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
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
Adam B. Watts, Barbara Catinella, Luca Cortese, Chris Power, Sara L. Ellison
Summary: Observations of disturbances in the cold neutral atomic hydrogen (HI) in galaxies are common, but the reasons for these disturbances remain unclear. Studies using ALFALFA and xGASS surveys, as well as post-merger galaxies, show that the link between global HI asymmetry and the gas properties of galaxies is complex and needs further exploration.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Anqi Li, Antonino Marasco, Filippo Fraternali, Scott Trager, Marc A. W. Verheijen
Summary: A kinematic study of ionized extraplanar gas in two low-inclination late-type galaxies reveals the presence of ionized gas with specific scale heights and flux fractions, as well as lagging rotation and weak evidence of radial inflow. The results suggest similarities with the kinematics of neutral gas, but further research with a dynamical model is needed to better understand the formation of ionized extraplanar gas.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Jonathan C. Bird, Sarah R. Loebman, David H. Weinberg, Alyson M. Brooks, Thomas R. Quinn, Charlotte R. Christensen
Summary: Kinematic studies of disc galaxies, using individual stars in the Milky Way or statistical studies of global disc kinematics over time, provide insights into how discs form and evolve. The key to success in understanding this process lies in the simulation's dynamically cold multiphase ISM, allowing young stars to form with low velocity dispersion. The evolution of disc galaxies is explained by a model where the decrease in velocity dispersion is due to a decreasing gas fraction over time, resulting in a quasi-stable equilibrium.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Lori E. Porter, Matthew E. Orr, Blakesley Burkhart, Andrew Wetzel, Xiangcheng Ma, Philip F. Hopkins, Andrew Emerick
Summary: We present an analysis of the metallicity relations in five dwarf galaxies and compare them with observations. We find that the simulated galaxies match the observed mass-metallicity and mass-metallicity gradient relations. The metallicities are effectively identical between different phases of the interstellar medium. The scatter in relative metallicity between different gas phases can be attributed to local starburst events or metal-poor inflows.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Aditya Manuwal, Aaron D. Ludlow, Adam R. H. Stevens, Ruby J. Wright, Aaron S. G. Robotham
Summary: We studied the asymmetry of H I emission-line profiles of galaxies in the EAGLE simulation using three different measures. We found that galaxies with symmetric H I line profiles are typically rotationally supported, while those with asymmetric line profiles may or may not be dispersion-dominated. Galaxies with symmetric H I emission lines are more gas rich and show differences in their star formation rates. The asymmetry of the line profiles is strongly correlated with the dynamical state of a galaxy's dark matter halo, and at fixed halo mass, asymmetric centrals tend to have more massive subhaloes and experience higher rates of gas accretion and outflow.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Mojtaba Raouf, Serena Viti, S. Garcia-Burillo, Alexander J. Richings, Joop Schaye, Ashley Bemis, Folkert S. J. Nobels, Matteo Guainazzi, Ko-Yun Huang, Matthieu Schaller, Violette Impellizzeri, Jon Holdship
Summary: We present hydrodynamic simulations of the interstellar medium (ISM) within the circumnuclear disc (CND) of an AGN-dominated galaxy influenced by mechanical feedback from an AGN, using CHIMES non-equilibrium chemistry network. The simulations focus on the central 100 pc scale and include different AGN-feedback models. Post-processing with a radiative-transfer code provides molecular emission lines. Results show that AGN promotes the formation of CO in dense regions surrounding supermassive black holes (SMBHs), and that a model with 5000 km/s wind-velocity and high mass-loading factor best matches NGC 1068 observations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
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
Sarah M. R. Jeffreson, Benjamin W. Keller, Andrew J. Winter, Melanie Chevance, J. M. Diederik Kruijssen, Mark R. Krumholz, Yusuke Fujimoto
Summary: The study reveals that molecular clouds merge at a rate proportional to the time between their centroids, but their physical properties are largely unaffected by these interactions. Below the gas-disc scale height, cloud lifetime scales with cloud size following a power-law relation, while above the disc scale height, this scaling relation flattens to a constant value.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Sarah M. R. Jeffreson, Mark R. Krumholz, Yusuke Fujimoto, Lucia Armillotta, Benjamin W. Keller, Melanie Chevance, J. M. Diederik Kruijssen
