Article
Astronomy & Astrophysics
C. Bertemes, D. Wylezalek, M. Alban, M. Aravena, W. M. Baker, S. Cazzoli, C. Cicone, S. Martin, A. Schimek, J. Wagg, W. Wang
Summary: This study presents the first public data release of the MASCOT survey, which focuses on galaxies below the star-forming main sequence. The results show an empirical relation between gas-phase metallicity gradients and global molecular gas depletion times. The study investigates potential drivers of this relation and finds a strong connection to centralized outflow strength and suppressed star formation in the outskirts of AGN-like galaxies. Overall, the observed relation is suggested to be the result of metal redistribution via weak feedback and a connection to in situ star formation.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Caro Derkenne, Richard M. McDermid, Adriano Poci, J. Trevor Mendel, Francesco D'Eugenio, Seyoung Jeon, Rhea-Silvia Remus, Sabine Bellstedt, Andrew J. Battisti, Joss Bland-Hawthorn, Anna Ferre-Mateu, Caroline Foster, K. E. Harborne, Claudia D. P. Lagos, Yingjie Peng, Piyush Sharda, Gauri Sharma, Sarah Sweet, Kim-Vy H. Tran, Lucas M. Valenzuela, Sam Vaughan, Emily Wisnioski, Sukyoung K. Yi
Summary: We investigate the impact of environment on the internal mass distribution of galaxies using the MAGPI survey. We find that galaxies in high density clusters have less centrally concentrated mass distribution compared to galaxies in low-to-mid density environments. Our results suggest that environment plays a role in the internal mass distribution of galaxies, with no evolution of the slope in the last 3-4 Gyr.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Yuren Zhou, Yanmei Chen, Yong Shi, Dmitry Bizyaev, Hong Guo, Min Bao, Haitong Xu, Xiaoling Yu, Joel R. Brownstein
Summary: In this study, we select 456 gas-star kinematically misaligned galaxies and analyze their properties in detail. We find that misaligned galaxies generally have lower gas detection rates and molecular gas mass fractions, as well as smaller sizes and higher Sersic indices. For misaligned galaxies in star-forming states, they tend to show more asymmetric gas velocity fields. As for misaligned quiescent galaxies, there are possibly three origins.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Haitong Xu, Yanmei Chen, Yong Shi, Yuren Zhou, Dmitry Bizyaev, Min Bao, Minje Beom, Jose G. Fernandez-Trincado, Xiao Cao
Summary: We investigated galaxies with kinematically misaligned gas and stellar components, and classified them into star-forming, green-valley, and quiescent galaxies. Our results show significant differences between misaligned galaxies and control samples in terms of gas and stellar motion ratios, central star formation activity, and gas-phase metallicity. These findings suggest that external gas accretion plays an important role in the evolution of galaxies, affecting both their dynamics and stellar populations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Caro Derkenne, Richard M. McDermid, Adriano Poci, Rhea-Silvia Remus, Inger Jorgensen, Eric Emsellem
Summary: The change in the mass density slope of early-type galaxies over cosmic time can be used to study their evolutionary pathways. Hydrodynamical cosmological simulations suggest that density profiles were steep at high redshifts but became more isothermal as redshift approached zero due to gas-poor mergers. However, gravitational lensing results show a different trend, indicating a potential discrepancy between observations and simulations in understanding the evolutionary mechanisms for early-type galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Jennifer A. Hardwick, Luca Cortese, Danail Obreschkow, Barbara Catinella
Summary: We use a sample of 559 disc galaxies to study the connection between baryonic angular momentum, mass, and atomic gas fraction. We confirm the correlation between specific angular momentum and atomic gas fraction, but find a larger scatter than previously observed. The analytical stability model provides a good approximation but does not fully match our data.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
S. M. Croom, D. S. Taranu, J. van de Sande, C. D. P. Lagos, K. E. Harborne, J. Bland-Hawthorn, S. Brough, J. J. Bryant, L. Cortese, C. Foster, M. Goodwin, B. Groves, A. Khalid, J. Lawrence, A. M. Medling, S. N. Richards, M. S. Owers, N. Scott, S. P. Vaughan
Summary: Comparisons between galaxy survey and models are used to study the importance of disc fading in the transition of spirals into lenticular galaxies. The results suggest that while disc fading has a noticeable impact on spin and concentration, it cannot explain all observed differences, indicating that intrinsic dynamical evolution is important. Progenitor bias also plays a role in moving data further from the disc fading model scenario.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Yifan Mai, Sam P. Vaughan, Scott M. Croom, Jesse van de Sande, Stefania Barsanti, Joss Bland-Hawthorn, Sarah Brough, Julia J. Bryant, Matthew Colless, Michael Goodwin, Brent Groves, Iraklis S. Konstantopoulos, Jon S. Lawrence, Nuria P. F. Lorente, Samuel N. Richards
