Publications (16)
Discovery of intergalactic bridges connecting two faint quasars
Fabrizio Arrigoni Battaia, Aura Obreja, J. Xavier Prochaska +6
We use MUSE/VLT to conduct a survey of physical quasar pairs at close separation with a fast observation strategy. Our aim is twofold: (i) explore the Ly glow around t…
JWST reveals how black holes are fed: kiloparsec-scale multiphase filaments feed sub-kiloparsec circumnuclear disks
Julie Hlavacek-Larrondo, Hyunseop Choi, Minghao Guo +35
The Centaurus cluster is one of the most important archetypes of radio-mode AGN feedback, with its central galaxy, NGC 4696, launching powerful jets that inflate X-ray cavities and…
REQUIEM-2D: Spatially Resolved Stellar Populations from HST 2D Grism Spectroscopy
Mohammad Akhshik, Katherine E. Whitaker, Gabriel Brammer +13
We present a novel Bayesian methodology to jointly model photometry and deep Hubble Space Telescope (HST) 2d grism spectroscopy of high-redshift galaxies. Our requiem2d code measur…
A spectroscopic sample of massive, evolved z~2 galaxies: Implications for the evolution of the mass-size relation
Jens-Kristian Krogager, Andrew W. Zirm, Sune Toft +2
We present deep, near-infrared HST/WFC3 grism spectroscopy and imaging for a sample of 14 galaxies at z~2 selected from a mass-complete photometric catalog in the COSMOS field. By…
SDSS1133: An Unusually Persistent Transient in a Nearby Dwarf Galaxy
Michael Koss, Laura Blecha, Richard Mushotzky +12
While performing a survey to detect recoiling supermassive black holes, we have identified an unusual source having a projected offset of 800 pc from a nearby dwarf galaxy. The obj…
Quenching of star formation from a lack of inflowing gas to galaxies
Katherine E. Whitaker, Christina C. Williams, Lamiya Mowla +16
Star formation in half of massive galaxies was quenched by the time the Universe was three billion years old. Very low amounts of molecular gas appear responsible for this, at leas…
Gas dynamics in an AGN-host galaxy at : regular rotation, non-circular motions, and mass models
Lingrui Lin, Federico Lelli, Carlos De Breuck +9
The gas dynamics of galaxies provide critical insights into the evolution of both baryons and dark matter (DM) across cosmic time. In this context, galaxies at cosmic noon -- the p…
Star formation efficiency across large-scale galactic environments
Laya Ghodsi, Allison Man, Darko Donevski +4
Environmental effects on the evolution of galaxies have been one of the leading questions in galaxy studies for decades. In this work, we investigate the relationship between the s…
Recent Star-formation in a Massive Slowly-Quenched Lensed Quiescent Galaxy at z=1.88
Mohammad Akhshik, Katherine E. Whitaker, Joel Leja +10
In this letter, we reconstruct the formation pathway of MRG-S0851, a massive, , strongly lensed, red, galaxy at . While the global p…
First detection of CO isotopologues in a high-redshift main-sequence galaxy: evidence of a top-heavy stellar initial mass function
Ziyi Guo, Zhi-Yu Zhang, Zhiqiang Yan +5
Recent observations and theories have presented a strong challenge to the universality of the stellar initial mass function (IMF) in extreme environments. A notable example has bee…
VLT/X-Shooter Near-Infrared Spectroscopy and HST Imaging of Gravitationally-Lensed z~2 Compact Quiescent Galaxies
Stefan Geier, Johan Richard, Allison Man +4
Quiescent massive galaxies at z~2 are thought to be the progenitors of present-day massive ellipticals. Observations revealed them to be extraordinarily compact. The determination…
In pursuit of giants: II. Evolution of dusty quiescent galaxies over the last six billion years from the hCOSMOS survey
Darko Donevski, Ivana Damjanov, Ambra Nanni +11
Quantifying changes in galaxies' interstellar medium (ISM) abundance after quenching star formation is an important aspect of galaxy evolution, but it is poorly constrained beyond…
A Multiwavelength Study of ELAN Environments (AMUSE). Mass budget, satellites spin alignment and gas infall in a massive quasar host halo
Fabrizio Arrigoni Battaia, Chian-Chou Chen, Hau-Yu Baobab Liu +14
The systematic targeting of extended Ly emission around high-redshift quasars resulted in the discovery of rare and bright Enormous Ly Nebulae (ELANe) associated with multi…
Physical Characterization of an Unlensed Dusty Star-Forming Galaxy at
Caitlin M. Casey, Jorge A. Zavala, Manuel Aravena +23
We present a physical characterization of MMJ100026.36+021527.9 (a.k.a. ``MAMBO-9''), a dusty star-forming galaxy (DSFG) at . This is the highest redshift unlensed…
JWST+ALMA reveal the ISM kinematics and stellar structure of MAMBO-9, a merging pair of DSFGs in an overdense environment at
Hollis B. Akins, Caitlin M. Casey, Jaclyn B. Champagne +14
We present high-resolution ALMA [CII] 158 micron observations and JWST/NIRCam+MIRI imaging of MAMBO-9, a pair of optically-dark, dusty star-forming galaxies at . MAMBO-9 is…
Star formation quenching in massive galaxies
Allison Man, Sirio Belli
Understanding how and why star formation turns off in massive galaxies is a major challenge for studies of galaxy evolution. Many theoretical explanations have been proposed, but a…