A5049854800- Astronomy and Astrophysical Research
- Galaxies: Formation, Evolution, Phenomena
- Stellar, planetary, and galactic studies
- Scientific Research and Discoveries
- Astronomical Observations and Instrumentation
- Astrophysical Phenomena and Observations
- Historical Geography and Cartography
- Cosmology and Gravitation Theories
Nanjing University
2023-2024
Jet Propulsion Laboratory
1994
The study of distant galaxy groups and clusters at the peak epoch star formation is limited by lack a statistically homogeneously selected spectroscopically confirmed sample. Recent discoveries concentrated starburst activities in cluster cores have opened new window to hunt for these structures based on their integrated IR luminosities. Here, we carry out large NOEMA (NOrthern Extended Millimeter Array) program targeting statistical sample infrared-luminous sources associated with...
Clusters and their progenitors (protoclusters) at z = 2-4, the peak epoch of star formation, are ideal laboratories to study formation process both clusters themselves member galaxies. However, a complete census galaxies has been challenging due observational difficulties. Here we present new JWST/NIRCam observations targeting distant cluster CLJ1001 2.51 from COSMOS-Web program, which, in combination with previous narrowband imaging H-alpha emitters deep millimeter surveys CO emitters,...
Abstract Structural properties of cluster galaxies during their peak formation epoch, z ∼ 2–4 provide key information on whether and how the environment affects galaxy evolution. Based deep Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) imaging toward = 2.51 cluster, J1001, we explore environmental effects structure, color gradients, stellar populations a statistical sample star-forming (SFGs). We find that SFGs are average smaller than field counterparts. This difference is most...
One of the main challenges in galaxy formation that has emerged recently is early assembly massive galaxies. The observed number density and maximum stellar mass ($M_{\star}$) galaxies Universe appear to be higher than model predictions, which may pose a serious problem LCDM cosmology. A major limitation many previous studies large uncertainty estimating $M_{\star}$ due lack constraints rest-frame near-infrared part spectral energy distribution, critical determining accurately. Here we use...
The study of distant galaxy groups and clusters at the peak epoch star formation is limited by lack a statistically homogeneously selected spectroscopically confirmed sample. Recent discoveries concentrated starburst activities in cluster cores have opened new window to hunt for these structures based on their integrated IR luminosities. Hereby we carry out large NOEMA (NOrthern Extended Millimeter Array) program targeting statistical sample infrared-luminous sources associated with...
Abstract Clusters and their progenitors (protoclusters) at z ∼ 2 − 4, the peak epoch of star formation, are ideal laboratories to study formation process both clusters themselves member galaxies. However, a complete census galaxies has been challenging due observational difficulties. Here we present new JWST/NIRCam observations targeting distant cluster CLJ1001 = 2.51 from COSMOS-Web program, which, in combination with previous narrowband imaging H α emitters deep millimeter surveys CO...
New positions (good to ± 15 arcsec), revised sizes, and sample cross-identifications are presented for dwarf galaxies published by Mailyan (1973). Of the 104 originally catalogued we were able recover only 100, despite an extensive search of red blue POSS prints. Over half recovered objects found correspond previously galaxies; few if any these spheroidal galaxies, but rather mostly irregulars low surface brightness.