Stellar splashback: the edge of the intracluster light (2020)
Journal Article
Deason, A. J., Oman, K. A., Fattahi, A., Schaller, M., Jauzac, M., Zhang, Y., …Evans, T. A. (2021). Stellar splashback: the edge of the intracluster light. Monthly Notices of the Royal Astronomical Society, 500(3), 4181-4192. https://doi.org/10.1093/mnras/staa3590

We examine the outskirts of galaxy clusters in the C-EAGLE simulations to quantify the ‘edges’ of the stellar and dark matter distribution. The radius of the steepest slope in the dark matter, commonly used as a proxy for the splashback radius, is lo... Read More about Stellar splashback: the edge of the intracluster light.

Reconciling galaxy cluster shapes, measured by theorists vs observers (2020)
Journal Article
Harvey, D., Robertson, A., Tam, S., Jauzac, M., Massey, R., Rhodes, J., & McCarthy, I. G. (2021). Reconciling galaxy cluster shapes, measured by theorists vs observers. Monthly Notices of the Royal Astronomical Society, 500(2), 2627-2644. https://doi.org/10.1093/mnras/staa3193

If properly calibrated, the shapes of galaxy clusters can be used to investigate many physical processes: from feedback and quenching of star formation, to the nature of dark matter. Theorists frequently measure shapes using moments of inertia of sim... Read More about Reconciling galaxy cluster shapes, measured by theorists vs observers.

Molecular gas and star formation activity in luminous infrared galaxies in clusters at intermediate redshifts (2020)
Journal Article
Castignani, G., Jablonka, P., Combes, F., Haines, C., Rawle, T., Jauzac, M., …Bigiel, F. (2020). Molecular gas and star formation activity in luminous infrared galaxies in clusters at intermediate redshifts. Astronomy & Astrophysics, 640, Article A64. https://doi.org/10.1051/0004-6361/201937190

We investigate the role of dense megaparsec-scale environments in processing molecular gas of cluster galaxies as they fall into the cluster cores. We selected a sample of ∼20 luminous infrared galaxies (LIRGs) belonging to intermediate-redshift clus... Read More about Molecular gas and star formation activity in luminous infrared galaxies in clusters at intermediate redshifts.

The distribution of dark matter and gas spanning 6 Mpc around the post-merger galaxy cluster MS 0451-03 (2020)
Journal Article
Tam, S., Jauzac, M., Massey, R., Harvey, D., Eckert, D., Ebeling, H., …Smith, G. (2020). The distribution of dark matter and gas spanning 6 Mpc around the post-merger galaxy cluster MS 0451-03. Monthly Notices of the Royal Astronomical Society, 496(3), 4032-4050. https://doi.org/10.1093/mnras/staa1828

Using the largest mosaic of Hubble Space Telescope images around a galaxy cluster, we map the distribution of dark matter throughout an ∼6 × 6 Mpc2 area centred on the cluster MS 0451−03 (z = 0.54, M200=1.65×1015M⊙⁠). Our joint strong- and weak-lensi... Read More about The distribution of dark matter and gas spanning 6 Mpc around the post-merger galaxy cluster MS 0451-03.

Mapping dark matter and finding filaments: calibration of lensing analysis techniques on simulated data (2020)
Journal Article
Tam, S., Massey, R., Jauzac, M., & Robertson, A. (2020). Mapping dark matter and finding filaments: calibration of lensing analysis techniques on simulated data. Monthly Notices of the Royal Astronomical Society, 496(3), 3973-3990. https://doi.org/10.1093/mnras/staa1756

We quantify the performance of mass mapping techniques on mock imaging and gravitational lensing data of galaxy clusters. The optimum method depends upon the scientific goal. We assess measurements of clusters’ radial density profiles, departures fro... Read More about Mapping dark matter and finding filaments: calibration of lensing analysis techniques on simulated data.

What does strong gravitational lensing? The mass and redshift distribution of high-magnification lenses (2020)
Journal Article
Robertson, A., Smith, G. P., Massey, R., Eke, V., Jauzac, M., Bianconi, M., & Ryczanowski, D. (2020). What does strong gravitational lensing? The mass and redshift distribution of high-magnification lenses. Monthly Notices of the Royal Astronomical Society, 495(4), 3727-3739. https://doi.org/10.1093/mnras/staa1429

Many distant objects can only be detected, or become more scientifically valuable, if they have been highly magnified by strong gravitational lensing. We use eagle and bahamas, two recent cosmological hydrodynamical simulations, to predict the probab... Read More about What does strong gravitational lensing? The mass and redshift distribution of high-magnification lenses.

