Publications (59)
The Astrophysical Consequences of Intervening Galaxy Gas on Fast Radio Bursts
J. Xavier Prochaska, Marcel Neeleman
We adopt and analyze results on the incidence and physical properties of damped Ly systems (DLAs) to predict the astrophysical impact of gas in galaxies on observations of Fast…
The Qz5 Survey (I): How the HI Mass Density of the Universe Evolves With Cosmic Time
Grecco A. Oyarzún, Marc Rafelski, Lise Christensen +9
We report that the neutral hydrogen (HI) mass density of the Universe () increases with cosmic time since , peaks at , and then decreases toward $z \si…
A massive HI-absorption-selected galaxy at
Balpreet Kaur, Nissim Kanekar, Marcel Neeleman +4
We use the Karl G. Jansky Very Large Array (VLA) and the Atacama Large Millimeter/submillimeter Array (ALMA) to detect , , and rest-frame 349-GHz continuu…
The Impact of Powerful Jets on the Far-infrared Emission of an Extreme Radio Quasar at z~6
SofÃa Rojas-Ruiz, Eduardo Bañados, Marcel Neeleman +9
The interactions between radio jets and the interstellar medium play a defining role for the co-evolution of central supermassive black holes and their host galaxies, but observati…
The z=7.54 Quasar ULAS J1342+0928 Is Hosted by a Galaxy Merger
Eduardo Banados, Mladen Novak, Marcel Neeleman +9
We present ALMA 0.28"x0.20" (1.4kpc x 1.0kpc) resolution observations of the [CII] 158um line and underlying dust continuum in the host galaxy of the most distant quasar currently…
A [CII]-158-micron Survey of DLA galaxies at z~4: Observations of Dense and Metal-Enriched Neutral Gas within the Circumgalactic Medium of Star-Forming Galaxies
Marcel Neeleman, Nissim Kanekar, J. Xavier Prochaska +2
We present a survey undertaken with the Atacama Large Millimeter/submillimeter Array (ALMA) to study the galaxies associated with a representative sample of 16 damped Ly-alpha abso…
The Decoupled Kinematics of high-z QSO Host Galaxies and their Lya halos
Alyssa Drake, Marcel Neeleman, Bram P. Venemans +7
We present a comparison of the interstellar medium traced by [CII] (ALMA), and ionised halo gas traced by Lya (MUSE), in and around QSO host galaxies at z~6. To date, 18 QSOs at th…
The Qz5 Survey (II): Metallicity Evolution of Damped Lyα Systems Out to z5
Marie Wisz, Marc Rafelski, Grecco Oyarzun +10
Damped Ly absorbers (DLAs) are the highest \HI\ column density (\NHI) absorption line systems detected in the spectra of background quasars. DLAs dominate the neutral gas conte…
No evidence for [CII] halos or high-velocity outflows in z>6 quasar host galaxies
Mladen Novak, Bram P. Venemans, Fabian Walter +13
We study the interstellar medium in a sample of 27 high-redshift quasar host galaxies at z>6, using the [CII] 158um emission line and the underlying dust continuum observed at ~1kp…
[CII] 158 Micron Emission from z~4 HI Absorption-Selected Galaxies
Marcel Neeleman, Nissim Kanekar, J. Xavier Prochaska +2
We report on a search for the [CII] 158 micron emission line from galaxies associated with four high-metallicity damped Ly-alpha absorbers (DLAs) at z ~ 4 using the Atacama Large M…
A high-resolution mosaic of the neutral hydrogen in the M81 triplet
W. J. G. de Blok, Fabian Walter, Annette M. N. Ferguson +10
We present a 3x3 degrees, 105-pointing, high-resolution neutral hydrogen (HI) mosaic of the M81 galaxy triplet (including the galaxies M81, M82 and NGC 3077, as well as dwarf galax…
The most metal-rich damped Lyman alpha systems at z>1.5 I: The Data
Trystyn A. M. Berg, Marcel Neeleman, J. Xavier Prochaska +2
We present HIRES observations for 30 damped Lyman alpha systems, selected on the basis of their large metal column densities from previous, lower resolution data. The measured meta…
