Outputs (131)

Measuring cavity powers of active galactic nuclei in clusters using a hybrid X-ray–radio method. A new window on feedback opened by subarcsecond LOFAR-VLBI observations (2022)
Journal Article
Timmerman, R., van Weeren, R., Botteon, A., Röttgering, H., McNamara, B., Sweijen, F., Bîrzan, L., & Morabito, L. (2022). Measuring cavity powers of active galactic nuclei in clusters using a hybrid X-ray–radio method. A new window on feedback opened by subarcsecond LOFAR-VLBI observations. Astronomy & Astrophysics, 668, Article A65. https://doi.org/10.1051/0004-6361/202243936

Measurements of the quantity of radio-mode feedback injected by an active galactic nucleus into the cluster environment have mostly relied on X-ray observations, which reveal cavities in the intracluster medium excavated by the radio lobes. However,... Read More about Measuring cavity powers of active galactic nuclei in clusters using a hybrid X-ray–radio method. A new window on feedback opened by subarcsecond LOFAR-VLBI observations.

Testing strong lensing subhalo detection with a cosmological simulation (2022)
Journal Article
He, Q., Nightingale, J., Robertson, A., Amvrosiadis, A., Cole, S., Frenk, C. S., Massey, R., Li, R., Amorisco, N. C., Metcalf, R. B., Cao, X., & Etherington, A. (2023). Testing strong lensing subhalo detection with a cosmological simulation. Monthly Notices of the Royal Astronomical Society, 518(1), 220-239. https://doi.org/10.1093/mnras/stac2779

Strong gravitational lensing offers a compelling test of the cold dark matter paradigm, as it allows for subhaloes with masses of ∼109 M⊙ and below to be detected. We test commonly-used techniques for detecting subhaloes superposed in images of stron... Read More about Testing strong lensing subhalo detection with a cosmological simulation.

SWIFT J0503.7-2819: A nearly synchronous intermediate polar below the period gap? (2022)
Journal Article
Rawat, N., Pandey, J., Joshi, A., Scaringi, S., & Yadava, U. (2022). SWIFT J0503.7-2819: A nearly synchronous intermediate polar below the period gap?. Monthly Notices of the Royal Astronomical Society, 517(2), 1667-1677. https://doi.org/10.1093/mnras/stac2723

Based on the X-ray observations from XMM-Newton and Swift, and optical observations from Transiting Exoplanet Survey Satellite (TESS) and AAVSO, we present temporal and spectral properties of probable intermediate polar SWIFT J0503.7-2819. The X-ray... Read More about SWIFT J0503.7-2819: A nearly synchronous intermediate polar below the period gap?.

Revealing galaxy candidates out to z ∼ 16 with JWST observations of the lensing cluster SMACS0723 (2022)
Journal Article
Atek, H., Shuntov, M., Furtak, L. J., Richard, J., Kneib, J.-P., Mahler, G., Zitrin, A., McCracken, H., Charlot, S., Chevallard, J., & Chemerynska, I. (2023). Revealing galaxy candidates out to z ∼ 16 with JWST observations of the lensing cluster SMACS0723. Monthly Notices of the Royal Astronomical Society, 519(1), 1201 - 1220. https://doi.org/10.1093/mnras/stac3144

One of the main goals of the JWST is to study the first galaxies in the Universe. We present a systematic photometric analysis of very distant galaxies in the first JWST deep field towards the massive lensing cluster SMACS0723. As a result, we report... Read More about Revealing galaxy candidates out to z ∼ 16 with JWST observations of the lensing cluster SMACS0723.

JWST PEARLS. Prime Extragalactic Areas for Reionization and Lensing Science: Project Overview and First Results (2022)
Journal Article
Windhorst, R. A., Cohen, S. H., Jansen, R. A., Summers, J., Tompkins, S., Conselice, C. J., Driver, S. P., Yan, H., Coe, D., Frye, B., Grogin, N., Koekemoer, A., Marshall, M. A., O’Brien, R., Pirzkal, N., Robotham, A., Ryan, R. E., Willmer, C. N., Carleton, T., Diego, J. M., …Zhao, X. (2023). JWST PEARLS. Prime Extragalactic Areas for Reionization and Lensing Science: Project Overview and First Results. Astronomical Journal, 165(1), Article 13. https://doi.org/10.3847/1538-3881/aca163

We give an overview and describe the rationale, methods, and first results from NIRCam images of the JWST “Prime Extragalactic Areas for Reionization and Lensing Science” (PEARLS) project. PEARLS uses up to eight NIRCam filters to survey several prim... Read More about JWST PEARLS. Prime Extragalactic Areas for Reionization and Lensing Science: Project Overview and First Results.

