Article
Astronomy & Astrophysics
Kristi A. Webb, Alexa Villaume, Seppo Laine, Aaron J. Romanowsky, Michael Balogh, Pieter van Dokkum, Duncan A. Forbes, Jean Brodie, Christopher Martin, Matt Matuszewski
Summary: In this study, the star formation history (SFH) of the ultradiffuse galaxy DF44 was investigated based on photometry and spectroscopy. The results suggest that DF44 went through early star formation and rapid quenching, challenging some simulation-based scenarios of UDG formation.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Timothy Lingard, Karen L. Masters, Coleman Krawczyk, Chris Lintott, Sandor Kruk, Brooke Simmons, William Keel, Robert C. Nichol, Elisabeth Baeten
Summary: The study presents a hierarchical Bayesian approach to galaxy pitch angle determination, finds no correlation between bulge and bar strength and pitch angle, and tests a model for spiral arm winding which suggests most winding spirals disappear at pitch angles larger than 10 degrees.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Alice Desmons, Sarah Brough, Cristina Martinez-Lombilla, Roberto De Propris, Benne Holwerda, Angel R. Lopez-Sanchez
Summary: We compare merging galaxy populations detected by visual identification of tidal features and spectroscopically detected close pairs of galaxies to investigate potential biases in our understanding of galaxy interactions. Our study uses a sample of 852 galaxies from the GAMA survey and compares visual classifications of tidal features to the GAMA spectroscopic close-pair sample. We find evidence that close pair samples are more likely to detect early stage mergers, while the tidal feature sample detects later-stage mergers.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Javier Roman, Michael G. Jones, Mireia Montes, Lourdes Verdes-Montenegro, Julian Garrido, Susana Sanchez
Summary: This study explores the properties of a peculiar object at the tip of an H i tail from Hickson Compact Group 16, determining its stellar age and metallicity through multiband photometry. The object, structurally similar to diffuse galaxies, will fade over approximately 2 billion years of evolution, becoming undetectable in optical observations. Its high hydrogen mass and future undetectable stellar component will align it with the properties of dark galaxies, emphasizing the impact of stellar fading in hiding aged stellar components in high metallicity systems like tidal dwarfs.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Jinsu Rhee, Pascal Elahi, Sukyoung K. Yi
Summary: The study addresses the inefficiency and decreased performance of the friends-of-friends algorithm in high-resolution cosmological simulations, proposing and implementing improvements to enhance galaxy detection efficiency.
ASTROPHYSICAL JOURNAL
(2022)
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
S. Pandey, E. Krause, J. DeRose, N. MacCrann, B. Jain, M. Crocce, J. Blazek, A. Choi, H. Huang, C. To, X. Fang, J. Elvin-Poole, J. Prat, A. Porredon, L. F. Secco, M. Rodriguez-Monroy, N. Weaverdyck, Y. Park, M. Raveri, E. Rozo, E. S. Rykoff, G. M. Bernstein, C. Sanchez, M. Jarvis, M. A. Troxel, G. Zacharegkas, C. Chang, A. Alarcon, O. Alves, A. Amon, F. Andrade-Oliveira, E. Baxter, K. Bechtol, M. R. Becker, H. Camacho, A. Campos, A. Carnero Rosell, M. Carrasco Kind, R. Cawthon, R. Chen, P. Chintalapati, C. Davis, E. Di Valentino, H. T. Diehl, S. Dodelson, C. Doux, A. Drlica-Wagner, K. Eckert, T. F. Eifler, F. Elsner, S. Everett, A. Farahi, A. Ferte, P. Fosalba, O. Friedrich, M. Gatti, G. Giannini, D. Gruen, R. A. Gruendl, I Harrison, W. G. Hartley, E. M. Huff, D. Huterer, A. Kovacs, P. F. Leget, J. McCullough, J. Muir, J. Myles, A. Navarro-Alsina, Y. Omori, R. P. Rollins, A. Roodman, R. Rosenfeld, I Sevilla-Noarbe, E. Sheldon, T. Shin, A. Troja, I Tutusaus, T. N. Varga, R. H. Wechsler, B. Yanny, B. Yin, Y. Zhang, J. Zuntz, T. M. C. Abbott, M. Aguena, S. Allam, J. Annis, D. Bacon, E. Bertin, D. Brooks, D. L. Burke, J. Carretero, C. Conselice, M. Costanzi, L. N. da Costa, M. E. S. Pereira, J. De Vicente, J. P. Dietrich, P. Doel, A. E. Evrard, I Ferrero, B. Flaugher, J. Frieman, J. Garcia-Bellido, E. Gaztanaga, D. W. Gerdes, T. Giannantonio, J. Gschwend, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. J. James, T. Jeltema, K. Kuehn, N. Kuropatkin, O. Lahav, M. Lima, H. Lin, M. A. G. Maia, J. L. Marshall, P. Melchior, F. Menanteau, C. J. Miller, R. Miquel, J. J. Mohr, R. Morgan, A. Palmese, F. Paz-Chinchon, D. Petravick, A. Pieres, A. A. Plazas Malagon, E. Sanchez, V Scarpine, S. Serrano, M. Smith, M. Soares-Santos, E. Suchyta, G. Tarle, D. Thomas, J. Weller
Summary: This study uses data from Dark Energy Survey (DES) year-3 to constrain cosmological parameters and galaxy-bias parameters. The analysis combines measurements of galaxy clustering and galaxy-galaxy lensing. The study finds inconsistencies between the galaxy clustering and galaxy-galaxy lensing measurements, likely due to systematic measurement errors. By changing the selection criteria for the galaxy sample, the study obtains more consistent results.
