A5102764659- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astronomical Observations and Instrumentation
- Astrophysics and Cosmic Phenomena
- Radio Astronomy Observations and Technology
- Astrophysics and Star Formation Studies
- CCD and CMOS Imaging Sensors
- Calibration and Measurement Techniques
National Astronomical Observatories
2025
Chinese Academy of Sciences
2025
University of Science and Technology of China
2023-2025
Abstract Understanding the circumgalactic medium (CGM) distribution of galaxies is key to revealing dynamical exchange materials between and their surroundings. In this work, we use DESI Early Data Release data set investigate cool CGM (0.3 < z 1.7) by stacking spectra background quasi-stellar objects obtain Mg ii absorption foreground galaxies. The equivalent width strongly correlates with stellar mass, EW(Mg ) <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">...
Abstract The China Space Station Telescope (CSST) is a forthcoming space-based optical telescope designed to co-orbit with the Chinese Station. With planned slitless spectroscopic survey spanning broad wavelength range of 255 − 1000 nm and an average spectral resolution exceeding 200, CSST holds significant potential for cosmic large-scale structure analysis. In this study, we focus on redshift determinations from spectra through emission line analysis within framework. Our tailored...
Abstract By analyzing data from DESI Legacy Imaging Survey of the dwarf galaxies in Arecibo Fast Alfa Survey, we have identified five ultradiffuse (UDGs) featuring central pseudobulges. These UDGs display blue pseudobulges with Sérsic indices n < 2.5 and effective radii spanning 300–700 pc, along bluer thin stellar disks exhibiting low surface brightness expansive that align UDG definition. The rotation velocities these UDGs, determined using H i line widths optical inclinations, exceed...
Abstract Green-pea galaxies are a special class of star-forming compact with strong [O iii ] λ 5007 and considered as analogs high-redshift Ly α -emitting potential sources for cosmic reionization. In this paper, we identify 76 at z < 0.35 from DR16 the Sloan Digital Sky Survey. These present relatively low stellar mass, high star-formation rate, metallicity. Both main-sequence (SFMS) relation mass–metallicity (MZR) investigated compared green-pea blueberry collected literature. It is...
Understanding the circumgalactic medium (CGM) distribution of galaxies is key to revealing dynamical exchange materials between and their surroundings. In this work, we use DESI EDR dataset investigate cool CGM ($0.3<z<1.7$) with stacking spectra background QSOs obtain Mg II absorption foreground galaxies. The equivalent width strongly correlates stellar mass EW(Mg II) $\propto M_{*}^{0.5}$ for star-forming $\log M_{*}/M_{\odot} < 10$, but independent above mass. At given mass, larger higher...
By analyzing data from DESI Legacy Imaging Survey of the dwarf galaxies in Arecibo Fast Alfa Survey, we have identified five ultra-diffuse (UDGs) featuring central pseudo-bulges. These UDGs display blue pseudo-bulges with S\'ersic indices $n<2.5$ and effective radii spanning 300-700 pc, along bluer thin stellar disks exhibiting low surface brightness expansive that align UDG definition. The rotation velocities these UDGs, determined using HI line widths optical inclinations, exceed those...