Resolved [CII] Emission from z>6 Quasar Host -- Companion Galaxy Pairs
Marcel Neeleman, Eduardo Bañados, Fabian Walter +10
We report on ~0.35"(~2 kpc) resolution observations of the [CII] and dust continuum emission from five z>6 quasar host-companion galaxy pairs obtained with the Atacama Large Millim…
Pushing ALMA to the limit: 140 pc resolution observations of a z=6.6 quasar-galaxy merger resolve strikingly different morphologies of dust continuum and [CII] 158 um emission
Romain A. Meyer, Bram Venemans, Marcel Neeleman +2
We present resolution ALMA observations of [C II] and dust continuum emission of the quasar J0305--3150, resolved over $\sim 300-4…
ALMA 200 pc imaging of a z~7 quasar reveals a compact, disk-like host galaxy
Fabian Walter, Marcel Neeleman, Roberto Decarli +10
We present 0".035 resolution (~200 pc) imaging of the 158 um [CII] line and the underlying dust continuum of the z=6.9 quasar J234833.34-305410.0. The 18 h ALMA observations reveal…
X-ray Observations of a [C II]-bright, z=6.59 Quasar/Companion System
Thomas Connor, Eduardo Bañados, Chiara Mazzucchelli +7
We present deep Chandra observations of PSO J231.657620.8335, a quasar at redshift z=6.59 with a nearby ( proper kpc) companion galaxy. ALMA observed both the quasar an…
Reverberation Mapping of the Kepler-Field AGN KA1858+4850
Liuyi Pei, Aaron J. Barth, Greg S. Aldering +40
KA1858+4850 is a narrow-line Seyfert 1 galaxy at redshift 0.078 and is among the brightest active galaxies monitored by the Kepler mission. We have carried out a reverberation mapp…
The Kinematics of z ~ 6 Quasar Host Galaxies
Marcel Neeleman, Mladen Novak, Bram P. Venemans +9
We explore the kinematics of 27 z~6 quasar host galaxies observed in [CII]-158 micron ([CII]) emission with the Atacama Large Millimeter/sub-millimeter Array at a resolution of ~0.…
Molecular Emission from a Galaxy Associated with a z~2.2 Damped Lyman-alpha Absorber
Marcel Neeleman, Nissim Kanekar, J. Xavier Prochaska +5
Using the Atacama Large Millimeter/sub-millimeter Array, we have detected CO(3-2) line and far-infrared continuum emission from a galaxy associated with a high-metallicity ([M/H] =…
ALMA 360 pc high-frequency observations reveal warm dust in the center of a quasar
Romain A. Meyer, Fabian Walter, Fabio Di Mascia +3
The temperature of the cold dust in z>6 galaxies is a potential tracer of Active Galactic Nucleus (AGN) and stellar feedback, and is the dominant source of uncertainty in inferring…
ALMA and JWST Imaging of Quasars: No Spatial Position Offset Observed Between Quasars and Their Host Galaxies
Aurora Wilde, Marcel Neeleman, Romain Meyer +4
We present a study determining the spatial offset between the position of the supermassive black hole (as traced through their broad line regions) and the host galaxy in six $z > 6…
A [C II] 158m Emitter Associated with an OI Absorber at the End of the Reionization Epoch
Yunjing Wu, Zheng Cai, Marcel Neeleman +12
The physical and chemical properties of the circumgalactic medium (CGM) at have been studied successfully through the absorption in the spectra of background Quasi-Stel…
Probing the Physical Conditions of Atomic Gas at High Redshift
Marcel Neeleman, J. Xavier Prochaska, Arthur. M. Wolfe
A new method is used to measure the physical conditions of the gas in damped Lyman-alpha systems (DLAs). Using high resolution absorption spectra of a sample of 80 DLAs, we are abl…
No evidence for enhanced [OIII] 88um emission in a z~6 quasar compared to its companion starbursting galaxy
Fabian Walter, Dominik Riechers, Mladen Novak +14