Article
Astronomy & Astrophysics
Leonard E. C. Romano, Kentaro Nagamine, Hiroyuki Hirashita
Summary: This study computes the evolution of the grain size distribution in a Milky Way-like galaxy using numerical simulations and introduces diffusion and multiphase subgrid models to address previous issues.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Nicole Thomas, Romeel Dave
Summary: In this study, the environmental properties of z = 0 radio galaxies were investigated using the SIMBA cosmological hydrodynamic simulation. Different populations of radio galaxies, such as high and low excitation radio galaxies (HERGs and LERGs), were identified and studied for their global properties. Significant differences were found in the environmental characteristics of HERGs and LERGs, with HERG satellites displaying lower values of certain properties compared to HERG centrals.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Matias Bravo, Aaron S. G. Robotham, Claudia del P. Lagos, Luke J. M. Davies, Sabine Bellstedt, Jessica E. Thorne
Summary: Mapping the evolution of galaxy colours is fundamental to understand the processes involved in galaxy evolution. This study reconstructs the colour evolution of low-redshift galaxies and finds characteristics of the red and blue galaxy populations over cosmic time. The results suggest that a model with only two populations (blue and red) is favored, without evidence for a third 'green' population.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Lori E. Porter, Benne W. Holwerda, Sandor Kruk, Maritza Lara-Lopez, Kevin A. Pimbblet, Christopher P. A. Henry, Sarah Casura, Lee S. Kelvin
Summary: The large-scale structure of the Universe consists of galaxy filaments, tendrils, and voids. Voids are underdense regions that make up the majority of the Universe's volume. This study compares void galaxies, which are expected to be isolated, with field galaxies in terms of their physical properties and morphology using data from the GAMA and Galaxy Zoo surveys. The results show that void galaxies are disc-dominated and have predominantly round bulges, in contrast with field galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Gissel P. Montaguth, Sergio Torres-Flores, Antonela Monachesi, Facundo A. Gomez, Ciria Lima-Dias, Arianna Cortesi, Claudia Mendes de Oliveira, Eduardo Telles, Swayamtrupta Panda, Marco Grossi, Paulo A. A. Lopes, Jose A. Hernandez-Jimenez, Antonio Kanaan, Tiago Ribeiro, William Schoenell
Summary: This article examines the morphological disturbances caused by galaxy-galaxy interactions in compact groups (CGs) of galaxies. It identifies a population of smaller and more compact galaxies in CGs, which is not observed in the control sample. The study suggests that CGs promote morphological and physical transformations, highlighting their potential as ideal systems for studying galaxy pre-processing.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
S. Lyla Jung, Douglas Rennehan, Vida Saeedzadeh, Arif Babul, Michael Tremmel, Thomas R. Quinn, S. Ilani Loubser, E. O'Sullivan, Sukyoung K. Yi
Summary: Contrary to stereotypes, observed brightest group galaxies (BGGs) exhibit diversity in their properties. Using the Romulus simulations, this study finds that Romulus reproduces the diversity of BGGs well, albeit with a tendency towards a lower fraction of quenched BGGs compared to observations. The study also reveals the existence of both early-type and late-type galaxies, as well as galaxies transitioning from late-type to early-type due to strong dynamical interactions with satellites.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
