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
A. Audibert, F. Combes, S. Garcia-Burillo, L. Hunt, A. Eckart, S. Aalto, V Casasola, F. Boone, M. Krips, S. Viti, S. Muller, K. Dasyra, P. van der Werf, S. Martin
Summary: ALMA observations of NGC1808 reveal a nuclear spiral and a circumnuclear disk, with detections of dense gas line tracers like HCN, HCO+, and CS. Presence of an active galactic nucleus is indicated at the nucleus, with regular rotation observed within a radius of 400 pc, except for non-circular motions in the nuclear spiral arms. Potential weak outflow attributed to AGN feedback is observed along with a molecular outflow likely due to supernovae feedback at >= 250 pc in the NE direction, connected to a kpc-scale superwind.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Jindra Gensior, J. M. Diederik Kruijssen
Summary: In certain conditions, galactic dynamics can suppress star formation and play a significant role in galaxy evolution. The study suggests that dynamical suppression is more effective at low gas fractions and may have an impact in the low redshift and high galaxy mass range.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Simon Deeley, Michael J. Drinkwater, Sarah M. Sweet, Kenji Bekki, Warrick J. Couch, Duncan A. Forbes
Summary: By combining observational and simulation data, it has been found that compact elliptical galaxies have two main formation pathways: stripping from a larger host galaxy and gradual buildup of stellar mass in isolated environments. The proportions are 32% and 68% respectively. The observed differences between isolated and host-associated compact elliptical galaxies can be fully explained by the dominance of different formation pathways in each environment.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Simon Deeley, Michael J. Drinkwater, Sarah M. Sweet, Kenji Bekki, Warrick J. Couch, Duncan A. Forbes, Arianna Dolfi
Summary: The formation of S0 galaxies is complex, with two main pathways identified: gas stripping via group infalls and significant merger events. S0 galaxies formed through mergers feature a transient star-forming ring that matches observations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Mark D. Smith, Martin Bureau, Timothy A. Davis, Michele Cappellari, Lijie Liu, Kyoko Onishi, Satoru Iguchi, Eve North, Marc Sarzi, Thomas G. Williams
Summary: Using observations from the Atacama Large Millimeter/submillimeter Array, researchers were able to determine the mass of the SMBH and the stellar mass-to-light ratio in the elliptical galaxy NGC 7052. The results showed that the SMBH mass was significantly larger than previously estimated using ionized gas kinematics, and a central molecular gas deficit was likely due to tidal disruption.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Hyunjin Jeong, Kyuseok Oh, Seok-Joo Joo, Sukyoung K. Yi
Summary: Based on GALEX UV data and SUSS data, a study characterized the stellar population properties of luminous early-type galaxies, finding that 7.7% of the sample galaxies exhibit recent star formation and tend to be more metal-poor, possibly due to external processes such as mergers or interactions driving the observed star formation activity.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Anqi Li, Filippo Fraternali, Antonino Marasco, Scott C. Trager, Gabriele Pezzulli, Pavel E. Mancera Pina, Marc A. W. Verheijen
Summary: We used a dynamical model of galactic fountain to study the extraplanar gas in NGC 2403. The model suggests a total EPG mass of 4.7 x 10(8) M-? with a typical scale height of 1 kpc and a vertical gradient of the rotation velocity of -10.0 km s(-1) kpc(-1). The accretion rate from the condensation of the inner hot CGM inferred by the model is approximately equal to the star-formation rate in this galaxy.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Lodovico Coccato, Amelia Fraser-McKelvie, Yara L. Jaffe, Evelyn J. Johnston, Arianna Cortesi, Diego Pallero