Summary: Using data from the SAMI Galaxy Survey, the study explores the correlation between the rotation of SAMI galaxies and the motion of neighboring galaxies. The results show that there is a significant coherence signal within 1 Mpc, which increases with distance up to 2 Mpc but becomes consistent with zero or negative beyond 3 Mpc. The study suggests that the coherence signals within 2 Mpc might be influenced by the variance of large-scale structure.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Jennifer A. Hardwick, Luca Cortese, Danail Obreschkow, Barbara Catinella, Robin H. W. Cook
Summary: We present a detailed study of the stellar mass versus specific angular momentum relation for a sample of 564 nearby galaxies. Our results show that the slope and scatter of the Fall relation vary when considering galaxy type and sample selection. The gas fraction is the most correlated parameter for low stellar masses, while the bulge-to-total ratio becomes more dominant at higher masses. Interestingly, when only the disc components of galaxies are considered, the gas fraction remains the most correlated parameter with the scatter of the relation.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Anna de Graaff, Marijn Franx, Eric F. Bell, Rachel Bezanson, Matthieu Schaller, Joop Schaye, Arjen van der Wel
Summary: Using the EAGLE cosmological simulations, we analyze the z=0.1 fundamental plane (FP), which describes the relation between galaxy size, mass, and velocity dispersion. We find that simulated galaxies follow a total mass FP that is close to the virial relation, indicating weak non-homology effects. However, when using stellar mass, there is a strong deviation from the virial plane due to variations in dark matter content. The stellar mass FP can be used as a simple test for cosmological simulations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Jian Wu, Curtis Struck, Bruce G. Elmegreen, Elena D'Onghia
Summary: This study investigates the formation of exponential profiles in galaxy discs through stellar scattering by massive clumps. The authors find that star-clump encounters, particularly those with closest approaches less than 0.5 kpc, can lead to significant changes in the angular momentum of stars. These encounters also increase the random motion of stars, resulting in an increase in the average radial and vertical actions of the stellar population. The direction from which a star approaches a clump influences changes in angular momentum and radial action. Stars initially at higher galactic radii tend to lose angular momentum during encounters, while those at lower radii tend to gain angular momentum. The study also suggests that regardless of the direction of the bias, stellar profile evolution towards an exponential shape seems to occur.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
M. Bianchin, R. A. Riffel, T. Storchi-Bergmann, R. Riffel, D. Ruschel-Dutra, C. M. Harrison, L. G. Dahmer-Hahn, V Mainieri, A. J. Schonell, N. Z. Dametto
Summary: The study investigated the gas distribution and kinematics of the inner kpc of six moderately luminous Seyfert galaxies. Rotation was found to be the dominant kinematic component in the galaxies, with ionized gas outflows observed in four galaxies and H-2 outflows in three galaxies. Inflows were also detected in three galaxies, with hot molecular gas inflow rates lower than current accretion rates to the AGN. Ionized outflows were found to disturb the gas in the inner kpc.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Felipe S. Lohmann, Allan Schnorr-Mueller, Marina Trevisan, T. Ricci, K. Slodkowski Clerici
Summary: We investigate the formation and evolution of massive compact galaxies (MCGs) at z = 0 using the IllustrisTNG cosmological simulation. Our results show that MCGs have similar properties to observed galaxies, including old ages, supersolar metallicities, and alpha-enhanced abundances. We find that MCGs generally assemble their mass early and accrete low angular momentum gas, leading to enhanced supermassive black hole growth and early quenching. Comparisons with non-compact galaxies reveal differences in accretion histories and highlight the role of dry mergers and progenitor bias in shaping the kinematics and stellar populations of these galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Jian Wu, Curtis Struck, Bruce G. Elmegreen, Elena D'Onghia