A. Grokhovskaya, S. N. Dodonov, T. A. Movsessian, S. S. Kotov
Summary: The study presents a catalogue of approximately 19,000 galaxies observed using a one-meter Schmidt telescope, obtaining spectral energy distributions for further analysis. Photometric measurements and redshift estimation provided information on the main properties of the stellar population of galaxies. The results showed that red sequence galaxies are older and more massive than blue cloud galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
J. Mendez-Abreu, L. Costantin, S. Kruk
Summary: This study examines the bar fraction in the SMACS0723 galaxy cluster and finds that it is strongly influenced by the stellar luminosity (or stellar mass). Compared to local clusters like Virgo and Coma, the SMACS0723 cluster has a lower bar fraction in low-mass galaxies and a slightly lower bar fraction in high-mass galaxies. However, at high masses, the bar fraction in SMACS0723 is higher than that in field galaxies at similar redshifts, indicating the impact of improved capabilities of the JWST telescope.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Shuowen Jin, Nikolaj B. Sillassen, Georgios E. Magdis, Aswin P. Vijayan, Gabriel B. Brammer, Vasily Kokorev, John R. Weaver, Raphael Gobat, Clara Gimenez-Arteaga, Francesco Valentino, Malte Brinch, Carlos Gomez-Guijarro, Marko Shuntov, Sune Toft, Thomas R. Greve, David Blanquez Sese
Summary: We report the discovery of a compact group of galaxies, CGG-z5, in the EGS field covered by the JWST/CEERS survey. It contains six candidate members within a projected area of 1.5'' x 300 (10 x 20 kpc(2)), with a narrow range of photometric redshifts 5.0 < z < 5.3. CGG-z5 is a proto-massive galaxy captured during a short-lived phase of massive galaxy formation, as indicated by its low stellar masses and compactness.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Malte Brinch, Thomas R. Greve, John R. Weaver, Gabriel Brammer, Olivier Ilbert, Marko Shuntov, Shuowen Jin, Daizhong Liu, Clara Gimenez-Arteaga, Caitlin M. Casey, Iary Davidson, Seiji Fujimoto, Anton M. Koekemoer, Vasily Kokorev, Georgios Magdis, H. J. McCracken, Conor J. R. McPartland, Bahram Mobasher, David B. B. Sanders, Sune Toft, Francesco Valentino, Giovanni Zamorani, Jorge Zavala
Summary: We conducted a systematic search for protocluster candidates at z >= 6 in the COSMOS field. We found 15 significant candidate galaxy overdensities across the redshift range 6 <= z <= 7.7. The majority of the galaxies appear to be on the galaxy main sequence at their respective epochs. The number and masses of the halos associated with our protocluster candidates are consistent with expectations.
ASTROPHYSICAL JOURNAL
(2023)
Article
Optics
Joseph S. Allcock, Scott A. Silburn, Ray M. Sharples, James R. Harrison, Neil J. Conway, Ting Long, Nie Lin
Summary: Imaging birefringent interferometers are used for plasma flow measurement through the Doppler shift of spectral emission lines. A new method for wavelength calibration is presented, which does not require measurement at the rest wavelength or a tuneable laser source. Fringes from gas-discharge lamps are used to constrain an instrument model for calibration. Circular statistics are used to handle the 2 pi ambiguity of interferogram phase data, allowing calibration over a wide wavelength range.