Summary: A novel physically motivated sub-grid model for Hii region feedback is presented, which shows that the injection of momentum has a significant impact on the ratio of cold and molecular gas, as well as decreasing the mass-loading of galactic outflows. The simulations indicate that the characteristic lifetime of the least-massive molecular clouds is reduced, while the lifetimes of intermediate-mass clouds are elongated.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Charlotte R. Avery, Stijn Wuyts, Natascha M. Foerster Schreiber, Carolin Villforth, Caroline Bertemes, Stephen L. Hamer, Raman Sharma, Jun Toshikawa, Junkai Zhang
Summary: This paper investigates the neutral gas phase of galactic winds via the Na i D lambda lambda 5890, 5895 angstrom feature within z similar to 0.04 MaNGA galaxies and directly compares their incidence and strength to the ionized winds detected within the same parent sample. The study finds evidence for neutral outflows in 127 galaxies and reveals that both neutral and ionized winds are more often found in systems with elevated star formation rates. The paper also quantifies the scaling relations between the mass outflow rates and the strengths of the physical wind drivers.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Eric W. Koch, Erik W. Rosolowsky, Adam K. Leroy, Jeremy Chastenet, I-Da Chiang, Julianne Dalcanton, Amanda A. Kepley, Karin M. Sandstrom, Andreas Schruba, Sneiana Stanimirovie, Dyas Utomo, Thomas G. Williams
Summary: Previous estimates of galaxy atomic gas mass from 21-cm HI emission are systematically low and require correction due to the presence of a cold opaque atomic gas component. New observations show a preference for a multiple-component Gaussian model over a single opacity-corrected model, challenging previous assumptions. Further studies are needed to better understand the implications of these findings on the opaque atomic ISM mass and HI surface density relationships.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Barbara Catinella, Luca Cortese, Alfred L. Tiley, Steven Janowiecki, Adam B. Watts, Julia J. Bryant, Scott M. Croom, Francesco d'Eugenio, Jesse van de Sande, Joss Bland-Hawthorn, Amelia Fraser-McKelvie, Samuel N. Richards, Sarah M. Sweet, Daniel J. Pisano, Nickolas Pingel, Rebecca A. Koopmann, Dillion Cottrill, Meghan Hill
Summary: We present SAMI-HI, a survey of the atomic hydrogen content of 296 galaxies using integral field spectroscopy data from the SAMI Galaxy Survey. We compare rotational velocities obtained from optical and radio observations to show how systematic differences affect the slope and scatter of the stellar-mass and baryonic Tully-Fisher relations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Charlotte R. Avery, Stijn Wuyts, Natascha M. Foerster Schreiber, Carolin Villforth, Caroline Bertemes, Wenjun Chang, Stephen L. Hamer, Jun Toshikawa, Junkai Zhang
Summary: The study investigates ionized gas outflows in MaNGA galaxies, finding that outflows are centrally concentrated and correlate with factors such as mass, central density, AGN luminosity, and SFR. Strong correlations are observed between outflow rates and mechanical drivers, while the physical properties of outflowing gas show distinct features as well.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Adam B. Watts, Luca Cortese, Barbara Catinella, Chris Power, Amelia Fraser-McKelvie, Julia J. Bryant, Scott M. Croom, Jesse van de Sande, Joss Bland-Hawthorn, Brent Groves
Summary: By using optical integral field spectrograph (IFS) observations, the connection between asymmetry in ionized and neutral gas reservoirs in galaxies is studied to investigate the origin of global H I asymmetry. The majority of asymmetric cases are driven by the distribution of H alpha-emitting gas, and there is no evidence of a relationship between global H alpha and H I asymmetry. The comparison between global H alpha and H I asymmetry is not straightforward, and many global H I asymmetries do not significantly impact the central regions of galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Shin-Jeong Kim, Se-Heon Oh, Jing Wang, Lister Staveley-Smith, Baerbel S. Koribalski, Minsu Kim, Hye-Jin Park, Shinna Kim, Kristine Spekkens, Tobias Westmeier, O. Ivy Wong, Gerhardt R. Meurer, Peter Kamphuis, Barbara Catinella, Kristen B. W. McQuinn, Frank Bigiel, Benne W. Holwerda, Jonghwan Rhee, Karen Lee-Waddell, Nathan Deg, Lourdes Verdes-Montenegro, Bi-Qing For, Juan P. Madrid, Helga Denes, Ahmed Elagali
