All Outputs (82)

A dusty protocluster surrounding the binary galaxy HerBS-70 at z = 2.3 (2024)
Journal Article

We report on deep SCUBA-2 observations at 850 μm and NOrthern Extended Millimetre Array (NOEMA) spectroscopic measurements at 2 mm of the environment surrounding the luminous, massive (M∗ ≈ 2 × 1011 M☉) Herschel-selected source HerBS-70. This source... Read More about A dusty protocluster surrounding the binary galaxy HerBS-70 at z = 2.3.

Characterization of Herschel-selected strong lens candidates through HST and sub-mm/mm observations (2023)
Journal Article

We have carried out Hubble Space Telescope (HST) snapshot observations at 1.1 μm of 281 candidate strongly lensed galaxies identified in the wide-area extragalactic surveys conducted with the Herschel Space Observatory. Our candidates comprise system... Read More about Characterization of Herschel-selected strong lens candidates through HST and sub-mm/mm observations.

z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: III. Physical properties (2023)
Journal Article

The z-GAL survey observed 137 bright Herschel-selected targets with the IRAM Northern Extended Millimeter Array, with the aim to measure their redshift and study their properties. Several of them have been resolved into multiple sources. Consequently... Read More about z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: III. Physical properties.

z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: I. Overview (2023)
Journal Article

Using the IRAM NOrthern Extended Millimetre Array (NOEMA), we conducted a Large Programme (z-GAL) to measure redshifts for 126 bright galaxies detected in the Herschel Astrophysical Large Area Survey (H-ATLAS), the HerMES Large Mode Survey (HeLMS), a... Read More about z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: I. Overview.

z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: II. Dust properties (2023)
Journal Article

We present the dust properties of 125 bright Herschel galaxies selected from the z-GAL NOEMA spectroscopic redshift survey. All the galaxies have precise spectroscopic redshifts in the range 1.3 < z < 5.4. The large instantaneous bandwidth of NOEMA p... Read More about z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: II. Dust properties.

Polarized thermal emission from dust in a galaxy at redshift 2.6 (2023)
Journal Article

Magnetic fields are fundamental to the evolution of galaxies, playing a key role in the astrophysics of the interstellar medium and star formation. Large-scale ordered magnetic fields have been mapped in the Milky Way and nearby galaxies1,2, but it i... Read More about Polarized thermal emission from dust in a galaxy at redshift 2.6.

The impact of human expert visual inspection on the discovery of strong gravitational lenses (2023)
Journal Article

We investigate the ability of human 'expert' classifiers to identify strong gravitational lens candidates in Dark Energy Survey like imaging. We recruited a total of 55 people that completed more than 25 per cent of the project. During the classifica... Read More about The impact of human expert visual inspection on the discovery of strong gravitational lenses.

Discovering strongly lensed quasar candidates with catalogue-based methods from DESI Legacy Surveys (2023)
Journal Article

Context. The Hubble tension, revealed by a ~5σ discrepancy between measurements of the Hubble-Lemaitre constant among observations of the early and local Universe, is one of the most significant problems in modern cosmology. In order to better unders... Read More about Discovering strongly lensed quasar candidates with catalogue-based methods from DESI Legacy Surveys.

Bright extragalactic ALMA redshift survey (BEARS) III: detailed study of emission lines from 71 Herschel targets (2023)
Journal Article

We analyse the molecular and atomic emission lines of 71 bright Herschel-selected galaxies between redshifts 1.4 and 4.6 detected by the Atacama Large Millimeter/submillimeter Array. These lines include a total of 156 CO, [C i], and H2O emission line... Read More about Bright extragalactic ALMA redshift survey (BEARS) III: detailed study of emission lines from 71 Herschel targets.

Resolved CO(1–0) Emission and Gas Properties in Luminous Dusty Star-forming Galaxies at z = 2–4 (2023)
Journal Article

We present the results of a survey of CO(1−0) emission in 14 infrared luminous dusty star-forming galaxies (DSFGs) at 2 < z < 4 with the NSF’s Karl G. Jansky Very Large Array. All sources are detected in 12CO(1−0), with an angular resolution of ∼1″.... Read More about Resolved CO(1–0) Emission and Gas Properties in Luminous Dusty Star-forming Galaxies at z = 2–4.

