7 papers
SN 2022erq: A Superluminous Thermonuclear Supernova with Escalating Preexplosion Mass Loss
Qian Zhai, Jujia Zhang, Xiaofeng Wang +51
We present a photometric and spectroscopic study of the superluminous Type Ia supernova SN 2022erq. Its early spectra, dominated by iron-group elements with weak intermediate-mass…
Cooler Phases of the Circumgalactic Medium Are More Centrally Concentrated: Constraints from Multiphase Absorption Lines
Weiwen Kong, Zeyu Chen, Enci Wang +7
We present a systematic study of the multiphase circumgalactic medium (CGM) around galaxies and quasars, traced by Ca II , Mg II , and C IV…
Probing the influence of the protocluster environment on galaxy morphology at z = 2.23
Emmet Golden-Marx, Zheng Cai, Dongdong Shi +7
As galaxies evolve in dense cluster and protocluster environments, they interact and quench their star formation, which gradually transforms the galaxy population from star-forming…
Narrowband Imaging of a z=3.24 Protocluster: Insights from [O III] Emitting Galaxies
Ke Shi, Jun Toshikawa, XianZhong Zheng +2
We present a narrowband imaging on a spectroscopically confirmed protocluster ``D4UD01'' at z=3.24 using CFHT/WIRCam. We identify a sample of 24 [O III] emission line galaxies in t…
Searching for Nearby Diffuse Dwarf Galaxies in the COSMOS Field
Dongdong Shi, XianZhong Zheng, Zhizheng Pan +5
It remains challenging to systematically survey nearby diffuse dwarf galaxies and address the formation mechanism of this population distinguishing from regular ones. We carry out…
Discovery of 19 strongly-lensed quasars, dual and projected quasars in DESI-LS
Zizhao He, Qihang Chen, Limeng Deng +5
We report the follow-up spectroscopic confirmation of two lensed quasars, six dual quasars, and eleven projected quasars that were previously identified as lensed-quasar candidates…