Summary: Previous models have shown that a time-independent surface density distribution that follows an exponential divided by radius can be generated in a two-dimensional galaxy disc through stochastic scattering of stars with a constant inward scattering bias. In this study, we demonstrate that similar profiles can also arise from an outward scattering bias, even though the disc surface density decreases slowly over time due to a net stellar outflow. The trend towards a near-exponential surface profile remains robust, even when the scattering intensity has moderate radial and time dependences, as long as certain limitations on the scattering rates are met.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
J. A. Sellwood, R. G. Carlberg
Summary: This paper continues to explore different aspects of disc galaxy simulations that support spiral instabilities. The study finds a correlation between the growth rate of the mode and its limiting amplitude, and identifies the role of non-linear orbit deflections and available time in the saturation and decay of the spiral instabilities.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Melanie Habouzit, Masafusa Onoue, Eduardo Banados, Marcel Neeleman, Daniel Angles-Alcazar, Fabian Walter, Annalisa Pillepich, Romeel Dave, Knud Jahnke, Yohan Dubois
Summary: This paper discusses the capability of the James Webb Space Telescope to study high-redshift quasars at z>=6 and understand the formation process of more normal black holes at z=6 by measuring the black hole mass and Eddington ratio of fainter quasars. The study finds inconsistencies among different cosmological simulations regarding the mass offsets of black holes at z>=4 with respect to the M BH M M-star scaling relation at z = 0. The results highlight the importance of studying faint quasars with JWST and improving cosmological simulations for a better understanding of high-redshift black holes.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
G. Bonnet, E. Nezri, K. Kraljic, C. Schimd
Summary: The morphology of haloes provides valuable information for understanding cosmological and galaxy formation models. Minkowski Functionals (MFs) are used to characterize the actual morphology of haloes, which go beyond traditional spherical or ellipsoidal symmetries and can capture the internal structures and external shape parameters of haloes more accurately.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
J. Reddish, K. Kraljic, M. S. Petersen, K. Tep, Y. Dubois, C. Pichon, S. Peirani, F. Bournaud, H. Choi, J. Devriendt, R. Jackson, G. Martin, M. J. Park, M. Volonteri, S. K. Yi
Summary: We used the NEWHORIZON simulation to study the redshift evolution of bar properties and fractions within galaxies. The simulation reveals a missing bars problem in cosmological simulations, with a low bar fraction in Milky Way-like progenitors. The analysis suggests that low mass galaxies are dominated by dark matter and have difficulty forming bars, while more massive galaxies have large bulges preventing bar persistence at low redshift. This investigation confirms that the bar fraction evolution provides stringent constraints on the assembly history of baryons and dark matter onto galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
E. Sarpa, A. Longobardi, K. Kraljic, A. Veropalumbo, C. Schimd
Summary: This study presents a novel application of the extended Fast Action Minimization method (eFAM) to assess the role of the environment in galaxy evolution. The results show that the eFAM model agrees well with the Magneticum hydrodynamical simulation in terms of the fraction of volume occupied by different cosmic structures and the accuracy of eFAM structures. The study also demonstrates the capability of eFAM to trace the environmental history of galaxies and relate it to observable properties, providing a complementary approach to studying galaxy properties based on light-cone observations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
K. Kraljic, C. Laigle, C. Pichon, S. Peirani, S. Codis, J. Shim, C. Cadiou, D. Pogosyan, S. Arnouts, M. Pieri, V Irsic, S. S. Morrison, J. Onorbe, I Perez-Rafols, G. Dalton
Summary: The upcoming WEAVE-QSO survey aims to reconstruct the 3D density field by targeting a high density of quasars over a large area through Lyman-alpha tomography. The fidelity of the reconstruction is assessed through measuring critical points in the cosmic web, and potential applications for dark energy studies are highlighted.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Lachlan Lancaster, Sarah Pearson, Benjamin F. Williams, Kathryn Johnston, Tjitske K. Starkenburg, Erin Kado-Fong, Anil C. Seth, Eric F. Bell
Summary: Studies of resolved stellar populations in the Milky Way and nearby galaxies provide detailed insights into galaxy evolution. The ability to probe stellar populations of different galaxies allows for exploration of key questions and statistical studies. A simple formalism and code are developed to predict the density of resolved stars and optimize observations for future surveys.
ASTRONOMICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
B. B. Thompson, R. Smith, K. Kraljic
Summary: We use hydrodynamical cosmological zoom simulations to study gas accretion by haloes in 14 voids at z = 0. We find that about one-tenth of the haloes are unable to accrete external gas due to fast flows passing by them. These haloes are usually located near void walls and have recently crossed the wall, moving away from it. The fast flows result in challenges for gas accretion and can cause partial gas loss by ram pressures.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Woorak Choi, Lijie Liu, Martin Bureau, Michele Cappellari, Timothy A. Davis, Jindra Gensior, Fu-Heng Liang, Anan Lu, Thomas G. Williams, Aeree Chung
Summary: We present high-resolution ALMA observations of the central region of the nearby barred spiral galaxy NGC 5806. The molecular gas distribution in NGC 5806 exhibits a highly structured pattern with a clear nucleus, nuclear ring, and offset dust lanes. We identify 170 giant molecular clouds (GMCs) with comparable sizes but larger gas masses and observed linewidths than those in the Milky Way disc. The properties of these clouds suggest bar-driven gas shocks and inflows along the offset dust lanes.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Helena Faustino Vieira, Ana Duarte-Cabral, Timothy A. Davis, Nicolas Peretto, Matthew W. L. Smith, Miguel Querejeta, Dario Colombo, Michael Anderson
Summary: We have developed a new technique to map gas surface density in nearby galaxies at the parsec-scale by measuring dust attenuation in optical bands. The technique uses dust emission observations to calibrate the contribution of foreground light and assumes a layer of dust close to the mid-plane of face-on galaxies. Applying this technique to M51, we obtained a high-resolution dust and gas surface density map that is consistent with previous studies. This technique provides unprecedented spatial information for studying large-scale dynamics and stellar feedback mechanisms in the interstellar medium at parsec-scales.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Ilaria Ruffa, Timothy A. Davis, Michele Cappellari, Martin Bureau, Jacob Elford, Satoru Iguchi, Federico Lelli, Fu-Heng Liang, Lijie Liu, Anan Lu, Marc Sarzi, Thomas G. Williams
Summary: We present a CO dynamical estimate of the mass of the supermassive black hole (SMBH) in three nearby early-type galaxies. The study shows the presence of massive dark objects at the center of NGC 1574 and NGC 4261, while only an upper limit can be obtained for NGC 0612. The results are consistent with predictions from the M-BH - sigma(*) relation.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Marie Korsaga, Benoit Famaey, Jonathan Freundlich, Lorenzo Posti, Rodrigo Ibata, Christian Boily, Katarina Kraljic, D. Esparza-Arredondo, C. Ramos Almeida, Jean Koulidiati
Summary: The scaling relation between neutral hydrogen (H i) and dark matter mass in isolated disk galaxies at low redshift was studied. It was found that the H i-to-dark halo mass ratio decreases with stellar mass for the most massive disk galaxies. Observed galaxies with regularly rotating extended H i disks were surprisingly self-similar up to high masses, indicating the presence of mass-independent self-regulation mechanisms.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Adam R. H. Stevens, Toby Brown, Benedikt Diemer, Annalisa Pillepich, Lars Hernquist, Dylan Nelson, Yannick M. Bahe, Alessandro Boselli, Timothy A. Davis, Pascal J. Elahi, Sara L. Ellison, Maria J. Jimenez-Donaire, Ian D. Roberts, Kristine Spekkens, Vicente Villanueva, Adam B. Watts, Christine D. Wilson, Nikki Zabel
Summary: This study examines the resolved effects of a Virgo-like cluster environment on the gas surface densities of galaxies using the TNG50 simulation. Although not quantitatively matching the observations, the simulation qualitatively reproduces the observed trends of gas truncation and central density suppression. This result suggests that cosmological hydrodynamic simulations can reliably model the post-infall histories of cluster satellite galaxies.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Jindra Gensior, Timothy A. Davis, Martin Bureau, J. M. Diederik Kruijssen, Michele Cappellari, Ilaria Ruffa, Thomas G. Williams
Summary: Observations show that the central gas discs in early-type galaxies are smoother than those in late-type galaxies. Simulations suggest that the suppression of fragmentation in spheroid-dominated galaxies is due to the shear-induced turbulence. Power spectrum slope analysis indicates that high shear can lead to incompressible turbulence.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Respiratory System
Christopher Duckworth, Michael J. Boniface, Adam Kirk, Thomas M. A. Wilkinson
Summary: The GOLD 2023 guidelines proposed important changes to the stratification of disease severity for chronic obstructive pulmonary disease (COPD). This study quantifies the differential disease progression of individuals initially stratified by the GOLD 2022 ABCD scheme and evaluates the proposed changes. The results show that CAT scores remain important for stratifying disease progression in terms of symptomology and future exacerbation risk.
INTERNATIONAL JOURNAL OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE
(2023)
Proceedings Paper
Computer Science, Information Systems
Amid Ayobi, Jacob Hughes, Christopher J. Duckworth, Jakub J. Dylag, Sam James, Paul Marshall, Matthew Guy, Anitha Kumaran, Adriane Chapman, Michael Boniface, Aisling Ann O'Kane
Summary: Engaging end user groups with computational notebooks can effectively align predictive system design with user needs. The co-design study demonstrates the value of interactive data visualizations in supporting multidisciplinary learning, anticipating model benefits and harms, and highlighting specific care needs.
PROCEEDINGS OF THE 2023 CHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS (CHI 2023)
(2023)