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12 papers · 1 filter
Rapid, out of equilibrium metal enrichment indicated by a flat mass-metallicity relation at z~6 from NIRCam grism spectroscopy
Gauri Kotiwale, Jorryt Matthee, Daichi Kashino +17
We aim to characterise the mass-metallicity relation (MZR) and the 3D correlation between stellar mass, metallicity and star-formation rate (SFR) known as the fundamental metallici…
The Synthetic Absorption Line Spectral Almanac (SALSA)
Dylan Nelson, Celine Peroux, Philipp Richter +10
We create the first large-scale mock spectroscopic survey of gas absorption sightlines traversing the interstellar medium (ISM), circumgalactic medium (CGM), and intergalactic medi…
EIGER VIII: First stars signatures in the connection between OI absorption and Galaxies in the Epoch of Reionization
Jack Higginson, Rongmon Bordoloi, Robert A. Simcoe +8
We investigate the association between galaxies and neutral OI absorption systems at z~6, which trace metal-enriched gas during the epoch of reionization. We identify 40 galaxies a…
The Light Echo of a High-Redshift Quasar mapped with Lyman- Tomography
Anna-Christina Eilers, Minghao Yue, Jorryt Matthee +11
Ultra-violet (UV) radiation from accreting black holes ionizes the intergalactic gas around early quasars, carving out highly ionized bubbles in their surroundings. Any changes in…
Quasar Spectral Energy Distributions in the Rest-Frame EUV: Hubble-COS Spectra of Two Ultra-luminous Quasars
J. Michael Shull, Rongmon Bordoloi, Charles W. Danforth
Using the Cosmic Origins Spectrograph (COS) aboard the Hubble Space Telescope with both far-UV (FUV) and near-UV (NUV) gratings, we measure the ionizing spectra of two bright, inte…
Escape fractions from unattenuated Ly emitters around luminous quasars
Minghao Yue, Anna-Christina Eilers, Jorryt Matthee +7
Ionized proximity zones around luminous quasars provide a unique laboratory to characterize the Ly emission lines from galaxies without significant attenuation from the in…
Project AMIGA: The Inner Circumgalactic Medium of Andromeda from Thick Disk to Halo
Nicolas Lehner, J. Christopher Howk, Lucy Collins +22
The inner circumgalactic medium (CGM) of galaxies, where disk and halo processes intersect, remains poorly characterized despite its critical role in regulating galaxy evolution. W…
Characterizing gas flows through observations of the disk-CGM interface with the HWO
Sanchayeeta Borthakur, Joseph N. Burchett, Frances Cashman +5
How gas gets into, through, and out of galaxies is critical to understanding galactic ecosystems. The disk-CGM interface region is uniquely suited for studying processes that drive…
EIGER VII. The evolving relationship between galaxies and the intergalactic medium in the final stages of reionization
Daichi Kashino, Simon J. Lilly, Jorryt Matthee +7
We present a comprehensive analysis of the relationship between galaxies and the intergalactic medium (IGM) during the late stages of cosmic reionization, based on the complete JWS…
Ultraviolet Properties of Multi-phase Gas Toward the Inner Galaxy
Frances H. Cashman, Andrew J. Fox, Debopam Som +6
We present a systematic study of the multi-phase interstellar gas in the Inner Galaxy using HST/STIS absorption spectroscopy of 16 massive stars located at spectroscopic distances…
A New High-latitude H I Cloud Complex Entrained in the Northern Fermi Bubble
Rongmon Bordoloi, Andrew J. Fox, Felix J. Lockman
We report the discovery of eleven high-velocity HI clouds at Galactic latitudes of 25-30 degrees, likely embedded in the Milky Way's nuclear wind. The clouds are detected with deep…
Spatially Resolved Circumgalactic Medium around a Star-Forming Galaxy Driving a Galactic Outflow at
Ahmed Shaban, Rongmon Bordoloi, John M. O'Meara +6
We report the small-scale spatial variation in cool () Mg II absorption detected in the circumgalactic medium (CGM) of a star-forming galaxy at . The CG…