Article
Astronomy & Astrophysics
Lior Shamir
Summary: Rare extragalactic objects often require computer algorithms for detection due to the impracticality of manual search. This paper introduces an unsupervised machine learning algorithm for automatically detecting outlier galaxy images, reducing the data set significantly while allowing practical manual identification. The algorithm successfully identified 147 objects that would be challenging to identify without automation.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Behnam Javanmardi, Antoine Merand, Pierre Kervella, Louise Breuval, Alexandre Gallenne, Nicolas Nardetto, Wolfgang Gieren, Grzegorz Pietrzynski, Vincent Hocde, Simon Borgniet
Summary: This study presents an independent detailed analysis of Cepheids in NGC 5584, finding distance modulus measurements consistent with previous studies. Additionally, tighter relations between the periods and amplitude ratios of Cepheids in this galaxy were discovered, prompting further investigation of their potential impact on direct H-0 measurements.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
William C. Keel, Jean Tate, O. Ivy Wong, Julie K. Banfield, Chris J. Lintott, Karen L. Masters, Brooke D. Simmons, Claudia Scarlata, Carolin Cardamone, Rebecca Smethurst, Lucy Fortson, Jesse Shanahan, Sandor Kruk, Izzy L. Garland, Colin Hancock, David O'Ryan
Summary: The Gems of the Galaxy Zoos project utilizes short windows in the Hubble Space Telescope's schedule to study a broad range of galaxy morphology topics, combining objects selected by volunteers in the Galaxy Zoo and Radio Galaxy Zoo projects. Public input via a voting process is integrated into the final selection of targets for many science categories.
ASTRONOMICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Sal Wanying Fu, Daniel R. Weisz, Else Starkenburg, Nicolas Martin, Alessandro Savino, Michael Boylan-Kolchin, Patrick Cote, Andrew E. Dolphin, Alexander P. Ji, Nicolas Longeard, Mario L. Mateo, Ekta Patel, Nathan R. Sandford
Summary: The research team used the Hubble Space Telescope to measure the metallicities of 463 stars in 13 Milky Way ultra-faint dwarf galaxies. They found that the mass-metallicity relationship does not hold for these faint systems and the proportion of metal-poor stars is higher than previous studies.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Sal Wanying Fu, Daniel R. Weisz, Else Starkenburg, Nicolas Martin, Alexander P. Ji, Ekta Patel, Michael Boylan-Kolchin, Patrick Cote, Andrew E. Dolphin, Nicolas Longeard, Mario L. Mateo, Nathan R. Sandford
Summary: By using deep Hubble Space Telescope (HST) CaHK imaging, this study measures the metallicity distribution function (MDF) of the dwarf galaxy Eridanus II (Eri II) in the Local Group. The results show that Eri II has a consistent metallicity with spectroscopic MDFs, and the study identifies extremely metal-poor star candidates. The orbital history of Eri II is also computed, suggesting it is on its first infall into the Milky Way. The study emphasizes the power of HST CaHK imaging for MDF measurements of ultra-faint dwarf galaxies (UFDs).
ASTROPHYSICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Charles D. Kilpatrick, Wen-fai Fong, Peter K. Blanchard, Joel Leja, Anya E. Nugent, Antonella Palmese, Kerry Paterson, Tjitske Starkenburg, Kate D. Alexander, Edo Berger, Ryan Chornock, Aprajita Hajela, Raffaella Margutti
Summary: We present a comprehensive analysis of the binary neutron star merger GW170817 and its optical counterpart AT 2017gfo using the Hubble Space Telescope imaging. Our findings include new detections of the short gamma-ray burst afterglow, consistent with previously observed spectral index. We also analyze the local environment around AT 2017gfo and the host galaxy NGC 4993, ruling out the presence of certain features and identifying shell structures. Our conclusion suggests that the progenitor system of GW170817 is unlikely to have formed during a galaxy merger.
ASTROPHYSICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Oliver Mueller, Patrick R. Durrell, Francine R. Marleau, Pierre-Alain Duc, Sungsoon Lim, Lorenzo Posti, Adriano Agnello, Ruben Sanchez-Janssen, Melina Poulain, Rebecca Habas, Eric Emsellem, Sanjaya Paudel, Remco F. J. van der Burg, Jeremy Fensch
Summary: Ultra-diffuse galaxies (UDGs) are galaxies with very low-surface-brightness and large effective radii, with some studies showing a low dark-matter content. Observations of the UDG MATLAS-2019 in the NGC 5846 group using HST+ACS revealed a high abundance of globular clusters (GCs) and a large dark-matter halo mass, making it one of the most extreme UDGs. Analysis of the turnover of the GC luminosity function (GCLF) indicated a specific frequency of GCs associated with MATLAS-2019 and provided insight into the upper limit of the number of GCs for UDGs.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
Rupert A. C. Croft
Summary: The study explores the potential of using galaxy parallax shifts to measure the Hubble constant, highlighting the need for correcting peculiar motion effects and pushing astrometry into a new regime. Predictions suggest promising results in terms of error reduction for both LSST and NGRST.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Shankar Ray, Joydeep Bagchi, Suraj Dhiwar, M. B. Pandge, Mohammad Mirakhor, Stephen A. Walker, Dipanjan Mukherjee
Summary: This study presents Hubble Space Telescope observations of the hybrid galaxy UGC 12591, revealing its structural components and low star formation rate. The galaxy is in a quiescent state with a supermassive black hole, and a significant deficiency of observable baryonic matter is observed.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Jinhyub Kim, M. James Jee, John P. Hughes, Mijin Yoon, Kim HyeongHan, Felipe Menanteau, Cristobal Sifon, Luke Hovey, Prasiddha Arunachalam
Summary: We present an improved weak-lensing study of the high-z merging galaxy cluster ACT-CL J0102-4915 (El Gordo) based on new wide-field Hubble Space Telescope imaging data. The study confirmed the binary mass structure of the cluster and obtained mass estimates of the subclusters. The updated mass measurement is consistent with the current ACDM cosmology and provides a more direct measurement without extrapolation.
ASTROPHYSICAL JOURNAL
(2021)
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
Zili Shen, Shany Danieli, Pieter van Dokkum, Roberto Abraham, Jean P. Brodie, Charlie Conroy, Andrew E. Dolphin, Aaron J. Romanowsky, J. M. Diederik Kruijssen, Dhruba Dutta Chowdhury
Summary: The distance to NGC 1052-DF2 has been determined to be 22.1+/-1.2 Mpc through 40 orbits of HST ACS data, confirming its proximity to the surface brightness fluctuation distance of the bright elliptical galaxy NGC 1052 and refuting the previous idea that its unusual properties could be explained by a closer distance of 20 Mpc.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Proceedings Paper
Engineering, Aerospace
Denis A. Leahy, Joseph E. Postma, Megan Buick, Cameron Leahy, Traian Craiciu
Summary: The UVIT instrument on AstroSat has conducted a survey of the Andromeda galaxy, providing important insights such as the detection of young stars in the bulge region, the identification of X-ray sources and their correlation with globular clusters, and the characterization of the Andromeda bulge in terms of its structural parameters and star formation history.
SPACE TELESCOPES AND INSTRUMENTATION 2022: ULTRAVIOLET TO GAMMA RAY
(2022)
Article
Astronomy & Astrophysics
Rodrigo Flores-Freitas, Ana L. Chies-Santos, Cristina Furlanetto, Maria Emilia De Rossi, Leonardo Ferreira, Lucas J. Zenocratti, Karla A. Alamo-Martinez
Summary: In this study, relic galaxy analogues were searched for in the TNG50 cosmological simulations, and five potential relic analogues were found. One of the analogues satisfied most observational constraints and showed similarities to the confirmed relic NGC 1277. However, the brightness and density profiles of the analogues were less steep than those of real relic galaxies. Two formation pathways of relic analogues in TNG50 were identified depending on their environment.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Leonardo Ferreira, Christopher J. Conselice, Ulrike Kuchner, Clar-Brid Tohill
Summary: In this study, a machine-learning framework based on a convolutional neural network is developed to distinguish between star-forming galaxies and post-mergers. The framework successfully separates these galaxies with higher accuracy compared to previous methods, and the new measurements provide insights into the formation and evolution of galaxies.
ASTROPHYSICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
E. Merlin, M. Castellano, H. Bretonniere, M. Huertas-Company, U. Kuchner, D. Tuccillo, F. Buitrago, J. R. Peterson, C. J. Conselice, F. Caro, P. Dimauro, L. Nemani, A. Fontana, M. Kuemmel, B. Haussler, W. G. Hartley, A. Alvarez Ayllon, E. Bertin, P. Dubath, F. Ferrari, L. Ferreira, R. Gavazzi, D. Hernandez-Lang, G. Lucatelli, A. S. G. Robotham, M. Schefer, C. Tortora, N. Aghanim, A. Amara, L. Amendola, N. Auricchio, M. Baldi, R. Bender, C. Bodendorf, E. Branchini, M. Brescia, S. Camera, V. Capobianco, C. Carbone, J. Carretero, F. J. Castander, S. Cavuoti, A. Cimatti, R. Cledassou, G. Congedo, L. Conversi, Y. Copin, L. Corcione, F. Courbin, M. Cropper, A. Da Silva, H. Degaudenzi, J. Dinis, M. Douspis, F. Dubath, C. A. J. Duncan, X. Dupac, S. Dusini, S. Farrens, S. Ferriol, M. Frailis, E. Franceschi, P. Franzetti, S. Galeotta, B. Garilli, B. Gillis, C. Giocoli, A. Grazian, F. Grupp, S. V. H. Haugan, H. Hoekstra, W. Holmes, F. Hormuth, A. Hornstrup, P. Hudelot, K. Jahnke, S. Kermiche, A. Kiessling, T. Kitching, R. Kohley, M. Kunz, H. Kurki-Suonio, S. Ligori, P. B. Lilje, I. Lloro, O. Mansutti, O. Marggraf, K. Markovic, F. Marulli, R. Massey, H. J. McCracken, E. Medinaceli, M. Melchior, M. Meneghetti, G. Meylan, M. Moresco, L. Moscardini, E. Munari, S. M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, W. J. Percival, G. Polenta, M. Poncet, L. Popa, L. Pozzetti, F. Raison, R. Rebolo, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, E. Rossetti, R. Saglia, D. Sapone, B. Sartoris, P. Schneider, A. Secroun, G. Seidel, C. Sirignano, G. Sirri, J. Skottfelt, J. -L. Starck, P. Tallada-Crespi, A. N. Taylor, I. Tereno, R. Toledo-Moreo, I. Tutusaus, L. Valenziano, T. Vassallo, Y. Wang, J. Weller, A. Zacchei, G. Zamorani, J. Zoubian, S. Andreon, S. Bardelli, A. Boucaud, C. Colodro-Conde, D. Di Ferdinando, J. Gracia-Carpio, V. Lindholm, N. Mauri, S. Mei, C. Neissner, V. Scottez, A. Tramacere, E. Zucca, C. Baccigalupi, A. Balaguera-Antolinez, M. Ballardini, F. Bernardeau, A. Biviano, S. Borgani, A. S. Borlaff, C. Burigana, R. Cabanac, A. Cappi, C. S. Carvalho, S. Casas, G. Castignani, A. R. Cooray, J. Coupon, H. M. Courtois, O. Cucciati, S. Davini, G. De Lucia, G. Desprez, J. A. Escartin, S. Escoffier, M. Farina, K. Ganga, J. Garcia-Bellido, K. George, G. Gozaliasl, H. Hildebrandt, I. Hook, O. Ilbert, S. Ilic, B. Joachimi, V. Kansal, E. Keihanen, C. C. Kirkpatrick, A. Loureiro, J. Macias-Perez, M. Magliocchetti, G. Mainetti, R. Maoli, S. Marcin, M. Martinelli, N. Martinet, S. Matthew, M. Maturi, R. B. Metcalf, P. Monaco, G. Morgante, S. Nadathur, A. A. Nucita, L. Patrizii, V. Popa, C. Porciani, D. Potter, A. Pourtsidou, M. Pontinen, P. Reimberg, A. G. Sanchez, Z. Sakr, M. Schirmer, M. Sereno, J. Stadel, R. Teyssier, C. Valieri, J. Valiviita, S. E. van Mierlo, A. Veropalumbo, M. Viel, J. R. Weaver, D. Scott
Summary: The Euclid mission of the European Space Agency aims to provide high-quality imaging for 1.5 billion galaxies. A software pipeline is being developed to process and analyze the massive amount of data in real time, including a model-fitting algorithm for important photometric and morphological estimates. The Euclid Morphology Challenge compares five model-fitting software packages on simulated data to identify the best algorithm for implementation.