Article
Astronomy & Astrophysics
J. Guy, S. Bailey, A. Kremin, Shadab Alam, D. M. Alexander, C. Allende Prieto, S. BenZvi, A. S. Bolton, D. Brooks, E. Chaussidon, A. P. Cooper, K. Dawson, A. de la Macorra, A. Dey, Biprateep Dey, G. Dhungana, D. J. Eisenstein, A. Font-Ribera, J. E. Forero-Romero, E. Gaztanaga, S. Gontcho A. Gontcho, D. Green, K. Honscheid, M. Ishak, R. Kehoe, D. Kirkby, T. Kisner, Sergey E. Koposov, Ting-Wen Lan, M. Landriau, L. Le Guillou, Michael E. Levi, C. Magneville, Christopher J. Manser, P. Martini, Aaron M. Meisner, R. Miquel, J. Moustakas, Adam D. Myers, Jeffrey A. Newman, Jundan Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, A. Raichoor, C. Ravoux, A. J. Ross, E. F. Schlafly, D. Schlegel, M. Schubnell, Ray M. Sharples, Gregory Tarle, B. A. Weaver, Christophe Yeche, Rongpu Zhou, Zhimin Zhou, H. Zou
Summary: The Dark Energy Spectroscopic Instrument (DESI) is a purpose-built instrument on the 4 m Mayall Telescope at Kitt Peak National Observatory for conducting a redshift survey. With a spectroscopic data processing pipeline, DESI generates wavelength- and flux-calibrated spectra, spectroscopic classifications, and redshift measurements. The pipeline has exceeded the project's requirements for redshift performance, achieving a purity greater than 99% for all target classes.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
D. Blanquez-Sese, C. Gomez-Guijarro, G. E. Magdis, B. Magnelli, R. Gobat, E. Daddi, M. Franco, K. Whitaker, F. Valentino, S. Adscheid, E. Schinnerer, A. Zanella, M. Xiao, T. Wang, D. Liu, V. Kokorev, D. Elbaz
Summary: We conducted a 1.1mm stacking analysis of moderately massive quiescent galaxies at < z > similar to 1.5 and detected the presence of cold dust continuum emission, indicating the presence of dust and gas mass. The gas fraction in these galaxies was found to be consistent with the results of previous studies and supports the idea of gas retention in high-z quiescent galaxies. Furthermore, we found an anti-correlation between the gas fraction and stellar mass, suggesting a possible selection bias in previous studies.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Han Lei, Francesco Valentino, Georgios E. Magdis, Vasily Kokorev, Daizhong Liu, Dimitra Rigopoulou, Shuowen Jin, Emanuele Daddi
Summary: We present new CO (J = 5 4 and 7 6) and [C I] (P-3(2) - P-3(1) and P-3(1) - P-3(0)) emission line observations of the star-forming galaxy D49 at the massive end of the main sequence at z = 3. Our results suggest that high-J CO luminosities in D49 exceed the expected location on empirical correlations with infrared luminosity. Additionally, we find [CI] emission consistent with the literature trends.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Ryosuke Uematsu, Yoshihiro Ueda, Kotaro Kohno, Satoshi Yamada, Yoshiki Toba, Seiji Fujimoto, Bunyo Hatsukade, Hideki Umehata, Daniel Espada, Fengwu Sun, Georgios E. E. Magdis, Vasily Kokorev, Yiping Ao
Summary: We present the multiwavelength properties of millimeter galaxies with X-ray detected AGNs from the ALMA Lensing Cluster Survey (ALCS). Our study shows that a wide-area survey with ALMA and Chandra can selectively detect intense growth of both galaxies and supermassive black holes in the high-redshift universe.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Francesco Valentino, Gabriel Brammer, Katriona M. L. Gould, Vasily Kokorev, Seiji Fujimoto, Christian Kragh Jespersen, Aswin P. Vijayan, John R. Weaver, Kei Ito, Masayuki Tanaka, Olivier Ilbert, Georgios E. Magdis, Katherine E. Whitaker, Andreas L. Faisst, Anna Gallazzi, Steven Gillman, Clara Gimenez-Arteaga, Carlos Gomez-Guijarro, Mariko Kubo, Kasper E. Heintz, Michaela Hirschmann, Pascal Oesch, Masato Onodera, Francesca Rizzo, Minju Lee, Victoria Strait, Sune Toft
