Kavli Affiliate: Kohei Inayoshi | Summary:We report the identification of a pair of faint little red dots (LRDs), dubbed Red Eyes, in a strongly-lensed galaxy at $zsim7$ behind the PLCKG004.5-10.5 cluster, identified from the JWST Treasury program VENUS. Red Eyes are spatially resolved on the image plane with distinct colors, while the critical curve lies […]
Kavli Affiliate: Linhua Jiang | Summary:Reionization marks one of the most important phase transitions in the history of the Universe, during which neutral baryonic matter was transformed into ionized plasma. While star-forming galaxies are widely regarded as the primary drivers of this process, the extent to which active galactic nuclei (AGNs) contribute remains a subject […]
Kavli Affiliate: Luis Ho | Summary:To investigate the formation and evolution of vertical structures in disk galaxies, we measure global $operatornamesech^2$ scale heights, averaging thin and thick components when present, for 2631 edge-on disk galaxies with $M_*>10^10 M_odot$ at $0<z<3.5$ from the JWST COSMOS-Web survey. We show that dust extinction systematically overestimates scale heights at […]
Kavli Affiliate: Kohei Inayoshi | Summary:Observing supernovae (SNe) in the early Universe (z > 3) provides a window into how both galaxies and individual stars have evolved over cosmic time, yet a detailed study of high-redshift stars and SNe has remained difficult due to their extreme distances and cosmological redshifting. To overcome the former, searches […]
Kavli Affiliate: Claudio Ricci | Summary:We present JWST/MIRI imaging of eight nearby Active Galactic Nuclei (AGN) from the GATOS survey to investigate the physical conditions of extended dust in their narrow line regions (NLRs). In four galaxies (ESO 428-G14, NGC 4388, NGC 3081, and NGC 5728), we detect spatially resolved dust structures extending ~100-200 pc […]
Kavli Affiliate: Feng Long| Summary: Pebble drift is an important mechanism for supplying the materials needed to build planets in the inner region of protoplanetary disks. Thus, constraining pebble drift’s timescales and mass flux is essential to understanding planet formation history. Current pebble drift models suggest pebble fluxes can be constrained from the enhancement of […]
Kavli Affiliate: Rainer Spurzem | Summary:Star-gas interactions can provide gravitational feedback that influences the dynamical evolution of stellar clusters, through processes such as dynamical friction (DF) and its non-dissipative counterpart, negative dynamical friction (NDF). Using the textttPeTar code, we perform direct $N$-body simulations of an open cluster initially containing $10^4$ stars, evolving within a gaseous […]
Kavli Affiliate: Subo Dong | Summary:A population of free-floating planets is known from gravitational microlensing surveys. None have a directly measured mass, owing to a degeneracy with the distance, but the population statistics indicate that many are less massive than Jupiter. We report a microlensing event — KMT-2024-BLG-0792/OGLE-2024-BLG-0516, which was observed from both ground- and […]
Kavli Affiliate: Rainer Spurzem | Summary:From NBODY1 to NBODY6 : The Growth of an Industry is the title of a 1999 invited review by Sverre Aarseth, for Publications of the Astronomical Society of the Pacific (PASP). I took this as an inspiration for the title of this paper; it describes how Sverres NBODY Industry has […]
Kavli Affiliate: Claudio Ricci | Summary:The origin and production mechanisms of high-energy astrophysical neutrinos remain open questions in multimessenger astronomy. Previous studies have hinted at a possible linear correlation between the hard X-ray and high-energy neutrino emission in active galactic nuclei. New textitNuSTAR observations, first presented here, reveal that blazar PKS 1424+240, located within a […]