We present ALMA band 8 observations of the [OIII] 88um line and the underlying thermal infrared continuum emission in the z=6.08 quasar CFHQS J2100-1715 and its dust-obscured starb…
Metallicity Evolution of Damped Lyman-alpha Systems out to z~5
Marc Rafelski, Arthur M. Wolfe, J. Xavier Prochaska +2
We present chemical abundance measurements for 47 damped Lyman-alpha systems (DLAs), 30 at z>4, observed with the Echellette Spectrograph and Imager and the High Resolution Echelle…
Ly Halos Around Quasars
Alyssa B. Drake, Emanuele Paolo Farina, Marcel Neeleman +5
We present deep MUSE observations of five quasars within the first Gyr of the Universe (), four of which display extended Ly halos. After PSF-subtraction, we reveal…
Jansky Very Large Array detections of CO(1-0) emission in HI-absorption-selected galaxies at
Balpreet Kaur, Nissim Kanekar, Marc Rafelski +3
We report a Karl G. Jansky Very Large Array search for redshifted CO(1-0) emission from three HI-absorption-selected galaxies at , identified earlier in their CO(3-2)…
A quasar-galaxy merger at : black hole mass and quasar properties from the NIRSpec spectrum
Federica Loiacono, Roberto Decarli, Marco Mignoli +31
We present JWST/NIRSpec integral field data of the quasar PJ308-21 at . As shown by previous ALMA and HST imaging, the quasar has two companion sources, interacting with…
An ALMA multi-line survey of the interstellar medium of the redshift 7.5 quasar host galaxy J1342+0928
Mladen Novak, Eduardo Banados, Roberto Decarli +9
We use ALMA observations of the host galaxy of the quasar ULAS-J1342+0928 at z=7.54 to study the dust continuum and far infrared lines emitted from its interstellar medium. The Ray…
The Star Formation Rate Efficiency of Neutral Atomic-dominated Hydrogen Gas in the Outskirts of Star Forming Galaxies from z~1 to z~3
Marc Rafelski, Jonathan P. Gardner, Michele Fumagalli +5
Current observational evidence suggests that the star formation rate (SFR) efficiency of neutral atomic hydrogen gas measured in Damped Ly-alpha Systems (DLAs) at z~3 is more than…
The cold molecular gas in z6 quasar host galaxies
Melanie Kaasinen, Bram Venemans, Kevin C. Harrington +8
Probing the molecular gas reservoirs of z>~6 quasar (QSO) host galaxies is fundamental to understanding the coevolution of star formation and black hole growth in these extreme sys…
A Massive, Dusty HI-Absorption-Selected Galaxy at Identified in a CO Emission Survey
Balpreet Kaur, Nissim Kanekar, Mitchell Revalski +4
We report a NOrthern Extended Millimeter Array (NOEMA) and Atacama Large Millimeter/submillimeter Array (ALMA) search for redshifted CO emission from the galaxies associated with s…
400 pc Imaging of a Massive Quasar Host Galaxy at a Redshift of 6.6
Bram Venemans, Marcel Neeleman, Fabian Walter +4
We report high spatial resolution (~0.076", 410pc) Atacama Large Millimeter/submillimeter Array imaging of the dust continuum and the ionized carbon line [CII] in a luminous quasar…
ALMA [CII] 158um imaging of an HI-Selected Major Merger at z~4
J. Xavier Prochaska, Marcel Neeleman, Nissim Kanekar +1
We present high spatial-resolution (~2kpc) Atacama Large Millimeter/submillimeter Array (ALMA) observations of [CII] 158um and dust-continuum emission from a galaxy at z=3.7978 sel…
A Cold, Massive, Rotating Disk Galaxy 1.5 Billion Years after the Big Bang
Marcel Neeleman, J. Xavier Prochaska, Nissim Kanekar +1
Massive disk galaxies like the Milky Way are expected to form at late times in traditional models of galaxy formation, but recent numerical simulations suggest that such galaxies c…
Kiloparsec-Scale Alignment of a Radio Jet with Cool Gas and Dust in a z~6 Quasar
Fabian Walter, Eduardo Banados, Chris Carilli +11