Summary: This study aims to understand the role of the environment in the formation of lenticular galaxies. By combining the study of kinematics, morphology, and properties of stellar populations, it is found that the "faded spiral" pathway is the most efficient channel to produce lenticular galaxies, and its efficiency increases with the mass of the group or cluster. The "merger" pathway is also viable, and its efficiency is higher with decreasing local density or environment mass.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Xue Ge, Qiu-Sheng Gu, Ruben Garcia-Benito, Shi-Ying Lu, Cheng-Long Lei, Nan Ding
Summary: This study presents observations of four dwarf lenticular galaxies with multiple star formation regions, showing that these galaxies exhibit significant rotation and follow the Kennicutt-Schmidt law in their star formation processes. The gas-phase metallicities in star-forming regions of these galaxies are lower, indicating that extended star formation may be related to abundant atomic hydrogen, a long dynamic time-scale, and a low-density environment.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Suraj Dhiwar, Kanak Saha, Avishai Dekel, Abhishek Paswan, Divya Pandey, Arianna Cortesi, Mahadev Pandge
Summary: We studied the evolution of L-* elliptical galaxies in terms of their star formation history and environment in the colour-magnitude diagram to understand their quenching process. We selected 1109 L-* galaxies from a sample of 36,500 galaxies based on visual extraction and spectroscopic selection. Among them, 51 elliptical galaxies were selected based on their surface-brightness profile. Most of the red-sequence and green-valley L-* elliptical galaxies have either recently been quenched or are still forming stars, while the blue-cloud L-* elliptical galaxies are showing vigorous star formation. The galaxy colour is correlated with the cosmic-web environment.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
E. Perez-Hernandez, S. N. Kemp, V. H. Ramirez-Siordia, A. Nigoche-Netro
Summary: This study presents a comprehensive investigation of deep optical long-slit spectroscopy and deep broad-band photometry of NGC 6086. The results reveal the presence of two separate structures in NGC 6086 and the existence of an envelope. Additionally, the study finds radial discontinuity in the distribution of galaxies in the cluster A2162, indicating the need for further investigation of the cluster's kinematics.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Evelyn J. Johnston, Boris Haussler, Keerthana Jegatheesan, Amelia Fraser-McKelvie, Lodovico Coccato, Arianna Cortesi, Yara Jaffe, Gaspar Galaz, Marcelo Mora, Yasna Ordenes-Briceno
Summary: This study used BUDDI to extract the spectra of the bulges and discs of 78 S0 galaxies and compared their stellar populations. The results show that bulges are generally older and more metal rich than discs. The stellar mass of a galaxy plays a more significant role in the formation of bulges. More massive S0 galaxies form through an inside-out scenario, while lower mass ones may form through an outside-in scenario or together with the discs.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
D. Bizyaev, Yan-Mei Chen, Yong Shi, Namrata Roy, Rogerio Riffel, Rogemar A. Riffel, Jose G. Fernandez-Trincado