The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI) (2022)
Journal Article
Silber, J. H., Fagrelius, P., Fanning, K., Schubnell, M., Aguilar, J. N., Ahlen, S., Ameel, J., Ballester, O., Baltay, C., Bebek, C., Beard, D. B., Besuner, R., Cardiel-Sas, L., Casas, R., Castander, F. J., Claybaugh, T., Dobson, C., Duan, Y., Dunlop, P., Edelstein, J., …Zou, H. (2023). The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI). Astronomical Journal, 165(1), Article 9. https://doi.org/10.3847/1538-3881/ac9ab1

A system of 5,020 robotic fiber positioners was installed in 2019 on the Mayall Telescope, at Kitt Peak National Observatory. The robots automatically re-target their optical fibers every 10 - 20 minutes, each to a precision of several microns, with... Read More about The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI).

XGAPS: a sub-arcsec cross-match of galactic plane surveys (2022)
Journal Article
Scaringi, S., Monguió, M., Knigge, C., Fratta, M., Gänsicke, B., Groot, P., Rebassa-Mansergas, A., & Toloza, O. (2022). XGAPS: a sub-arcsec cross-match of galactic plane surveys. Monthly Notices of the Royal Astronomical Society, 518(2), 3137-3146. https://doi.org/10.1093/mnras/stac3353

We present a sub-arcsec cross-match of Gaia Data Release 3 (DR3) against the INT Galactic Plane Surveys (IGAPS) and the United Kingdom Infrared Deep Sky Survey (UKIDSS). The resulting cross-match of Galactic Plane Surveys (XGAPS) provides additional... Read More about XGAPS: a sub-arcsec cross-match of galactic plane surveys.

Spectroscopic follow-up of a subset of the Gaia/IPHAS catalogue of Hα-excess sources (2022)
Journal Article
Fratta, M., Scaringi, S., Monguió, M., Pala, A., Drew, J., Knigge, C., Iłkiewicz, K., & Gandhi, P. (2022). Spectroscopic follow-up of a subset of the Gaia/IPHAS catalogue of Hα-excess sources. Monthly Notices of the Royal Astronomical Society, 518(3), 3301-3311. https://doi.org/10.1093/mnras/stac3216

State-of-the-art techniques to identify Hα emission-line sources in narrow-band photometric surveys consist of searching for  Hα excess with reference to nearby objects in the sky (position-based selection). However, while this approach usually yield... Read More about Spectroscopic follow-up of a subset of the Gaia/IPHAS catalogue of Hα-excess sources.

QWIND3: UV line-driven accretion disc wind models for AGN feedback (2022)
Journal Article
Quera-Bofarull, A., Done, C., Lacey, C. G., Nomura, M., & Ohsuga, K. (2023). QWIND3: UV line-driven accretion disc wind models for AGN feedback. Monthly Notices of the Royal Astronomical Society, 518(2), 2693-2711. https://doi.org/10.1093/mnras/stac3171

The ultraviolet (UV) bright accretion disc in active galactic nuclei (AGNs) should give rise to line driving, producing a powerful wind that may play an important role in AGN feedback as well as in producing structures like the broad-line region. How... Read More about QWIND3: UV line-driven accretion disc wind models for AGN feedback.

Outer disc edge: properties of low-frequency aperiodic variability in ultracompact interacting binaries (2022)
Journal Article
Veresvarska, M., & Scaringi, S. (2022). Outer disc edge: properties of low-frequency aperiodic variability in ultracompact interacting binaries. Monthly Notices of the Royal Astronomical Society, 518(4), 5576-5589. https://doi.org/10.1093/mnras/stac3470

Flickering, and more specifically aperiodic broad-band variability, is an important phenomenon used in understanding the geometry and dynamics of accretion flows. Although the inner regions of accretion flows are known to generate variability on rela... Read More about Outer disc edge: properties of low-frequency aperiodic variability in ultracompact interacting binaries.

