SJTU Astrocoffee

Organizers:

• Zhiwei Shao (zwshao@sjtu.edu.cn)

SJTU Astrocoffee meets on Fridays at 10:00 am (GMT+8) at the TDLI.

29 Aug, 2025

• [Zhibo Chen] Physical properties of gas departing from circular rotation at 50 pc scales using the PHANGS-MUSE galaxies

• [Xin Li] A^3COSMOS: The dust content of massive quiescent galaxies and its evolution with cosmic time

• [Yunzhe Gu] Magnetic Pressure Dominance Stabilizes AGN Disks Against Gravitational Instability

• [Yuanye Lin] A Uniform Analysis of Gas-phase Metallicity Evolution with 1-3 Gyr Time Sampling over the Past 12 Billion Years

22 Aug, 2025

• [Yunzhe Gu] Little Red Dots as Direct-collapse Black Hole Nurseries

• [Zhibo Chen] Origin of High Dark Remnant Fractions in Milky Way Globular Clusters: The Crucial Role of Initial Black Hole Retention

15 Aug, 2025

• [Yunzhe Gu] The Filament Rift: ΛCDM's Structural Challenge Against Observation

• [Zhiwei Shao] Abundance and phase-space distribution of subhalos in cosmological N-body simulations: testing numerical convergence and correction method

8 Aug, 2025

• [Zhuowen Zhang] EUCLID SOMPZ

• [Yuanye Lin] Consistent gas-phase C/O abundances from UV and optical emission lines: a robust scale for chemical evolution across cosmic time

• [Zhiwei Shao] When Stars Mimic Monsters: Luminous Blue Variables in SBS 0335−052 E

• [Zhibo Chen] Metal-Poor Star-Forming Clumps in Cosmic Noon Galaxies: Evidence for Gas Inflow and Chemical Dilution Using JWST NIRISS

• [Yunzhe Gu] Testing Dark Matter with Generative Models for Extragalactic Stellar Streams

1 Aug, 2025

• [Xin Li] Interpreting nebular emission lines in the high-redshift Universe

• [Yunzhe Gu] The Concordance of Weak Lensing and Escape Velocity Mass Estimates for Galaxy Clusters

• [Zhiwei Shao] The Merger-Driven Formation of Classical Low Surface Brightness Galaxies in Romulus25

• [Yuanye Lin] Quenching Through Tidal Gas Removal: Molecular Gas and Star Formation in Tidal Tails of z ~ 0.7 Post-Starburst Galaxies

17 Jul, 2025

• [Zhuowen Zhang] Euclid: Early Release Observations. A combined strong and weak lensing solution for Abell 2390 beyond its virial radius

• [Zhiwei Shao] The thesan-zoom project: Mystery N/O more — uncovering the origin of peculiar chemical abundances and a not-so-fundamental metallicity relation at 3 < z < 12

• [Yunzhe Gu] From Redshift to Real Space: Combining Linear Theory With Neural Networks

• [Zhibo Chen] Quantifying the Active Galactic Nuclei Fraction in Cosmic Voids via Mid-Infrared Variability

• [Yuanye Lin] Unveiling the galactic baryon cycle process by an empirical model

• [Xin Li] The JWST Spectroscopic Properties of Galaxies at z=9-14

4 Jul, 2025

• [Yunzhe Gu] Resolving the negative neutrino mass with cosmic birefringence

• [Zhibo Chen] Misaligned external gas acquisition boosts central black hole activities

• [Zhuowen Zhang] Simulation-Efficient Cosmological Inference with Multi-Fidelity SBI

• [Xin Li] Calibrating DM_IGM−z relation using host galaxies of FRBs

27 Jun, 2025

• [Zhuowen Zhang] CSST Cosmological Emulator II: Generalized Accurate Halo Mass Function Emulation

• [Yunzhe Gu] Black holes as telescopes: Discovering supermassive binaries through quasi-periodic lensed starlight