Summary: We found 132 galaxies in the SDSS MaNGA survey that show central star formation driven biconical gas outflows. These galaxies have a high concentration of star formation and a younger central stellar population compared to their periphery. We also observed that these galaxies exhibited more tidal-enhanced features compared to a control sample.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Eric P. Andersson, Florent Renaud, Oscar Agertz
Summary: The study suggests that runaway stars might contribute to the phenomenon of star formation in the outskirts of spiral galaxies, enabling the appearance of star formation in regions with extremely low gas surface densities.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
R. Drimmel, M. Romero-Gomez, L. Chemin, P. Ramos, E. Poggio, V. Ripepi, R. Andrae, R. Blomme, T. Cantat-Gaudin, A. Castro-Ginard, G. Clementini, F. Figueras, M. Fouesneau, Y. Fremat, K. Jardine, S. Khanna, A. Lobel, D. J. Marshall, T. Muraveva, A. G. A. Brown, A. Vallenari, T. Prusti, J. H. J. de Bruijne, F. Arenou, C. Babusiaux, M. Biermann, O. L. Creevey, C. Ducourant, D. W. Evans, L. Eyer, R. Guerra, A. Hutton, C. Jordi, S. A. Klioner, U. L. Lammers, L. Lindegren, X. Luri, F. Mignard, C. Panem, D. Pourbaix, S. Randich, P. Sartoretti, C. Soubiran, P. Tanga, N. A. Walton, C. A. L. Bailer-Jones, U. Bastian, F. Jansen, D. Katz, M. G. Lattanzi, F. van Leeuwen, J. Bakker, C. Cacciari, J. Castaneda, F. De Angeli, C. Fabricius, L. Galluccio, A. Guerrier, U. Heiter, E. Masana, R. Messineo, N. Mowlavi, C. Nicolas, K. Nienartowicz, F. Pailler, P. Panuzzo, F. Riclet, W. Roux, G. M. Seabroke, R. Sordo, F. Thevenin, G. Gracia-Abril, J. Portell, D. Teyssier, M. Altmann, M. Audard, I. Bellas-Velidis, K. Benson, J. Berthier, P. W. Burgess, D. Busonero, G. Busso, H. Canovas, B. Carry, A. Cellino, N. Cheek, Y. Damerdji, M. Davidson, P. de Teodoro, M. Nunez Campos, L. Delchambre, A. Dell'Oro, P. Esquej, J. Fernandez-Hernandez, E. Fraile, D. Garabato, P. Garcia-Lario, E. Gosset, R. Haigron, J. -L. Halbwachs, N. C. Hambly, D. L. Harrison, J. Hernandez, D. Hestroffer, S. T. Hodgkin, B. Holl, K. Janssen, G. Jevardat de Fombelle, S. Jordan, A. Krone-Martins, A. C. Lanzafame, W. Loeffler, O. Marchal, P. M. Marrese, A. Moitinho, K. Muinonen, P. Osborne, E. Pancino, T. Pauwels, A. Recio-Blanco, C. Reyle, M. Riello, L. Rimoldini, T. Roegiers, J. Rybizki, L. M. Sarro, C. Siopis, M. Smith, A. Sozzetti, E. Utrilla, M. van Leeuwen, U. Abbas, P. Abraham, A. Abreu Aramburu, C. Aerts, J. J. Aguado, M. Ajaj, F. Aldea-Montero, G. Altavilla, M. A. Alvarez, J. Alves, F. Anders, R. I. Anderson, E. Anglada Varela, T. Antoja, D. Baines, S. G. Baker, L. Balaguer-Nunez, E. Balbinot, Z. Balog, C. Barache, D. Barbato, M. Barros, M. A. Barstow, S. Bartolome, J. -L. Bassilana, N. Bauchet, U. Becciani, M. Bellazzini, A. Berihuete, M. Bernet, S. Bertone, L. Bianchi, A. Binnenfeld, S. Blanco-Cuaresma, T. Boch, A. Bombrun, D. Bossini, S. Bouquillon, A. Bragaglia, L. Bramante, E. Breedt, A. Bressan, N. Brouillet, E. Brugaletta, B. Bucciarelli, A. Burlacu, A. G. Butkevich, R. Buzzi, E. Caffau, R. Cancelliere, R. Carballo, T. Carlucci, M. I. Carnerero, J. M. Carrasco, L. Casamiquela, M. Castellani, L. Chaoul, P. Charlot, V. Chiaramida, A. Chiavassa, N. Chornay, G. Comoretto, G. Contursi, W. J. Cooper, T. Cornez, S. Cowell, F. Crifo, M. Cropper, M. Crosta, C. Crowley, C. Dafonte, A. Dapergolas, P. David, P. de Laverny, F. De Luise, R. De March, J. De Ridder, R. de Souza, A. de Torres, E. F. del Peloso, E. del Pozo, M. Delbo, A. Delgado, J. -B. Delisle, C. Demouchy, T. E. Dharmawardena, P. Di