Download by parachute: retrieval of assets from high altitude balloons (2020)
Journal Article
Sirks, E., Clark, P., Massey, R., Benton, S., Brown, A., Damaren, C., …Tam, S. (2020). Download by parachute: retrieval of assets from high altitude balloons. Journal of Instrumentation, 15(05), Article P05014. https://doi.org/10.1088/1748-0221/15/05/p05014

We present a publicly-available toolkit of flight-proven hardware and software to retrieve 5 TB of data or small physical samples from a stratospheric balloon platform. Before launch, a capsule is attached to the balloon, and rises with it. Upon remo... Read More about Download by parachute: retrieval of assets from high altitude balloons.

On building a cluster watch-list for identifying strongly lensed supernovae, gravitational waves and kilonovae (2020)
Journal Article
Ryczanowski, D., Smith, G. P., Bianconi, M., Massey, R., Robertson, A., & Jauzac, M. (2020). On building a cluster watch-list for identifying strongly lensed supernovae, gravitational waves and kilonovae. Monthly Notices of the Royal Astronomical Society, 495(2), 1666-1671. https://doi.org/10.1093/mnras/staa1274

Motivated by discovering strongly-lensed supernovae, gravitational waves, and kilonovae in the 2020s, we investigate whether to build a watch-list of clusters based on observed cluster properties (i.e. lens-plane selection) or on the detectability of... Read More about On building a cluster watch-list for identifying strongly lensed supernovae, gravitational waves and kilonovae.

The BUFFALO HST Survey (2020)
Journal Article
Steinhardt, C. L., Jauzac, M., Acebron, A., Atek, H., Capak, P., Davidzon, I., …Zitrin, A. (2020). The BUFFALO HST Survey. Astrophysical Journal Supplement, 247(2), Article 64. https://doi.org/10.3847/1538-4365/ab75ed

The Beyond Ultra-deep Frontier Fields and Legacy Observations (BUFFALO) is a 101 orbit + 101 parallel Cycle 25 Hubble Space Telescope (HST) Treasury program taking data from 2018 to 2020. BUFFALO will expand existing coverage of the Hubble Frontier F... Read More about The BUFFALO HST Survey.

Setting the scene for BUFFALO: a study of the matter distribution in the HFF galaxy cluster MACS J0416.1−2403 and its parallel field (2020)
Journal Article
Steinhardt, C., Remolina Gonzalez, J., Diego, J., Connor, T., Clowe, D., Barnes, D., …Gonzalez, E. (2020). Setting the scene for BUFFALO: a study of the matter distribution in the HFF galaxy cluster MACS J0416.1−2403 and its parallel field. Monthly Notices of the Royal Astronomical Society, 494(1), 349-362. https://doi.org/10.1093/mnras/staa745

In the context of the Beyond Ultradeep Frontier Fields And Legacy Observations (BUFFALO) survey, we present a new analysis of the merging galaxy cluster MACS J0416.1−2403 (z = 0.397) and its parallel field using Hubble Frontier Fields (HFF) data. We... Read More about Setting the scene for BUFFALO: a study of the matter distribution in the HFF galaxy cluster MACS J0416.1−2403 and its parallel field.

Robust diffraction-limited near-infrared-to-near-ultraviolet wide-field imaging from stratospheric balloon-borne platforms—Super-pressure Balloon-borne Imaging Telescope performance (2020)
Journal Article
Romualdez, L. J., Benton, S. J., Brown, A. M., Clark, P., Damaren, C. J., Eifler, T., …Tam, S. (2020). Robust diffraction-limited near-infrared-to-near-ultraviolet wide-field imaging from stratospheric balloon-borne platforms—Super-pressure Balloon-borne Imaging Telescope performance. Review of Scientific Instruments, 91(3), Article 034501. https://doi.org/10.1063/1.5139711

At a fraction of the total cost of an equivalent orbital mission, scientific balloon-borne platforms, operating above 99.7% of the Earth’s atmosphere, offer attractive, competitive, and effective observational capabilities—namely, space-like seeing,... Read More about Robust diffraction-limited near-infrared-to-near-ultraviolet wide-field imaging from stratospheric balloon-borne platforms—Super-pressure Balloon-borne Imaging Telescope performance.

hybrid-lenstool: a self-consistent algorithm to model galaxy clusters with strong- and weak-lensing simultaneously (2020)
Journal Article
Richard, J., Natarajan, P., Kneib, J., Sharon, K., Limousin, M., Jullo, E., …Niemiec, A. (2020). hybrid-lenstool: a self-consistent algorithm to model galaxy clusters with strong- and weak-lensing simultaneously. Monthly Notices of the Royal Astronomical Society, 493(3), 3331-3340. https://doi.org/10.1093/mnras/staa473

We present a new galaxy cluster lens modelling approach, hybrid-LENSTOOL, that is implemented in the publicly available modelling software LENSTOOL. hybrid-LENSTOOL combines a parametric approach to model the core of the cluster, and a non-parametric... Read More about hybrid-lenstool: a self-consistent algorithm to model galaxy clusters with strong- and weak-lensing simultaneously.