Summary: We used ASKAP WALLABY pilot survey observations to study the H I gas kinematics of galaxy pairs in two clusters and a group. By comparing the H I properties of galaxy pair candidates with those of non-paired control galaxies, we found that the denser cluster environment likely affects the H I gas properties by decreasing the amplitude of the kinematically narrow H I gas and increasing the Toomre Q values. This effect is more pronounced for galaxy pairs in the cluster environment.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Ian D. Roberts, Toby Brown, Nikki Zabel, Christine D. Wilson, Aeree Chung, Laura C. Parker, Dhruv Bisaria, Alessandro Boselli, Barbara Catinella, Ryan Chown, Luca Cortese, Timothy A. Davis, Sara Ellison, Maria Jesus Jimenez-Donaire, Bumhyun Lee, Rory Smith, Kristine Spekkens, Adam R. H. Stevens, Mallory Thorp, Vincente Villanueva, Adam B. Watts, Charlotte Welker, Hyein Yoon
Summary: We analyze the cold-gas distributions in Virgo cluster galaxies using observations of molecular hydrogen (H-2) and atomic hydrogen (H-i). Our findings show that Virgo galaxies have larger H-i asymmetries compared to non-cluster galaxies, while H-2 asymmetries are only marginally larger. We observe a weak correlation between H-i and H-2 asymmetries over the entire sample, but a stronger correlation for galaxies strongly impacted by environmental perturbations. Additionally, we find excess molecular gas mass on the leading halves of the discs in H-i-tailed Virgo galaxies, accompanied by an excess in the star formation rate.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
R. Rakhi, Geethika Santhosh, Prajwel Joseph, Koshy George, Smitha Subramanian, Indulekha Kavila, J. Postma, Pierre-Alain Duc, Patrick Cote, Luca Cortese, S. K. Ghosh, Annapurni Subramaniam, Shyam Tandon, John Hutchings, P. Samuel Wesley, Aditya Bharadwaj, Neeran Niroula
Summary: NGC 5291 is an early-type galaxy surrounded by a giant H I ring, which is believed to have been formed from collision with another galaxy. This collisional ring contains several star forming complexes and tidal dwarf galaxies, serving as sites of star formation in extreme dynamical environments. Using high spatial resolution FUV and NUV imaging observations, the star formation activity in the NGC 5291 system was studied and quantified, with the estimation of the total star formation rate.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Ajay Dev, Simon P. Driver, Martin Meyer, Sambit Roychowdhury, Jonghwan Rhee, Adam R. H. Stevens, Claudia del P. Lagos, Joss Bland-Hawthorn, Barbara Catinella, A. M. Hopkins, Jonathan Loveday, Danail Obreschkow, Steven Phillipps, Aaron S. G. Robotham
Summary: In this study, we determine the relation between atomic hydrogen (HI) and halo mass using data from the Arecibo Legacy Fast ALFA survey at the location of optically selected groups from the Galaxy And Mass Assembly (GAMA) survey. We find that the HI mass of the groups generally increases with halo mass, ranging from 1.3% at 10^11.6 solar masses to 0.4% at 10^13.7 solar masses. Our results are consistent with previous studies and mock observations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
T. N. Reynolds, B. Catinella, L. Cortese, N. Deg, H. Denes, A. Elagali, B. -Q. For, P. Kamphuis, D. Kleiner, B. S. Koribalski, K. Lee-Waddell, C. Murugeshan, W. Raja, J. Rhee, K. Spekkens, L. Staveley-Smith, J. M. van der Hulst, J. Wang, T. Westmeier, O. I. Wong, F. Bigiel, A. Bosma, B. W. Holwerda, D. A. Leahy, M. J. Meyer
Summary: We investigated the diversity in sizes and surface densities of neutral atomic hydrogen (H I) gas discs in nearly 280 nearby galaxies detected by WALLABY. By combining H I data with photometry, we examined the relationship between stellar structure, star formation, and H I structural parameters. Our results showed that galaxies with higher stellar masses and surface densities tend to have less extended H I discs and lower H I surface densities. Moreover, higher H I surface densities and more extended H I discs were found to be associated with more star formation.
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
(2023)
Article
Astronomy & Astrophysics
Toby Brown, Ian D. Roberts, Mallory Thorp, Sara L. Ellison, Nikki Zabel, Christine D. Wilson, Yannick M. Bahe, Dhruv Bisaria, Alberto D. Bolatto, Alessandro Boselli, Aeree Chung, Luca Cortese, Barbara Catinella, Timothy A. Davis, Maria J. Jimenez-Donaire, Claudia D. P. Lagos, Bumhyun Lee, Laura C. Parker, Rory Smith, Kristine Spekkens, Adam R. H. Stevens, Vicente Villanueva, Adam B. Watts
Summary: This study investigates how the environment regulates the star formation cycle of satellite galaxies in the Virgo Cluster. The results show that environmental mechanisms, such as ram pressure stripping and starvation, play a significant role in quenching star formation in H i-poor galaxies.