We present high-angular resolution (0.068", ~400pc) ALMA imaging of the [CII] line and dust continuum emission of PSO J352.4034-15.3373, a radio-loud quasar at z=5.83. The observat…
ALMA 400pc Imaging of a z=6.5 Massive Warped Disk Galaxy
Marcel Neeleman, Fabian Walter, Roberto Decarli +4
We present 0.075 (~400 pc) resolution ALMA observations of the [CII] and dust continuum emission from the host galaxy of the z=6.5406 quasar, P036+03. We find that the emission ari…
The gas and stellar mass of low-redshift damped Lyman- absorbers
Nissim Kanekar, Marcel Neeleman, J. Xavier Prochaska +1
We report Hubble Space Telescope Cosmic Origins Spectrograph far-ultraviolet and Arecibo Telescope H{\sc i} 21cm spectroscopic studies of six damped and sub-damped Lyman- absor…
The HI Content of the Universe over the Past 10 Gyrs
Marcel Neeleman, J. Xavier Prochaska, Joseph Ribaudo +4
We use the Hubble Space Telescope (HST) archive of ultraviolet (UV) quasar spectroscopy to conduct the first blind survey for damped Ly-alpha absorbers (DLAs) at low redshift (z <…
Co-evolution of massive black holes and their host galaxies at high redshift: discrepancies from six cosmological simulations and the key role of JWST
Melanie Habouzit, Masafusa Onoue, Eduardo Banados +7
The James Webb Space Telescope will have the power to characterize high-redshift quasars at z>6 with an unprecedented depth and spatial resolution. While the brightest quasars at s…
ALMA 300 pc resolution imaging of a z=6.79 quasar: no evidence for supermassive black hole influence on the [C II] kinematics
Romain A. Meyer, Marcel Neeleman, Fabian Walter +1
We present Atacama Large Millimeter/submillimeter Array (ALMA) [C II] 158 and dust continuum observations of the quasar J0109--3047 at a resolution of …
Searching for [CII] Emission from the First Sample of OI Absorption-Associated Galaxies with ALMA
Yunjing Wu, Zheng Cai, Jianan Li +13
We report the first statistical analyses of [CII] and dust continuum observations in six strong OI absorber fields at the end of the reionization epoch obtained by the Atacama Larg…
Kiloparsec-scale ALMA Imaging of [CII] and Dust Continuum Emission of 27 Quasar Host Galaxies at z~6
Bram Venemans, Fabian Walter, Marcel Neeleman +12
We present a study of the [CII] 158micron line and underlying far-infrared (FIR) continuum emission of 27 quasar host galaxies at z~6, traced by the Atacama Large Millimeter/submil…
The ALMA Spectroscopic Survey in the HUDF: Multi-band constraints on line luminosity functions and the cosmic density of molecular gas
Roberto Decarli, Manuel Aravena, Leindert Boogaard +20
We present a CO and atomic fine-structure line luminosity function analysis using the ALMA Spectroscopic Survey in the Hubble Ultra Deep Field (ASPECS). ASPECS consists of two spat…
The Evolution of O I over 3.2 < z < 6.5: Reionization of the Circumgalactic Medium
George D. Becker, Max Pettini, Marc Rafelski +11
We present a survey for metal absorption systems traced by neutral oxygen over . Our survey uses Keck/ESI and VLT/X-Shooter spectra of 199 QSOs with redshifts up to…
Reproducing the Kinematics of Damped Lyman-alpha Systems
Simeon Bird, Martin Haehnelt, Marcel Neeleman +3
We examine the kinematic structure of Damped Lyman-alpha Systems (DLAs) in a series of cosmological hydrodynamic simulations using the AREPO code. We are able to match the distribu…
A Comparison of the Stellar, CO and Dust-Continuum Emission from Three, Star-Forming HUDF Galaxies at
Melanie Kaasinen, Fabian Walter, Mladen Novak +17
We compare the extent of the dust, molecular gas and stars in three star-forming galaxies, at and , selected from the Hubble Ultra Deep Field based on their brig…