MIGHTEE: deep 1.4 GHz source counts and the sky temperature contribution of star-forming galaxies and active galactic nuclei (2022)
Journal Article
Hale, C., Whittam, I., Jarvis, M., Best, P., Thomas, N., Heywood, I., Prescott, M., Adams, N., Afonso, J., An, F., Bowler, R., Collier, J., Cook, R., Davé, R., Frank, B., Glowacki, M., Hatfield, P., Kolwa, S., Lovell, C., Maddox, N., …Taylor, A. (2023). MIGHTEE: deep 1.4 GHz source counts and the sky temperature contribution of star-forming galaxies and active galactic nuclei. Monthly Notices of the Royal Astronomical Society, 520(2), 2668 - 2691. https://doi.org/10.1093/mnras/stac3320

We present deep 1.4 GHz source counts from ∼5 deg2 of the continuum Early Science data release of the MeerKAT International Gigahertz Tiered Extragalactic Exploration survey down to S1.4GHz ∼15 μ Jy. Using observations over two extragalactic fields (... Read More about MIGHTEE: deep 1.4 GHz source counts and the sky temperature contribution of star-forming galaxies and active galactic nuclei.

A sparse regression approach for populating dark matter haloes and subhaloes with galaxies (2022)
Journal Article
Icaza-Lizaola, M., Bower, R. G., Norberg, P., Cole, S., & Schaller, M. (2022). A sparse regression approach for populating dark matter haloes and subhaloes with galaxies. Monthly Notices of the Royal Astronomical Society, 518(2), 2903-2920. https://doi.org/10.1093/mnras/stac3265

We use sparse regression methods (SRMs) to build accurate and explainable models that predict the stellar mass of central and satellite galaxies as a function of properties of their host dark matter haloes. SRMs are machine learning algorithms that p... Read More about A sparse regression approach for populating dark matter haloes and subhaloes with galaxies.

The demographics of obscured AGN from X-ray spectroscopy guided by multiwavelength information (2022)
Journal Article
Laloux, B., Georgakakis, A., Andonie, C., Alexander, D. M., Ruiz, A., Rosario, D. J., Aird, J., Buchner, J., Carrera, F. J., Lapi, A., Ramos Almeida, C., Salvato, M., & Shankar, F. (2023). The demographics of obscured AGN from X-ray spectroscopy guided by multiwavelength information. Monthly Notices of the Royal Astronomical Society, 518(2), 2546-2566. https://doi.org/10.1093/mnras/stac3255

A complete census of active galactic nuclei (AGNs) is a prerequisite for understanding the growth of supermassive black holes across cosmic time. A significant challenge towards this goal is the whereabouts of heavily obscured AGN that remain uncerta... Read More about The demographics of obscured AGN from X-ray spectroscopy guided by multiwavelength information.

Lessons learned from the two largest Galaxy morphological classification catalogues built by convolutional neural networks (2022)
Journal Article
Cheng, T.-Y., Domínguez Sánchez, H., Vega-Ferrero, J., Conselice, C., Siudek, M., Aragón-Salamanca, A., Bernardi, M., Cooke, R., Ferreira, L., Huertas-Company, M., Krywult, J., Palmese, A., Pieres, A., Plazas Malagón, A., Carnero Rosell, A., Gruen, D., Thomas, D., Bacon, D., Brooks, D., James, D., …Scarpine, V. (2023). Lessons learned from the two largest Galaxy morphological classification catalogues built by convolutional neural networks. Monthly Notices of the Royal Astronomical Society, 518(2), 2794-2809. https://doi.org/10.1093/mnras/stac3228

We compare the two largest galaxy morphology catalogues, which separate early- and late-type galaxies at intermediate redshift. The two catalogues were built by applying supervised deep learning (convolutional neural networks, CNNs) to the Dark Energ... Read More about Lessons learned from the two largest Galaxy morphological classification catalogues built by convolutional neural networks.

What powers the wind from the black hole accretion disc in GRO J1655-40? (2022)
Journal Article
Tomaru, R., Done, C., & Mao, J. (2022). What powers the wind from the black hole accretion disc in GRO J1655-40?. Monthly Notices of the Royal Astronomical Society, 518(2), 1789-1801. https://doi.org/10.1093/mnras/stac3210

Black hole accretion discs can produce powerful outflowing plasma (disc winds), seen as blue-shifted absorption lines in stellar and supermassive systems. These winds in Quasars have an essential role in controlling galaxy formation across cosmic tim... Read More about What powers the wind from the black hole accretion disc in GRO J1655-40?.

