14 citations · 39 across the 18 of their papers we have counts for
18 papers
Tracing Warm Gas through C IV Radiative Transfer
Jin Lim, Seok-Jun Chang, Max Gronke +3
The C IV resonance doublet is a key tracer of warm gas () within and around galaxies. Recent observations have detected this line in both ab…
The Impact of Circumgalactic Rotation on Ly Radiative Transfer
Hee-Gyeong Kym, Seok-Jun Chang, Max Gronke +1
Hydrogen Lyman-alpha (Ly) is a prominent emission line from the circumgalactic medium (CGM). Due to its resonant nature, Ly carries imprints of the physical properties and ki…
SPURS: Evidence for Clumpy Neutral Envelopes and Ionized IGM Surrounding Little Red Dots in Abell 2744 from Ultra-Deep Rest-UV Spectroscopy
Mengtao Tang, Daniel P. Stark, Charlotte A. Mason +14
Rest-frame ultraviolet (UV) spectra of Little Red Dots (LRDs) often show Ly emission. Along with broad Balmer emission, LRDs are expected to produce broad Ly emission. Howeve…
The MUSE Ultra Deep Field (MUDF) VIII. The cool gas distribution surrounding galaxies at redshifts z ~ 0.5-2
Edoardo Santo, Michele Fumagalli, Seok-Jun Chang +5
We use deep MUSE data from the MUDF survey to investigate the cool gas around galaxies at redshifts 0.5 < z < 2. We constructed two samples: one sample for a down-the-barrel analys…
The Engine and its Flows: Little Red Dot spectra are shaped by the column densities of their gas envelopes
Jorryt Matthee, Alberto Torralba, Gabriele Pezzulli +23
JWST data have enabled the abundant identification of compact broad Balmer line sources nicknamed the Little Red Dots. While they share broad lines with active galactic nuclei, the…
ODIN: Searching for LyC emission from Lyman- emitters at in the E-COSMOS and XMM-LSS fields
Eunsuk Seo, Hyunmi Song, Lucia Guaita +18
We investigated Lyman-continuum (LyC) emission from Lyman- emitters (LAEs) at , identified in the One-hundred-deg DECam Imaging in Narrowbands (ODIN) survey. Of the 7…
Overmassive black holes and little red dots naturally form in simulations
Sunmyon Chon, Shingo Hirano, Tomoaki Ishiyama +2
The origin of supermassive black holes (SMBHs) remains a long-standing problem in astrophysics. Recent JWST observations reveal an unexpectedly abundant population of overmassive b…
ODIN: A New Lyman Alpha Blob Selection Method, Sample, and Statistical Analysis at
Byeongha Moon, Yujin Yang, Kyoung-Soo Lee +26
Ly blobs (LABs) are large, spatially extended Ly-emitting objects whose nature remains unclear. Their statistical properties such as number densities and luminosity functions…
The warm outer layer of a Little Red Dot as the source of [Fe II] and collisional Balmer lines with scattering wings
Alberto Torralba, Jorryt Matthee, Gabriele Pezzulli +22
The population of the Little Red Dots (LRDs) may represent a key phase of supermassive black hole (SMBH) growth. A cocoon of dense excited gas is emerging as key component to expla…
Lyman- Escape through Anisotropic Media
Silvia Almada Monter, Max Gronke, Seok-Jun Chang
The escape of Lyman- (Ly) radiation encodes valuable information on the neutral interstellar medium and is often used as a proxy for the escape of ionizing photons. Yet, the…
Impact of Resonance, Raman, and Thomson Scattering on Hydrogen Line Formation in Little Red Dots
Seok-Jun Chang, Max Gronke, Jorryt Matthee +1
Little Red Dots (LRDs) are compact sources at discovered through JWST spectroscopy. Their spectra exhibit broad Balmer emission lines (), alongside…
Ruling out dominant electron scattering in Little Red Dots' Rosetta Stone using multiple hydrogen lines
Matilde Brazzini, Francesco D'Eugenio, Roberto Maiolino +3
The majority of Little Red Dots (LRDs) hosting Active Galactic Nuclei (AGN) exhibits broad H emission, which recent studies propose originates from scattering off free electrons…
Evidence of a Disk-wind Origin for Fluorescent H in Classical T Tauri Stars
Matt Kalscheur, Kevin France, Brunella Nisini +8
We use FUV spectra of 36 T Tauri stars, predominately from 's ULLYSES program, to examine the kinematic properties of fluorescent H emission li…
Modeling Mg II resonance doublet spectra from galaxy haloes at z 1
Seok-Jun Chang, Rajeshwari Dutta, Max Gronke +3
We investigate the properties of cold gas at around star-forming galaxies at using Mg II spectra through radiative transfer modeling. We utilize a comprehen…
A Model of the C IV 1548, 1550 Doublet Line in T Tauri Stars
Thanawuth Thanathibodee, Connor Robinson, Nuria Calvet +7
The C IV doublet in the UV has long been associated with accretion in T Tauri stars. However, it is still unclear where and how the lines are formed. Here, we present a new C IV li…
Probing cold gas with Mg II and Ly radiative transfer
Seok-Jun Chang, Max Gronke
The Mg II resonance doublet at 2796 Å and 2803 Å is an increasingly important tool to study cold, K, gas -- an observational driven development requiring theoretic…
A Morpho-Kinematic Study of the Enigmatic Emission Nebula NGC 6164/5 Surrounding the Magnetic O-type Star HD 148937
Beomdu Lim, Yael Naze, Seok-Jun Chang +1
HD 148937 is a peculiar massive star (Of?p) with a strong magnetic field (1kG). The hourglass-shaped emission nebula NGC 6164/5 surrounds this star. This nebula is presumed to orig…
First Detection and Modeling of Spatially Resolved Ly in TW Hya
Seok-Jun Chang, Nicole Arulanantham, Max Gronke +2
Lyman- (Ly) is the strongest emission line in the accretion-generated UV spectra from T-Tauri stars and, as such, plays a critical role in regulating chemistry within the sur…