• [Zhibo Chen] Impact of the large-scale cosmic web on the X-ray emitting circumgalactic medium

20 Jun, 2025

• [Yunzhe Gu] The Infinity Galaxy: a Candidate Direct-Collapse Supermassive Black Hole Between Two Massive, Ringed Nuclei

• [Zhiwei Shao] Stellar Velocity Dispersion versus Age: Consistency across Observations and Simulations, with the Milky Way as an Outlier

13 Jun, 2025

• [Zhibo Chen] The properties of primordially-seeded black holes and their hosts in the first billion years: implications for JWST

• [Yuanye Lin] Born to be Starless: Revisiting the Missing Satellite Problem

• [Zhiwei Shao] Stellar Mass Segregation in Dark Matter Halos

• [Zhuowen Zhang] A Correlation Between FRB Dispersion Measure and Foreground Large-Scale Structure

• [Yunzhe Gu] To collapse or not to collapse: Halo evolution with self-interacting dark matter mass segregation

6 Jun, 2025

• [Yunzhe Gu] A Correlation Between FRB Dispersion Measure and Foreground Large-Scale Structure

• [Zhibo Chen] Major Mergers Mean Major Offset: Drivers of Intrinsic Scatter in The MGCS −Mh Scaling Relation for Massive Elliptical Galaxies

• [Zhiwei Shao] GalSBI-SPS: a stellar population synthesis-based galaxy population model for cosmology and galaxy evolution applications

• [Yuanye Lin] Deep galaxy stellar mass functions as a function of star formation rate in the Virgo cluster environment

16 May, 2025

• [Zhibo Chen] Formation of first star clusters under the supersonic gas flow – II. Critical halo mass and core mass function

• [Yunzhe Gu] Density modulated star formation efficiency: implications for the observed abundance of ultra-violet luminous galaxies at z>10

• [Zhuowen Zhang] Cosmology with Galaxy Clusters

9 May, 2025

• [Zhibo Chen] The eventful life journey of galaxy clusters I. Impact of DM halo and ICM properties on their full assembly histories

• [Yuanye Lin] MAMMOTH-MOSFIRE: Environmental Effects on Galaxy Interstellar Medium at z ∼ 2

• [Zhiwei Shao] Turning dispersion into signal: density-split analyses of pairwise velocities

25 Apr, 2025

• [Zhibo Chen] Population Models for Star Formation Timescales in Early Galaxies: The First Step Towards Solving Outshining in Star Formation History Inference 

• [Qi'an Deng] Black Hole Survival Guide: Searching for Stars in the Galactic Center That Endure Partial Tidal Disruption

• [Yunzhe Gu] Outer regions of galaxy clusters as a new probe to test modifications to gravity

• [Zhuowen Zhang] Questioning Cosmic Acceleration with DESI: The Big Stall of the Universe

11 Apr, 2025

• [Zhiwei Shao] Unexpected clustering pattern in dwarf galaxies challenges formation models

• [Yuanye Lin] Stripped and Enriched: The Role of Ram–Pressure in Shaping Chemical Enrichment of Galaxies at Intermediate Redshift

• [Yunzhe Gu] Large-scale surveys of the quasar proximity effect

• [Zhibo Chen] Describing the Non-Universal Galaxy Merger Timescales in IllustrisTNG: Effects of Host Halo Mass, Baryons, and Sample Selection

• [Qi'an Deng] Study of barred galaxies in IllustrisTNG100: the case of low surface brightness galaxies

27 Mar, 2025

• [Zhibo Chen] Evidence for Multiple Types of Post-Starburst Galaxies 

• [Zhiwei Shao] A “Black Hole Star” Reveals the Remarkable Gas-Enshrouded Hearts of the Little Red Dots

• [Qi'an Deng] Euclid Quick Data Release (Q1) A first look at the fraction of bars in massive galaxies at z < 1