The Evolution of the Baryons Associated with Galaxies Averaged over Cosmic Time and Space
Fabian Walter, Chris Carilli, Marcel Neeleman +30
We combine the recent determination of the evolution of the cosmic density of molecular gas (H_2) using deep, volumetric surveys, with previous estimates of the cosmic density of s…
Probing the Nature of High Redshift Weak Emission Line Quasars: A Young Quasar with a Starburst Host Galaxy
Irham Taufik Andika, Knud Jahnke, Masafusa Onoue +15
We present the discovery of PSO J083.8371+11.8482, a weak emission line quasar with extreme star formation rate at . This quasar was selected from Pan-STARRS1, UHS, and u…
High Molecular Gas Masses in Absorption-selected Galaxies at
Nissim Kanekar, J. Xavier Prochaska, Marcel Neeleman +5
We have used the Atacama Large Millimeter/submillimeter Array (ALMA) to carry out a search for CO (32) or (43) emission from the fields of 12 high-metallicity ([M/H]~$\geq -0…
The spectral and environment properties of quasar pairs
Elisabeta Lusso, Michele Fumagalli, Marc Rafelski +5
We present the first results from our survey of intervening and proximate Lyman limit systems (LLSs) at 2.0-2.5 using the Wide Field Camera 3 on-board the Hubble Space Tel…
The REQUIEM Survey I: A Search for Extended Ly-Alpha Nebular Emission Around 31 z>5.7 Quasars
Emanuele Paolo Farina, Fabrizio Arrigoni-Battaia, Tiago Costa +19
The discovery of quasars few hundred megayears after the Big Bang represents a major challenge to our understanding of black holes and galaxy formation and evolution. Their luminos…
A quasar-galaxy merger at : rapid host growth via accretion of two massive satellite galaxies
Roberto Decarli, Federica Loiacono, Emanuele Paolo Farina +38
We present JWST/NIRSpec Integral Field Spectroscopy in the rest-frame optical bands of the system PJ308-21, a quasar at caught as its host galaxy interacts with companio…
[CII] 158 micron Emission from the Host Galaxies of Damped Lyman Alpha Systems
Marcel Neeleman, Nissim Kanekar, J. Xavier Prochaska +3
Gas surrounding high redshift galaxies has been studied through observations of absorption line systems toward background quasars for decades. However, it has proven difficult to i…
ALMA and HST kiloparsec-scale imaging of a quasar-galaxy merger at
Roberto Decarli, Massimo Dotti, Eduardo Bañados +12
We present kpc-scale ALMA and HST imaging of the quasar PJ308-21 at =, tracing dust, gas (via the [CII] 158 m line) and young stars. At a resolution of (…
Dissecting the Local Environment of FRB 190608 in the Spiral Arm of its Host Galaxy
Jay S. Chittidi, Sunil Simha, Alexandra Mannings +15
We present a high-resolution analysis of the host galaxy of fast radio burst (FRB)~190608, an SB(r)c galaxy at (hereafter HG 190608), to dissect its local environment a…
A survey of Ly emission around Damped Ly absorbers at with the Keck Cosmic Web Imager
Grecco A. Oyarzun, Marc Rafelski, Nissim Kanekar +3
We present Keck Cosmic Web Imager (KCWI) Ly integral field spectroscopy of the fields surrounding 14 Damped Ly absorbers (DLAs) at . Of these 14 DLAs, 9 have h…
The Rapid Decline in Metallicity of Damped Ly-alpha Systems at z~5
Marc Rafelski, Marcel Neeleman, Michele Fumagalli +2
We present evidence that the cosmological mean metallicity of neutral atomic hydrogen gas shows a sudden decrease at z>4.7 down to <Z>=-2.03(+0.09-0.11), which is 6 sigma deviant f…
The Fundamental Plane of Damped Lyman Alpha Systems
Marcel Neeleman, Arthur M. Wolfe, J. Xavier Prochaska +1
Using a sample of 100 H I - selected damped Lyman alpha (DLA) systems, observed with the High Resolution Echelle Spectrometer on the Keck I telescope, we present evidence that the…