no code implementations • 4 Mar 2021 • Qingshun Hu, Yu Zhang, Ali Esamdin, Jinzhong Liu, Xiangyun Zeng
A significant negative correlation between the overall ellipticities and masses is also detected for the sample clusters with log(age/year) $\geq$ 8, suggesting that the overall shapes of the clusters are possibly influenced by the number of members and masses, in addition to the external forces and the surrounding environment.
Astrophysics of Galaxies Solar and Stellar Astrophysics
no code implementations • 21 Jan 2021 • Xiangyun Zeng, XiaoFeng Wang, Ali Esamdin, Craig Pellegrino, WeiKang Zheng, Jujia Zhang, Jun Mo, Wenxiong Li, D. Andrew Howell, Alexei V. Filippenko, Han Lin, Thomas G. Brink, Edward A. Baron, Jamison Burke, James M. DerKacy, Curtis McCully, Daichi Hiramatsu, Griffin Hosseinzadeh, Benjamin T. Jeffers, Timothy W. Ross, Benjamin E. Stahl, Samantha Stegman, Stefano Valenti, Lifan Wang, Danfeng Xiang, Jicheng Zhang, Tianmeng Zhang
We present extensive, well-sampled optical and ultraviolet photometry and optical spectra of the Type Ia supernova (SN Ia) 2017hpa.
High Energy Astrophysical Phenomena Solar and Stellar Astrophysics
no code implementations • 15 Sep 2020 • Jian-Ying Bai, Ali Esamdin, Xing Gao, Yan Yan, Juan-Juan Ren
We conducted photometric and spectroscopic observations for Ross 15 in order to further study the flare properties of this less observed flare star.
Solar and Stellar Astrophysics High Energy Astrophysical Phenomena