Summary: We conducted a systematic search in 11 JWST fields and identified candidate quiescent galaxies in the distant universe. By combining JWST and Hubble Space Telescope data, we selected a sample of about 80 candidate quiescent galaxies at 3 < z < 5 using two different methods. The comoving number densities of massive quiescent galaxies are consistent with previous estimates, but there are significant field-to-field variations.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Arjun Dey, Joan R. Najita, Sergey E. Koposov, J. Josephy-Zack, Gabriel Maxemin, Eric F. Bell, C. Poppett, E. Patel, L. Beraldo e Silva, A. Raichoor, D. Schlegel, D. Lang, A. Meisner, Adam D. Myers, J. Aguilar, S. Ahlen, C. Allende Prieto, D. Brooks, A. P. Cooper, K. S. Dawson, A. de la Macorra, P. Doel, A. Font-Ribera, Juan Garcia-Bellido, S. Gontcho A. Gontcho, J. Guy, K. Honscheid, R. Kehoe, T. Kisner, A. Kremin, M. Landriau, L. Le Guillou, Michael E. Levi, T. S. Li, Paul Martini, R. Miquel, J. Moustakas, Jundan Nie, N. Palanque-Delabrouille, F. Prada, E. F. Schlafly, Ray M. Sharples, Gregory Tarle, Yuan-Sen Ting, L. Tyas, M. Valluri, Risa H. Wechsler, H. Zou
Summary: We present observations of the inner halo of M31, revealing detailed kinematics of a recent galactic immigration event. The results show coherent kinematic structures in positions and velocities of individual stars, suggesting the substructure in the inner halo is a result of a single event 1-2 billion years ago. The study also finds metal-rich stars in the detected substructures, indicating an extended star formation history of the immigrating galaxy. The results have important implications for studying galactic scale stars and immigration histories of galaxies.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Andrew P. Cooper, Sergey E. Koposov, Carlos Allende Prieto, Christopher J. Manser, Namitha Kizhuprakkat, Adam D. Myers, Arjun Dey, Boris T. Gansicke, Ting S. Li, Constance Rockosi, Monica Valluri, Joan Najita, Alis Deason, Anand Raichoor, M. -Y. Wang, Y. -S. Ting, Bokyoung Kim, Andreia Carrillo, Wenting Wang, Leandro Beraldo e Silva, Jiwon Jesse Han, Jiani Ding, Miguel Sanchez-Conde, Jessica N. Aguilar, Steven Ahlen, Stephen Bailey, Vasily Belokurov, David Brooks, Katia Cunha, Kyle Dawson, Axel de la Macorra, Peter Doel, Daniel J. Eisenstein, Parker Fagrelius, Kevin Fanning, Andreu Font-Ribera, Jaime E. Forero-Romero, Enrique Gaztanaga, Satya Gontcho A. Gontcho, Julien Guy, Klaus Honscheid, Robert Kehoe, Theodore Kisner, Anthony Kremin, Martin Landriau, Michael E. Levi, Paul Martini, Aaron M. Meisner, Ramon Miquel, John Moustakas, Jundan J. D. Nie, Nathalie Palanque-Delabrouille, Will J. Percival, Claire Poppett, Francisco Prada, Nabeel Rehemtulla, Edward Schlafly, David Schlegel, Michael Schubnell, Ray M. Sharples, Gregory Tarle, Risa H. Wechsler, David H. Weinberg, Zhimin Zhou, Hu Zou
Summary: We describe the Milky Way Survey (MWS), which will be conducted with the Dark Energy Spectroscopic Instrument (DESI), aiming to observe approximately seven million stars and investigate the Galactic structure and stellar evolution. The MWS target selection scheme focuses on the thick disk and stellar halo, including rare stellar types such as white dwarfs, low-mass stars near the Sun, and horizontal branch stars. Our pipelines for deriving radial velocities, atmospheric parameters, and chemical abundances are validated using the DESI Survey Validation program (SV) data, showing good agreement with expectations from mock catalogs and previous surveys.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
K. E. Heintz, C. Gimenez-Arteaga, S. Fujimoto, G. Brammer, D. Espada, S. Gillman, J. Gonzalez-Lopez, T. R. Greve, Y. Harikane, B. Hatsukade, K. K. Knudsen, A. M. Koekemoer, K. Kohno, V. Kokorev, M. M. Lee, G. E. Magdis, E. J. Nelson, F. Rizzo, R. L. Sanders, D. Schaerer, A. E. Shapley, V. B. Strait, S. Toft, F. Valentino, A. van der Wel, A. P. Vijayan, D. Watson, F. E. Bauer, C. R. Christiansen, S. N. Wilson
Summary: We conducted a joint analysis of the galaxy S04590 at z = 8.496 using data from JWST and ALMA observations. We determined the physical properties of the galaxy and estimated its gas mass and metal content. Our analysis also provided constraints on the dust-to-gas and dust-to-metal ratios of galaxies in the epoch of reionization. This study highlights the synergy between ALMA and JWST in characterizing the properties of early galaxies.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Vasily Kokorev, Shuowen Jin, Georgios E. Magdis, Karina I. Caputi, Francesco Valentino, Pratika Dayal, Maxime Trebitsch, Gabriel Brammer, Seiji Fujimoto, Franz Bauer, Edoardo Iani, Kotaro Kohno, David Blanquez Sese, Carlos Gomez-Guijarro, Pierluigi Rinaldi, Rafael Navarro-Carrera