• [Yunzhe Gu] Massive black hole formation in Population III star clusters

20 Mar, 2025

• [Zhibo Chen] Competitive Accretion and the Baryonic Fraction in Galaxies

• [Zhiwei Shao] Bloodhound Unleashed: Particle-based Substructure Tracking for Cosmological Simulations

• [Zhuowen Zhang] Dark Energy Survey Year 3 Results: Cosmological Constraints from Cluster Abundances, Weak Lensing, and Galaxy Clustering

• [Yuanye Lin] Star formation and stellar & AGN feedback in the absence of accretion, not gas stripping, set the quenching timescale in satellite galaxies

14 Mar, 2025

• [Zhibo Chen] The Impact of Molecular Hydrogen Cooling on the Galaxy Formation Threshold

• [Yuanye Lin] MeerKAT view of Hickson Compact Groups: II. Hi deficiency in the core and surrounding regions

• [Qi'an Deng] Dark matter spiral arms in Milky Way-like halos

• [Zhuowen Zhang] Dark Energy Survey: implications for cosmological expansion models from the final DES Baryon Acoustic Oscillation and Supernova data

• [Yunzhe Gu] The SAMI Galaxy Survey: large-scale environment affects galaxy spin amplitudes and the formation of slow rotators

• [Zhiwei Shao] Little Red Dots as the Very First Activity of Black Hole Growth

7 Mar, 2025

• [Zhiwei Shao] A confirmed deficit of hot and cold dust emission in the most luminous Little Red Dots

• [Qi'an Deng] A physically motivated galaxy size definition across different state-of-the-art hydrodynamical simulations

• [Zhibo Chen] Tracing the cosmological origin of gas that fuels in situ star formation in TNG50 galaxies

• [Yunzhe Gu] Modeling the cool gas clumps in the circumgalactic medium

28 Feb, 2025

• [Yunjia Song] Robust machine learning model of inferring the ex-situ stellar fraction of galaxies from photometric data

• [Zhibo Chen] Clump formation in ram-pressure stripped galaxies: evidence from mass function

• [Zhiwei Shao] Applying a star formation model calibrated on high-resolution interstellar medium simulations to cosmological simulations of galaxy formation

• [Zhuowen Zhang] The DECADE cosmic shear project IV: cosmological constraints from 107 million galaxies across 5,400 deg2 of the sky

• [Yunzhe Gu] The Detection Rate of Associated \mgii\ Absorption Lines in Quasars Depends on Their Radio Emission

21 Feb, 2025

• [Zhibo Chen] Network of velocity-coherent filaments formed by supersonic turbulence in a very-high-velocity HI cloud

• [Zhiwei Shao] The relationship between galaxy size and halo properties: Insights from the IllustrisTNG simulations and differential clustering

• [Zhuowen Zhang] Analysis of the weak lensing mass-richness relation of redMaPPer clusters in the LSST DESC DC2 simulations

• [Qi'an Deng] Dominant Role of Coplanar Inflows in Driving Disk Evolution Revealed by Gas-Phase Metallicity Gradients

• [Yunzhe Gu] The life cycle of giant molecular clouds in simulated Milky Way-mass galaxies

10 Jan, 2025

• [Yunzhe Gu] No evidence (yet) for increased star-formation efficiency at early times

• [Zhibo Chen] Hα-X-ray Surface Brightness Correlation for Filaments in Cooling Flow Clusters 

• [Zhiwei Shao] Dwarf Galaxies in the TNG50 Field: connecting their Star-formation Rates with their Environments

• [Yuanye Lin] The puzzle of isolated and quenched dwarf galaxies in cosmic voids

Links:

• OSU daily coffee: http://www.astronomy.ohio-state.edu/Coffee/coffee.html

• astro-ph: https://arxiv.org/list/astro-ph/new

past years:

• 2024 Fall

• 2024 Spring

website credit: Yunjia Song with format heavily based on the ccapp cosmolunch page at https://sites.google.com/site/ccappcosmolunch.