ASTROPHYSICAL JOURNAL
(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
Fabio Rigamonti, Massimo Dotti, Stefano Covino, Francesco Haardt, Luca Cortese, Marco Landoni, Ludovica Varisco
Summary: From a purely photometric perspective, galaxies are usually decomposed into a bulge+disc system, but recent observations have shown that this oversimplifies the complexity, especially when considering galaxy kinematics. To address this issue, a novel approach called bang was introduced, which uses analytical potential-density pairs as galactic components for a computationally fast and reliable fit of the morphological and kinematic properties of galaxies. By applying bang to the SDSS-MaNGA survey, key parameters such as mass, radial extensions, and dynamics were estimated for bulges and discs of over 10,000 objects.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Annagrazia Puglisi, Ugne Dudzeviciute, Mark Swinbank, Steven Gillman, Alfred L. Tiley, Richard G. Bower, Michele Cirasuolo, Luca Cortese, Karl Glazebrook, Chris Harrison, Edo Ibar, Juan Molina, Danail Obreschkow, Kyle A. Oman, Matthieu Schaller, Francesco Shankar, Ray M. Sharples
Summary: We present the first results from the KMOS Ultra-deep Rotation Velocity Survey (KURVS), which examines the outer rotation curves and dark matter content of 22 star-forming galaxies at z similar to 1.5. Using Hα emission, we analyze individual rotation curves to a radius of 4 times the effective radius, finding that most curves are flat or rising between three and six disc scale radii. Our measurements suggest a declining dark matter fraction with increasing stellar mass and stellar mass surface density. The tension with high stellar mass surface density observations indicates a need to reassess baryonic processes in the most massive galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
N. Deg, R. Palleske, K. Spekkens, J. Wang, T. Jarrett, J. English, X. Lin, J. Yeung, J. R. Mould, B. Catinella, H. Denes, A. Elagali, B. -Q For, P. Kamphuis, B. S. Koribalski, K. Lee-Waddell, C. Murugeshan, S. Oh, J. Rhee, P. Serra, T. Westmeier, O. Wong, K. Bekki, A. Bosma, C. Carignan, B. W. Holwerda, N. Yu
Summary: This article reports the discovery of two potential polar ring galaxies (PRGs) in the WALLABY Pilot Data Release 1 (PDR1) and analyzes and models them using virtual reality software. The results suggest that these galaxies may be PRGs and that the WALLABY survey has the potential to detect more new PRGs.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Pablo Corcho-Caballero, Yago Ascasibar, Luca Cortese, Sebastian F. Sanchez, Angel R. Lopez-Sanchez, Amelia Fraser-McKelvie, Tayyaba Zafar
Summary: The relationship between the mechanisms that cause the rapid quenching of star-forming systems and the properties of the overall galaxy population are still difficult to determine. In this study, we investigate the physical properties of galaxies in the MaNGA and SAMI surveys at different stages of their star formation history. By comparing galaxies with recent quenching signatures to the rest of the low star-forming and active population, we find that recently quenched galaxies are compact and low-mass satellite systems with higher metallicities than their long-lived counterparts. This study emphasizes the importance of distinguishing between old and recently quenched galaxies in order to understand the mechanisms driving galaxy evolution.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Francesco D'Eugenio, Arjen van der Wel, Joanna M. Piotrowska, Rachel Bezanson, Edward N. Taylor, Jesse van de Sande, William M. Baker, Eric F. Bell, Sabine Bellstedt, Joss Bland-Hawthorn, Asa F. L. Bluck, Sarah Brough, Julia J. Bryant, Matthew Colless, Luca Cortese, Scott M. Croom, Caro Derkenne, Pieter van Dokkum, Deanne Fisher, Caroline Foster, Anna Gallazzi, Anna de Graaff, Brent Groves, Josha van Houdt, Claudia del P. Lagos, Tobias J. Looser, Roberto Maiolino, Michael Maseda, J. Trevor Mendel, Angelos Nersesian, Camilla Pacifici, Adriano Poci, Rhea-Silvia Remus, Sarah M. Sweet, Sabine Thater, Kim-Vy Tran, Hannah Ubler, Lucas M. Valenzuela, Emily Wisnioski, Stefano Zibetti
Summary: This study presents the first investigation of spatially integrated higher-order stellar kinematics over cosmic time. It reveals that massive galaxies continue to accrete mass and increase their dispersion support after becoming quiescent.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Adam B. Watts, Luca Cortese, Barbara Catinella, Toby Brown, Christine D. Wilson, Nikki Zabel, Ian D. Roberts, Timothy A. Davis, Mallory Thorp, Aeree Chung, Adam R. H. Stevens, Sara L. Ellison, Kristine Spekkens, Laura C. Parker, Yannick M. Bahe, Vicente Villanueva, Maria Jimenez-Donaire, Dhruv Bisaria, Alessandro Boselli, Alberto D. Bolatto, Bumhyun Lee
Summary: The quenching of cluster satellite galaxies is closely related to the suppression of their cold interstellar medium (ISM) by environmental mechanisms. While the removal of neutral atomic hydrogen (H I) at large radii is well studied, how the environment impacts the remaining gas in the centres of galaxies, which are dominated by molecular gas, is less clear.
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
(2023)