Matteo, S. Diakite, C. Diener, E. Distefano, C. Dolding, H. Enke, C. Fabre, M. Fabrizio, S. Faigler, G. Fedorets, P. Fernique, Y. Fournier, C. Fouron, F. Fragkoudi, M. Gai, A. Garcia-Gutierrez, M. Garcia-Reinaldos, M. Garcia-Torres, A. Garofalo, A. Gavel, P. Gavras, E. Gerlach, R. Geyer, P. Giacobbe, G. Gilmore, S. Girona, G. Giuffrida, R. Gomel, A. Gomez, J. Gonzalez-Nunez, I. Gonzalez-Santamaria, J. J. Gonzalez-Vidal, M. Granvik, P. Guillout, J. Guiraud, R. Gutierrez-Sanchez, L. P. Guy, D. Hatzidimitriou, M. Hauser, M. Haywood, A. Helmer, A. Helmi, M. H. Sarmiento, S. L. Hidalgo, N. Hladczuk, D. Hobbs, G. Holland, H. E. Huckle, G. Jasniewicz, A. Jean-Antoine Piccolo, O. Jimenez-Arranz, J. Juaristi Campillo, F. Julbe, L. Karbevska, P. Kervella, G. Kordopatis, A. J. Korn, A. Kospal, Z. Kostrzewa-Rutkowska, K. Kruszynska, M. Kun, P. Laizeau, S. Lambert, A. F. Lanza, Y. Lasne, J. -F. Le Campion, Y. Lebreton, T. Lebzelter, S. Leccia, N. Leclerc, I. Lecoeur-Taibi, S. Liao, E. L. Licata, H. E. P. Lindstrom, T. A. Lister, E. Livanou, A. Lorca, C. Loup, P. Madrero Pardo, A. Magdaleno Romeo, S. Managau, R. G. Mann, M. Manteiga, J. M. Marchant, M. Marconi, J. Marcos, M. M. S. Marcos Santos, D. Marin Pina, S. Marinoni, F. Marocco, L. Martin Polo, J. M. Martin-Fleitas, G. Marton, N. Mary, A. Masip, D. Massari, A. Mastrobuono-Battisti, T. Mazeh, P. J. McMillan, S. Messina, D. Michalik, N. R. Millar, A. Mints, D. Molina, R. Molinaro, L. Molnar, G. Monari, M. Monguio, P. Montegriffo, A. Montero, R. Mor, A. Mora, R. Morbidelli, T. Morel, D. Morris, C. P. Murphy, I. Musella, Z. Nagy, L. Noval, F. Ocana, A. Ogden, C. Ordenovic, J. O. Osinde, C. Pagani, I. Pagano, L. Palaversa, P. A. Palicio, L. Pallas-Quintela, A. Panahi, S. Payne-Wardenaar, X. Penalosa Esteller, A. Penttila, B. Pichon, A. M. Piersimoni, F. -X. Pineau, E. Plachy, G. Plum, A. Prsa, L. Pulone, E. Racero, S. Ragaini, M. Rainer, C. M. Raiteri, M. Ramos-Lerate, P. Re Fiorentin, S. Regibo, P. J. Richards, C. Rios Diaz, A. Riva, H. -W. Rix, G. Rixon, N. Robichon, A. C. Robin, C. Robin, M. Roelens, H. R. O. Rogues, L. Rohrbasser, N. Rowell, F. Royer, D. Ruz Mieres, K. A. Rybicki, G. Sadowski, A. Saez Nunez, A. Sagrista Selles, J. Sahlmann, E. Salguero, N. Samaras, V. Sanchez Gimenez, N. Sanna, R. Santovena, M. Sarasso, M. S. Schultheis, E. Sciacca, M. Segol, J. C. Segovia, D. Segransan, D. Semeux, S. Shahaf, H. I. Siddiqui, A. Siebert, L. Siltala, A. Silvelo, E. Slezak, I. Slezak, R. L. Smart, O. N. Snaith, E. Solano, F. Solitro, D. Souami, J. Souchay, A. Spagna, L. Spina, F. Spoto, I. A. Steele, H. Steidelmueller, C. A. Stephenson, M. Suveges, J. Surdej, L. Szabados, E. Szegedi-Elek, F. Taris, M. B. Taylor, R. Teixeira, L. Tolomei, N. Tonello, F. Torra, J. Torra, G. Torralba Elipe, M. Trabucchi, A. T. Tsounis, C. Turon, A. Ulla, N. Unger, M. V. Vaillant, E. van Dillen, W. van Reeven, O. Vanel, A. Vecchiato, Y. Viala, D. Vicente, S. Voutsinas, M. Weiler, T. Wevers, L. Wyrzykowski, A. Yoldas, P. Yvard, H. Zhao, J. Zorec, S. Zucker, T. Zwitter
Summary: This study explores and identifies non-axisymmetric features in the Milky Way's disk using Gaia DR3 data. Spiral structures associated with star formation are mapped using hot OB stars and young open clusters, while the large-scale kinematic signature of the bar in the inner disc and streaming motions in the outer disc are revealed using red giant branch stars. The results provide valuable insights into the dynamical nature of the Milky Way's non-axisymmetric structures.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
