183 citations · 429 across the 16 of their papers we have counts for
16 papers
Spectral Dataset of Stripped-Envelope Supernovae from the Tsinghua Supernova Group
Danfeng Xiang, Xiaofeng Wang, Jujia Zhang +40
The extent of envelope stripping in the progenitor stars is directly reflected in the diversity of spectral features observed in stripped-envelope supernovae (SESNe). Through exten…
An investigation on the FWHM of absorption features of type Ia supernovae
Xulin Zhao, Keiichi Maeda, Xiaofeng Wang
We present an investigation of the full width at half maximum (FWHM, or γ) of absorption features of Type Ia supernova (SNe Ia). We found that, the average value of FWHM can be wel…
Puzzling High-Velocity Calcium Absorption Features Of Type Ia Supernovae
Xulin Zhao
Absorption features Ca II NIR and Ca II H&K of type Ia supernovae (SNe Ia) are characterized by their strong high-velocity features (HVFs). We find that, for these two features of…
SN 2012ij: A low-luminosity type Ia supernova and evidence for continuous distribution from 91bg-like explosion to normal ones
Zhitong Li, Tianmeng Zhang, Xiaofeng Wang +24
In this paper, we present photometric and spectroscopic observations of a subluminous type Ia supernova (SN Ia) 2012ij, which has an absolute -band peak magnitude $M_{B,\rm{max}…
SN 2015bf: a fast declining type II supernova with flash-ionised signatures
Han Lin, Xiaofeng Wang, Jujia Zhang +19
We present optical and ultraviolet photometry, as well as optical spectra, for the type II supernova (SN) 2015bf. Our observations cover the phases from to d af…
Optical and Ultraviolet Monitoring of the Black Hole X-ray Binary MAXI J1820+070/ASASSN-18ey for 18 Months
Hanna Sai, Xiaofeng Wang, Jianfeng Wu +20
MAXI J1820+070 is a low-mass black hole X-ray binary system with high luminosity in both optical and X-ray bands during the outburst periods. We present extensive photometry in X-r…
A study of Si II and S II features in spectra of Type Ia supernova
Xulin Zhao, Keiichi Maeda, Xiaofeng Wang +1
We studied the spectral features of Si II 4130, 5972, 6355 and S II W-trough for a large sample of Type Ia supernovae (SNe Ia). We find that in NV (Normal-Velocity) subclass of…
Observations of A Fast-Expanding and UV-Bright Type Ia Supernova SN 2013gs
Tianmeng Zhang, Xiaofeng Wang, Xulin Zhao +21
In this paper, we present extensive optical and ultraviolet (UV) observations of the type Ia supernova (SN Ia) 2013gs discovered during the Tsinghua-NAOC Transient Survey. The phot…
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…
The first 48: Discovery and progenitor constraints on the Type Ia supernova 2013gy
S. Holmbo, M. D. Stritzinger, B. J. Shappee +26
We present an early-phase -band light curve and visual-wavelength spectra of the normal Type Ia supernova (SN) 2013gy. The light curve is constructed by determining the appropri…
SN 2014J in M82: New Insights On the Spectral Diversity of Type Ia Supernovae
Kaicheng Zhang, Xiaofeng Wang, JuJia Zhang +25
We present extensive spectroscopic observations for one of the closest type Ia supernovae (SNe Ia), SN 2014J discovered in M82, ranging from 10.4 days before to 473.2 days after B-…
Seeing Double: ASASSN-18bt Exhibits a Two-Component Rise in the Early-Time K2 Light Curve
B. J. Shappee, T. W. -s. Holoien, M. R. Drout +109
On 2018 Feb. 4.41, the All-Sky Automated Survey for SuperNovae (ASAS-SN) discovered ASASSN-18bt in the K2 Campaign 16 field. With a redshift of z=0.01098 and a peak apparent magnit…
UV-Optical Observation of Type Ia Supernova SN 2013dy in NGC 7250
Qian Zhai, JuJia Zhang, XiaoFeng Wang +15
Extensive and independent observations of Type Ia supernova (SN Ia) SN 2013dy are presented, including a larger set of photometry and optical spectra from a few days before…
Optical observations of a SN 2002cx-like peculiar supernova SN 2013en in UGC 11369
Zheng-Wei Liu, Jujia Zhang, Fabrizio Ciabattari +7
We present optical observations of a SN 2002cx-like supernova SN 2013en in UGC 11369, spanning from a phase near maximum light (t= +1 d) to t= +60 d with respect to the R-band maxi…
SN 2013ej in M74: A Luminous and Fast-declining Type II-P Supernova
Fang Huang, Xiaofeng Wang, Jujia Zhang +7
We present extensive ultraviolet, optical, and near-infrared observations of the type IIP supernova (SN IIP) 2013ej in the nearby spiral galaxy M74. The multicolor light curves, sp…
Evidence for Two Distinct Populations of Type Ia Supernovae
Xiaofeng Wang, Lifan Wang, Alexei V. Filippenko +2
Type Ia supernovae (SNe Ia) have been used as excellent standardizable candles for measuring cosmic expansion, but their progenitors are still elusive. Here we report that the spec…