Does absorption against AGN reveal supermassive black hole accretion? (2022)
Journal Article
Rose, T., McNamara, B., Combes, F., Edge, A., Fabian, A., Gaspari, M., Russell, H., Salomé, P., Tremblay, G., & Ferland, G. (2023). Does absorption against AGN reveal supermassive black hole accretion?. Monthly Notices of the Royal Astronomical Society, 518(1), 878 - 892. https://doi.org/10.1093/mnras/stac3194

Galaxies often contain large reservoirs of molecular gas that shape their evolution. This can be through cooling of the gas – which leads to star formation, or accretion on to the central supermassive black hole – which fuels active galactic nucleus... Read More about Does absorption against AGN reveal supermassive black hole accretion?.

The buildup of galaxies and their spheroids: The contributions of mergers, disc instabilities, and star formation (2022)
Journal Article
Huško, F., Lacey, C. G., & Baugh, C. M. (2023). The buildup of galaxies and their spheroids: The contributions of mergers, disc instabilities, and star formation. Monthly Notices of the Royal Astronomical Society, 518(4), 5323-5339. https://doi.org/10.1093/mnras/stac3152

We use the GALFORM semi-analytical model of galaxy formation and the Planck-Millennium simulation to investigate the origins of stellar mass in galaxies and their spheroids. We compare the importance of mergers and disc instabilities, as well as the... Read More about The buildup of galaxies and their spheroids: The contributions of mergers, disc instabilities, and star formation.

Testing the robustness of DYNAMITE triaxial Schwarzschild modelling: The effects of correcting the orbit mirroring (2022)
Journal Article
Thater, S., Jethwa, P., Tahmasebzadeh, B., Zhu, L., den Brok, M., Santucci, G., Ding, Y., Poci, A., Lilley, E., Tim de Zeeuw, P., Zocchi, A., Maindl, T. I., Rigamonti, F., Yang, M., Fahrion, K., & van de Ven, G. (2022). Testing the robustness of DYNAMITE triaxial Schwarzschild modelling: The effects of correcting the orbit mirroring. Astronomy & Astrophysics, 667, Article A51. https://doi.org/10.1051/0004-6361/202243926

In the past 15 yr, the triaxial Schwarzschild orbit-superposition code developed by van den Bosch and van de Ven in Leiden has been widely applied to study the dynamics of galaxies. Recently, a bug was reported in the orbit calculation of this code,... Read More about Testing the robustness of DYNAMITE triaxial Schwarzschild modelling: The effects of correcting the orbit mirroring.

MUSE Analysis of Gas around Galaxies (MAGG) – IV. The gaseous environment of z ∼ 3–4 Ly α emitting galaxies (2022)
Journal Article
Lofthouse, E. K., Fumagalli, M., Fossati, M., Dutta, R., Galbiati, M., Arrigoni Battaia, F., Cantalupo, S., Christensen, L., Cooke, R. J., Longobardi, A., Murphy, M. T., & Prochaska, J. X. (2023). MUSE Analysis of Gas around Galaxies (MAGG) – IV. The gaseous environment of z ∼ 3–4 Ly α emitting galaxies. Monthly Notices of the Royal Astronomical Society, 518(1), 305 - 331. https://doi.org/10.1093/mnras/stac3089

We study the link between galaxies and H I-selected absorption systems at z ∼ 3–4 in the MUSE Analysis of Gas around Galaxies (MAGG) survey, an ESO large programme consisting of integral field spectroscopic observations of 28 quasar fields hosting 61... Read More about MUSE Analysis of Gas around Galaxies (MAGG) – IV. The gaseous environment of z ∼ 3–4 Ly α emitting galaxies.

Gravitational lensing effects of supermassive black holes in cluster environments (2022)
Journal Article
Mahler, G., Natarajan, P., Jauzac, M., & Richard, J. (2023). Gravitational lensing effects of supermassive black holes in cluster environments. Monthly Notices of the Royal Astronomical Society, 518(1), 54-65. https://doi.org/10.1093/mnras/stac3098

This study explores the gravitational lensing effects of supermassive black holes (SMBHs) in galaxy clusters. While the presence of central SMBHs in galaxies is firmly established, recent work from high-resolution simulations predict the existence of... Read More about Gravitational lensing effects of supermassive black holes in cluster environments.