Summary: Using JWST/NIRCam observations, this study provides a spatially resolved overview of a HST-dark galaxy at z = 2.58. The galaxy is largely invisible in the NIRCam's near-infrared bands but well detected and resolved in the long-wavelength bands, showing a clear spiral shape. Combining ALMA and Herschel data, the galaxy is identified as an edge-on dusty spiral with high dust attenuation and a significant star formation rate.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
Carlos Gomez-Guijarro, Benjamin Magnelli, David Elbaz, Stijn Wuyts, Emanuele Daddi, Aurelien Le Bail, Mauro Giavalisco, Mark Dickinson, Pablo G. Perez-Gonzalez, Pablo Arrabal Haro, Micaela B. Bagley, Laura Bisigello, Veronique Buat, Denis Burgarella, Antonello Calabro, Caitlin M. Casey, Yingjie Cheng, Laure Ciesla, Avishai Dekel, Henry C. Ferguson, Steven L. Finkelstein, Maximilien Franco, Norman A. Grogin, Benne W. Holwerda, Shuowen Jin, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Vasily Kokorev, Arianna S. Long, Ray A. Lucas, Georgios E. Magdis, Casey Papovich, Nor Pirzkal, Lise-Marie Seille, Sandro Tacchella, Maxime Tarrasse, Francesco Valentino, Alexander de la Vega, Stephen M. Wilkins, Mengyuan Xiao, L. Y. Aaron Yung
Summary: This study investigates the drivers of dust attenuation in the JWST era and finds that stellar mass is the primary factor. Size and orientation do not show a clear link with dust attenuation. Highly dust attenuated star-forming galaxies are characterized by their compact size.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
D. Blanquez-Sese, G. E. Magdis, C. Gomez-Guijarro, M. Shuntov, V. Kokorev, G. Brammer, F. Valentino, T. Diaz-Santos, E. -D. Paspaliaris, D. Rigopoulou, J. Hjorth, D. Langeroodi, R. Gobat, S. Jin, N. B. Sillassen, S. Gillman, T. R. Greve, M. Lee
Summary: This study investigates the mid-infrared (MIR) emission of quiescent galaxies (QGs) beyond the local universe. By analyzing the MIR spectra of intermediate redshift QGs, the researchers find that these galaxies have a range of MIR spectra composed of stellar and dust components, with the dust emission being much fainter than that of star-forming galaxies. The observed scatter in the MIR spectra can be attributed to variations in dust continuum levels and/or the presence of polycyclic aromatic hydrocarbon features. The study also provides a panchromatic UV to radio spectral energy distribution (SED) template for future exploration of the interstellar medium of high-redshift QGs.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Hollis B. Akins, Caitlin M. Casey, Natalie Allen, Micaela B. Bagley, Mark Dickinson, Steven L. Finkelstein, Maximilien Franco, Santosh Harish, Pablo Arrabal Haro, Olivier Ilbert, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Daizhong Liu, Arianna S. Long, Henry Joy McCracken, Louise Paquereau, Casey Papovich, Nor Pirzkal, Jason Rhodes, Brant E. Robertson, Marko Shuntov, Sune Toft, Guang Yang, Guillermo Barro, Laura Bisigello, Veronique Buat, Jaclyn B. Champagne, Olivia Cooper, Luca Costantin, Alexander de la Vega, Nicole E. Drakos, Andreas Faisst, Adriano Fontana, Seiji Fujimoto, Steven Gillman, Carlos Gomez-Guijarro, Ghassem Gozaliasl, Nimish P. Hathi, Christopher C. Hayward, Michaela Hirschmann, Benne W. Holwerda, Shuowen Jin, Dale D. Kocevski, Vasily Kokorev, Erini Lambrides, Ray A. Lucas, Georgios E. Magdis, Benjamin Magnelli, Jed McKinney, Bahram Mobasher, Pablo G. Perez-Gonzalez, R. Michael Rich, Lise-Marie Seille, Margherita Talia, C. Megan Urry, Francesco Valentino, Katherine E. Whitaker, L. Y. Aaron Yung, Jorge Zavala, COSMOS-Web Team, CEERS Team
Summary: We conducted a search for highly obscured, extremely red galaxies at z>7 using JWST/NIRCam+MIRI imaging, and identified two galaxies, COS-z8M1 and CEERS-z7M1, with best-fit photometric redshifts of z = 8.4(-0.4)(+0.3) and 7.6(-0.1)(+0.1) respectively. These galaxies are compact, highly obscured, and likely have strong emission lines contributing to their photometry. If confirmed at z similar to 8, they could represent a significant population of highly dust-obscured galaxies at cosmic dawn.
ASTROPHYSICAL JOURNAL
(2023)