The bright extragalactic ALMA redshift survey (BEARS) – II. Millimetre photometry of gravitational lens candidates (2022)
Journal Article

We present 101- and 151-GHz ALMA continuum images for 85 fields selected from Herschel observations that have 500-μm flux densities >80 mJy and 250–500-μm colours consistent with z > 2, most of which are expected to be gravitationally lensed or hyper... Read More about The bright extragalactic ALMA redshift survey (BEARS) – II. Millimetre photometry of gravitational lens candidates.

Modelling high-resolution ALMA observations of strongly lensed dusty star-forming galaxies detected by Herschel (2022)
Journal Article

We present modelling of ∼0.1 arcsec resolution Atacama Large Millimetre/submillimetre Array imaging of seven strong gravitationally lensed galaxies detected by the Herschel Space Observatory. Four of these systems are galaxy-galaxy strong lenses, wit... Read More about Modelling high-resolution ALMA observations of strongly lensed dusty star-forming galaxies detected by Herschel.

The bright extragalactic ALMA redshift survey (BEARS) I: redshifts of bright gravitationally lensed galaxies from the Herschel ATLAS (2022)
Journal Article

We present spectroscopic measurements for 71 galaxies associated with 62 of the brightest high-redshift submillimetre sources from the Southern fields of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS), while targeting 85 sources whi... Read More about The bright extragalactic ALMA redshift survey (BEARS) I: redshifts of bright gravitationally lensed galaxies from the Herschel ATLAS.

Ammonia in the interstellar medium of a starbursting disc at z = 2.6 (2022)
Journal Article

We report the detection of the ground state rotational emission of ammonia, ortho-NH3 (JK = 10 → 00) in a gravitationally lensed intrinsically hyperluminous star-bursting galaxy at z = 2.6. The integrated line profile is consistent with other molecul... Read More about Ammonia in the interstellar medium of a starbursting disc at z = 2.6.

A High-Resolution Investigation of the Multi-Phase ISM in a Galaxy during the First Two Billion Years (2021)
Journal Article

We have carried out the first spatially-resolved investigation of the multi-phase interstellar medium (ISM) at high redshift, using the z = 4.24 strongly-lensed sub-millimetre galaxy H-ATLASJ142413.9+022303 (ID141). We present high-resolution (down t... Read More about A High-Resolution Investigation of the Multi-Phase ISM in a Galaxy during the First Two Billion Years.

Strong lens modelling: comparing and combining Bayesian neural networks and parametric profile fitting (2021)
Journal Article

The vast quantity of strong galaxy–galaxy gravitational lenses expected by future large-scale surveys necessitates the development of automated methods to efficiently model their mass profiles. For this purpose, we train an approximate Bayesian convo... Read More about Strong lens modelling: comparing and combining Bayesian neural networks and parametric profile fitting.

The impact of line-of-sight structures on measuring H0 with strong lensing time-delays (2021)
Journal Article

Close-up view of a luminous star-forming galaxy at z=2.95 (2021)
Journal Article

Exploiting the sensitivity of the IRAM NOrthern Extended Millimeter Array (NOEMA) and its ability to process large instantaneous bandwidths, we have studied the morphology and other properties of the molecular gas and dust in the star forming galaxy,... Read More about Close-up view of a luminous star-forming galaxy at z=2.95.

Auto-identification of unphysical source reconstructions in strong gravitational lens modelling (2021)
Journal Article

With the advent of next-generation surveys and the expectation of discovering huge numbers of strong gravitational lens systems, much effort is being invested into developing automated procedures for handling the data. The several orders of magnitude... Read More about Auto-identification of unphysical source reconstructions in strong gravitational lens modelling.

[N ii] Fine-structure Emission at 122 and 205 ?m in a Galaxy at z = 2.6: A Globally Dense Star-forming Interstellar Medium (2020)
Journal Article

We present new observations with the Atacama Large Millimeter/submillimeter Array of the 122 and 205 ?m fine-structure line emission of singly ionized nitrogen in a strongly lensed starburst galaxy at z = 2.6. The 122/205 ?m [N ii] line ratio is sens... Read More about [N ii] Fine-structure Emission at 122 and 205 ?m in a Galaxy at z = 2.6: A Globally Dense Star-forming Interstellar Medium.