221 citations · 2.8k across the 68 of their papers we have counts for
15 papers · 1 filter
Molecular Clouds Resolved at the Onset of Cosmic Noon
Bjorn Emonts, Matthew Lehnert, Mingyu Li +10
We present the discovery of seven molecular clouds in the radio galaxy B2 0902+34 at redshift z=3.4. These clouds are detected as CO(0-1) absorption features against the bright rad…
AGN feedback can produce metal enrichment on galaxy scales
Montse Villar-Martin, Carlos López Cobá, Sara Cazzoli +2
Giant (>100 kpc) nebulae associated with active galaxies provide rich information about the circumgalactic medium (CGM) around galaxies, its link with the interstellar medium (ISM)…
Absorption of Millimeter-band CO and CN in the Early Universe: Molecular Clouds in Radio Galaxy B2 0902+34 at Redshift 3.4
Bjorn Emonts, Steve Curran, George Miley +9
Using the Karl G. Jansky Very Large Array (VLA), we have detected absorption lines due to carbon-monoxide, CO(J=0-1), and the cyano radical, CN(N=0-1), associated with radio galaxy…
CO survey of high-z radio galaxies, revisited with ALMA: Jet-cloud Alignments and Synchrotron Brightening by Molecular Gas in the Circumgalactic Environment
Bjorn Emonts, Matthew Lehnert, Sophie Lebowitz +6
Powerful radio sources associated with super-massive black holes are among the most luminous objects in the Universe, and are frequently recognized both as cosmological probes and…
The Dragonfly Galaxy. III. Jet-brightening of a High-redshift Radio Source Caught in a Violent Merger of Disk Galaxies
Sophie Lebowitz, Bjorn Emonts, Donald M. Terndrup +8
The Dragonfly Galaxy (MRC 0152-209), the most infrared-luminous radio galaxy at redshift z~2, is a merger system containing a powerful radio source and large displacements of gas.…
A cosmic stream of atomic carbon gas connected to a massive radio galaxy at redshift 3.8
Bjorn H. C. Emonts, Matthew D. Lehnert, Ilsang Yoon +7
The growth of galaxies in the early Universe is driven by accretion of circum- and inter-galactic gas. Simulations predict that steady streams of cold gas penetrate the dark matter…
Massive molecular outflow and 100 kpc extended cold halo gas in the enormous Ly nebula of QSO 1228+3128
Jianrui Li, Bjorn H. C. Emonts, Zheng Cai +9
The link between the circum-galactic medium (CGM) and the stellar growth of massive galaxies at high- depends on the properties of the widespread cold molecular gas. As part of…
Interactions between the large-scale radio structures and the gas in a sample of optically selected type 2 quasars
Montserrat Villar-Martin, Bjorn Emonts, Antonio Cabrera Lavers +5
The role of radio mode feedback in non radio-loud quasars needs to be explored in depth to determine its true importance. Its effects can be identified based on the evidence of int…
MUSE unravels the ionisation and origin of metal enriched absorbers in the gas halo of a z = 2.92 radio galaxy
S. Kolwa, J. Vernet, C. De Breuck +9
We have used the Multi-Unit Spectroscopic Explorer (MUSE) to study the circumgalactic medium (CGM) of a z = 2.92 radio galaxy, MRC 0943-242 by parametrising its emitting and absorb…
Giant galaxy growing from recycled gas: ALMA maps the circumgalactic molecular medium of the Spiderweb in [CI]
B. H. C. Emonts, M. D. Lehnert, H. Dannerbauer +9
The circumgalactic medium (CGM) of the massive Spiderweb Galaxy, a conglomerate of merging proto-cluster galaxies at z=2.2, forms an enriched interface where feedback and recycling…
Are we seeing accretion flows in a 250kpc-sized Ly-alpha halo at z=3?
J. Vernet, M. D. Lehnert, C. De Breuck +8
Using MUSE on the ESO-VLT, we obtained a 4 hour exposure of the z=3.12 radio galaxy MRC0316-257. We detect features down to ~10^-19 erg/s/cm^2/arcsec^2 with the highest surface bri…
Molecular Gas in the Halo Fuels the Growth of a Massive Cluster Galaxy at High Redshift
B. H. C. Emonts, M. D. Lehnert, M. Villar-Martin +19
The largest galaxies in the Universe reside in galaxy clusters. Using sensitive observations of carbon-monoxide, we show that the Spiderweb Galaxy -a massive galaxy in a distant pr…
Ionized outflows in luminous type 2 AGNs at z<0.6: no evidence for significant impact on the host galaxies
Montse Villar-Martin, Santiago Arribas, Bjorn Emonts +5
We investigate the presence of extended ionized outflows in 18 luminous type 2 AGNs (11 quasars and 7 high luminosity Seyfert 2s) at 0.3<z<0.6 based on VLT-FORS2 spectroscopy. We i…
A CO-rich merger shaping a powerful and hyper-luminous infrared radio galaxy at z=2: the Dragonfly Galaxy
B. H. C. Emonts, M. Y. Mao, A. Stroe +17
In the low-redshift Universe, the most powerful radio sources are often associated with gas-rich galaxy mergers or interactions. We here present evidence for an advanced, gas-rich…
CO(1-0) survey of high-z radio galaxies: alignment of molecular halo gas with distant radio sources
B. H. C. Emonts, R. P. Norris, I. Feain +19
We present a CO(1-0) survey for cold molecular gas in a representative sample of 13 high-z radio galaxies (HzRGs) at 1.4<z<2.8, using the Australia Telescope Compact Array. We dete…