C. Meldorf, A. Palmese, D. Brout, R. Chen, D. Scolnic, L. Kelsey, L. Galbany, W. G. Hartley, T. M. Davis, A. Drlica-Wagner, M. Vincenzi, J. Annis, M. Dixon, O. Graur, C. Lidman, A. Moller, P. Nugent, B. Rose, M. Smith, S. Allam, D. L. Tucker, J. Asorey, J. Calcino, D. Carollo, K. Glazebrook, G. F. Lewis, G. Taylor, B. E. Tucker, A. G. Kim, H. T. Diehl, M. Aguena, F. Andrade-Oliveira, D. Bacon, E. Bertin, S. Bocquet, D. Brooks, D. L. Burke, J. Carretero, M. Carrasco Kind, F. J. Castander, M. Costanzi, L. N. da Costa, S. Desai, P. Doel, S. Everett, I Ferrero, D. Friedel, J. Frieman, J. Garcia-Bellido, M. Gatti, D. Gruen, J. Gschwend, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, K. Kuehn, M. March, J. L. Marshall, F. Menanteau, R. Miquel, R. Morgan, F. Paz-Chinchon, M. E. S. Pereira, A. A. Plazas Malagon, E. Sanchez, V Scarpine, I Sevilla-Noarbe, E. Suchyta, G. Tarle, T. N. Varga
Summary: Cosmological analyses with type Ia supernovae often overlook the varying dust properties in host galaxies, resulting in inaccurate conclusions. In this study, we use advanced modeling to characterize the dust parameters of 1100 Dark Energy Survey SN host galaxies and find that host dust has important impacts on SN cosmology, including a wide range of dust law slope R-V, lower R-V in high-stellar mass hosts compared to low-mass hosts, and a significant correlation between the Hubble diagram residuals of red SNe Ia and host R-V. These findings confirm recent predictions based on dust and provide insights into the "mass step" and intrinsic scatter in SN Ia analyses.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
S. Moran, M. Fraser, R. Kotak, A. Pastorello, S. Benetti, S. J. Brennan, C. P. Gutierrez, E. Kankare, H. Kuncarayakti, S. Mattila, T. M. Reynolds, J. P. Anderson, P. J. Brown, S. Campana, K. C. Chambers, T-W Chen, M. Della Valle, M. Dennefeld, N. Elias-Rosa, L. Galbany, F. J. Galindo-Guil, M. Gromadzki, D. Hiramatsu, C. Inserra, G. Leloudas, T. E. Mueller-Bravo, M. Nicholl, A. Reguitti, M. Shahbandeh, S. J. Smartt, L. Tartaglia, D. R. Young
Summary: We present the five-year follow-up campaign of the long-lived type IIn supernova SN 2017hcc, which was found in a spiral dwarf host of near-solar metallicity. The supernova shows a slow evolution both spectroscopically and photometrically, similar to SN 2010jl. The infrared excess and blueshifts in the Balmer lines suggest the presence of an IR light echo and the condensation of new dust grains at later epochs.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Qinan Wang, Patrick Armstrong, Yossef Zenati, Ryan Ridden-Harper, Armin Rest, Iair Arcavi, Charles D. Kilpatrick, Ryan J. Foley, Brad E. Tucker, Chris Lidman, Thomas L. Killestein, Melissa Shahbandeh, Joseph P. Anderson, Rodrigo Angulo, Chris Ashall, Jamison Burke, Ting-Wan Chen, Sophie von Coelln, Kyle A. Dalrymple, Kyle W. Davis, Michael D. Fulton, Lluis Galbany, Estefania Padilla Gonzalez, Bore Gao, Mariusz Gromadzki, D. Andrew Howell, Nada Ihanec, Jacob E. Jencson, David O. Jones, Joseph D. Lyman, Curtis McCully, Tomas E. Muller-Bravo, Megan Newsome, Matt Nicholl, David O'Neill, Craig Pellegrino, Sofia Rest, Stephen J. Smartt, Ken Smith, Shubham Srivastav, Giacomo Terreran, Samaporn Tinyanont, David R. Young, Alfredo Zenteno
Summary: We present early observations and analysis of the double-peaked Type IIb supernova SN 2021zby. The inferred properties of its progenitor are consistent with a red supergiant or yellow supergiant, similar to other SNe IIb with a double-peaked feature. This study validates the importance of high cadence and early coverage in resolving the shock-cooling light curve shape, and the necessity of multiband observations to fully constrain the progenitor properties.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Shourya Khanna, Sanjib Sharma, Joss Bland-Hawthorn, Michael Hayden
