensive $BVRIYJHK_…
Observations of Type Ia Supernova 2014J for Nearly 900 Days and Constraints on Its Progenitor System
Wenxiong Li, Xiaofeng Wang, Maokai Hu +18
We present extensive ground-based and () photometry of the highly reddened, very nearby type Ia supernova (SN Ia) 2014J in M82, covering the phases fr…
The Cold and Dusty Circumstellar Matter around Fast-expanding Type Ia Supernovae
Xiaofeng Wang, Jia Chen, Lifan Wang +5
Type Ia supernovae (SNe Ia) play key roles in revealing the accelerating expansion of the universe, but our knowledge about their progenitors is still very limited. Here we report…