Summary: We measured the 3D kinematics of the Galactic disc using astrometry from Gaia EDR3, line-of-sight velocities from Gaia DR2 and spectroscopic surveys, and constructed an axisymmetric model for the mean velocity field. The residual velocity field and line-of-sight velocities were obtained by subtracting the mean velocity field, and the velocity residuals were quantified using the power spectrum. We found that the streaming motion was most significant in the V-R component and overlapped spatially with spiral arm models in the Galaxy.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
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
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
J. Lee, M. Acevedo, M. Sako, M. Vincenzi, D. Brout, B. Sanchez, R. Chen, T. M. Davis, M. Jarvis, D. Scolnic, H. Qu, L. Galbany, R. Kessler, J. Lasker, M. Sullivan, P. Wiseman, M. Aguena, S. Allam, O. Alves, F. Andrade-Oliveira, E. Bertin, S. Bocquet, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. da Costa, M. E. S. Pereira, J. De Vicente, S. Desai, H. T. Diehl, P. Doel, S. Everett, I. Ferrero, D. Friedel, J. Frieman, J. Garcia-Bellido, D. W. Gerdes, D. Gruen, R. A. Gruendl, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, S. Kent, K. Kuehn, N. Kuropatkin, J. Mena-Fernandez, R. Miquel, R. L. C. Ogando, A. Palmese, A. Pieres, A. A. Plazas Malagon, M. Raveri, K. Reil, M. Rodriguez-Monroy, E. Sanchez, V. Scarpine, I. Sevilla-Noarbe, M. Smith, E. Suchyta, G. Tarle, C. To, N. Weaverdyck
Summary: This study investigated the impact of atmospheric effects on photometric supernova flux measurements for ground-based observations. Corrections were made for differential chromatic refraction (DCR) and wavelength-dependent seeing, and their impact on cosmological parameters w and omega (m) was analyzed. The study quantified astrometric offsets caused by DCR and predicted the shapes of point-spread functions (PSFs) with DCR and wavelength-dependent seeing. Magnitude corrections were applied to the DES-SN5YR photometric pipeline. It was found that not accounting for astrometric offsets and changes in PSF shape resulted in minor biases in w and omega (m), indicating the importance of considering these corrections for future surveys.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
M. Deckers, O. Graur, K. Maguire, L. Shingles, S. J. Brennan, J. P. Anderson, J. Burke, T-W Chen, L. Galbany, M. J. P. Grayling, C. P. Gutierrez, L. Harvey, D. Hiramatsu, D. A. Howell, C. Inserra, T. Killestein, C. McCully, T. E. Muller-Bravo, M. Nicholl, M. Newsome, E. Padilla Gonzalez, C. Pellegrino, G. Terreran, J. H. Terwel, M. Toy, D. R. Young
Summary: We conducted an in-depth study on the late-time near-infrared plateau in Type Ia supernovae (SNe Ia), expanding the sample with new observations. We confirmed that there is no plateau in the K-s band for most normal SNe Ia. SNe Ia with broader optical light curves at peak tend to have higher average brightness on the plateau in J and H.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Bjorn H. C. Emonts, Matthew D. Lehnert, Ilsang Yoon, Nir Mandelker, Montserrat Villar-Martin, George K. Miley, Carlos De Breuck, Miguel A. Perez-Torres, Nina A. Hatch, Pierre Guillard
Summary: The growth of galaxies is fueled by the accretion of gas from the surrounding and intergalactic regions in the early Universe. Simulation studies suggest that cold gas streams penetrate the dark matter halos of galaxies, providing the necessary material for sustained star formation. In this study, we detected a filamentary gas stream extending 100 kiloparsecs, connecting to the massive radio galaxy 4C 41.17. By observing the [C I] line emission from atomic carbon, we found that the gas stream contains neutral atomic or molecular hydrogen gas, serving as the raw material for the vigorous starburst happening in the galaxy.
Article
Astronomy & Astrophysics
Yeny Garay-Solis, Jorge K. Barrera-Ballesteros, Dario Colombo, Sebastian F. Sanchez, Alejandra Z. Lugo-Aranda, Vicente Villanueva, Tony Wong, Alberto D. Bolatto
Summary: Galactic interactions and mergers play a crucial role in galaxy evolution. Analyzing the data from 236 star-forming CALIFA galaxies, we find that interactions and mergers lead to an increase in the fraction of molecular gas in the center of galaxies compared to isolated ones. Our results suggest that the change in star formation efficiency is the main driver for the enhancement or suppression of central star formation, except in merging galaxies where the increased star formation appears to be driven by an increase in molecular gas. We propose that gravitational torques from interactions and mergers transport cold molecular gas inwards, increasing the gas fraction without necessarily increasing star formation.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Sophie Lebowitz, Bjorn Emonts, Donald M. Terndrup, Joseph N. Burchett, J. Xavier Prochaska, Guillaume Drouart, Montserrat Villar-Martin, Matthew Lehnert, Carlos De Breuck, Joel Vernet, Katherine Alatalo
Summary: The Dragonfly galaxy is the most infrared-luminous radio galaxy at redshift z > 2, and it consists of two merging galaxies with rotating disks. The radio jet originates from one galaxy and brightens when it hits the disk of the other galaxy. A molecular outflow is associated with the radio host galaxy, but not with the other galaxies involved in the merger. The presence of a metal-rich and extended circumgalactic medium is confirmed.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Caleb Lammers, Kartheik G. Iyer, Hector Ibarra-Medel, Camilla Pacifici, Sebastian F. Sanchez, Sandro Tacchella, Joanna Woo
Summary: By comparing 279 low-redshift AGN galaxies with inactive control galaxies, researchers reconstructed nonparametric star formation histories and found that AGN feedback can suppress star formation in the central regions.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Yixian Cao, Tony Wong, Alberto D. Bolatto, Adam K. Leroy, Erik Rosolowsky, Dyas Utomo, Sebastian F. Sanchez, Jorge K. Barrera-Ballesteros, Rebecca C. Levy, Dario Colombo, Leo Blitz, Stuart N. Vogel, Johannes Puschnig, Vicente Villanueva, Monica Rubio
Summary: This article presents (CO)-C-13 (J=1->0) observations for the EDGE-CALIFA survey, detecting (CO)-C-13 in 41 galaxies via integrated line flux and in 30 galaxies via integrated line intensity. The line ratio R-12/13 is systematically compared with the properties of stars and ionized gas, with higher R-12/13 values found in interacting galaxies. The global R-12/13 slightly increases with infrared color but appears insensitive to other host-galaxy properties. The radial profiles of R-12/13 are flat across the sample and show a weak correlation with gas and stellar properties. These findings suggest that R-12/13 is not a sensitive tracer for ISM properties in complex galaxy environments.
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
(2023)
Article
Astronomy & Astrophysics
R. Hlozek, A. I. Malz, K. A. Ponder, M. Dai, G. Narayan, E. E. O. Ishida, T. Allam Jr, A. Bahmanyar, X. Bi, R. Biswas, K. Boone, S. Chen, N. Du, A. Erdem, L. Galbany, A. Garreta, S. W. Jha, D. O. Jones, R. Kessler, M. Lin, J. Liu, M. Lochner, A. A. Mahabal, K. S. Mandel, P. Margolis, J. R. Martinez-Galarza, J. D. McEwen, D. Muthukrishna, Y. Nakatsuka, T. Noumi, T. Oya, H. V. Peiris, C. M. Peters, J. F. Puget, C. N. Setzer, S. Siddhartha, S. Stefanov, T. Xie, L. Yan, K. -h. Yeh, W. Zuo
Summary: Next-generation surveys like LSST will generate a large number of discoveries of transients and variable stars. In preparation for this, the PLAsTiCC competition was developed to encourage the development of robust classifiers. Over 1000 teams participated in PLAsTiCC, employing various machine-learning techniques, ultimately improving the state of the art in astronomy. This paper summarizes the most promising methods and evaluates their results, highlighting future directions for classifier development and simulation needs.
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
(2023)