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Adrian M. Price-Whelan, Pey Lian Lim, Nicholas Earl, Nathaniel Starkman, Larry Bradley, David L. Shupe, Aarya A. Patil, Lia Corrales, C. E. Brasseur, Maximilian Noethe, Axel Donath, Erik Tollerud, Brett M. Morris, Adam Ginsburg, Eero Vaher, Benjamin A. Weaver, James Tocknell, William Jamieson, Marten H. van Kerkwijk, Thomas P. Robitaille, Bruce Merry, Matteo Bachetti, H. Moritz Gunther, Thomas L. Aldcroft, Jaime A. Alvarado-Montes, Anne M. Archibald, Attila Bodi, Shreyas Bapat, Geert Barentsen, Juanjo Bazan, Manish Biswas, Mederic Boquien, D. J. Burke, Daria Cara, Mihai Cara, Kyle E. Conroy, Simon Conseil, Matthew W. Craig, Robert M. Cross, Kelle L. Cruz, Francesco D'Eugenio, Nadia Dencheva, Hadrien A. R. Devillepoix, Jorg P. Dietrich, Arthur Davis Eigenbrot, Thomas Erben, Leonardo Ferreira, Daniel Foreman-Mackey, Ryan Fox, Nabil Freij, Suyog Garg, Robel Geda, Lauren Glattly, Yash Gondhalekar, Karl D. Gordon, David Grant, Perry Greenfield, Austen M. Groener, Steve Guest, Sebastian Gurovich, Rasmus Handberg, Akeem Hart, Zac Hatfield-Dodds, Derek Homeier, Griffin Hosseinzadeh, Tim Jenness, Craig K. Jones, Prajwel Joseph, J. Bryce Kalmbach, Emir Karamehmetoglu, Mikolaj Kaluszynski, Michael S. P. Kelley, Nicholas Kern, Wolfgang E. Kerzendorf, Eric W. Koch, Shankar Kulumani, Antony Lee, Chun Ly, Zhiyuan Ma, Conor MacBride, Jakob M. Maljaars, Demitri Muna, N. A. Murphy, Henrik Norman, Richard O'Steen, Kyle A. Oman, Camilla Pacifici, Sergio Pascual, J. Pascual-Granado, Rohit R. Patil, Gabriel Perren, Timothy E. Pickering, Tanuj Rastogi, Benjamin R. Roulston, Daniel F. Ryan, Eli S. Rykoff, Jose Sabater, Parikshit Sakurikar, Jesus Salgado, Aniket Sanghi, Nicholas Saunders, Volodymyr Savchenko, Ludwig Schwardt, Michael Seifert-Eckert, Albert Y. Shih, Anany Shrey Jain, Gyanendra Shukla, Jonathan Sick, Chris Simpson, Sudheesh Singanamalla, Leo P. Singer, Jaladh Singhal, Manodeep Sinha, Brigitta M. Sipocz, Lee R. Spitler, David Stansby, Ole Streicher, Jani Sumak, John D. Swinbank, Dan S. Taranu, Nikita Tewary, Grant R. Tremblay, Miguel De Val-Borro, Zlatan Vasovic, Samuel J. Van Kooten, Shresth Verma, Jose Vinicius de Miranda Cardoso, Peter K. G. Williams, Tom J. Wilson, Benjamin Winkel, W. M. Wood-Vasey, Rui Xue, Peter Yoachim, Chen Zhang, Andrea Zonca
Summary: The Astropy Project is an open-source Python package that provides commonly needed functionality to the astronomical community. Its core package, astropy, serves as the foundation for specialized projects and packages. This article summarizes the key features of the core package and provides updates on the project. It also discusses the connections with astronomical observatories and missions, and the future outlook and challenges of the Astropy Project.
ASTROPHYSICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Leonardo Ferreira, Nathan Adams, Christopher J. Conselice, Elizaveta Sazonova, Duncan Austin, Joseph Caruana, Fabricio Ferrari, Aprajita Verma, James Trussler, Tom Broadhurst, Jose Diego, Brenda L. Frye, Massimo Pascale, Stephen M. Wilkins, Rogier A. Windhorst, Adi Zitrin
Summary: This study presents early results on the morphological and structural properties of galaxies at z > 3 observed with the JWST. The discovery of a higher number of disk galaxies at z > 1.5 compared to the Hubble Space Telescope observations is surprising.
ASTROPHYSICAL JOURNAL LETTERS
(2022)
Article
Astronomy & Astrophysics
Massimo Pascale, Brenda L. Frye, Jose Diego, Lukas J. Furtak, Adi Zitrin, Tom Broadhurst, Christopher J. Conselice, Liang Dai, Leonardo Ferreira, Nathan J. Adams, Patrick Kamieneski, Nicholas Foo, Patrick Kelly, Wenlei Chen, Jeremy Lim, Ashish K. Meena, Stephen M. Wilkins, Rachana Bhatawdekar, Rogier A. Windhorst
Summary: The first deep field images from the James Webb Space Telescope (JWST) reveal new lensed images at uncharted infrared wavelengths, with unprecedented depth and resolution. These images provide opportunities for detailed research on the redshift, chemical abundances, and gas dynamics of distant galaxies. The study also found an Einstein cross candidate and evidence of past dynamical disturbances.
ASTROPHYSICAL JOURNAL LETTERS
(2022)
Article
Astronomy & Astrophysics
Rogier A. Windhorst, Seth H. Cohen, Rolf A. Jansen, Jake Summers, Scott Tompkins, Christopher J. Conselice, Simon P. Driver, Haojing Yan, Dan Coe, Brenda Frye, Norman Grogin, Anton Koekemoer, Madeline A. Marshall, Rosalia O'Brien, Nor Pirzkal, Aaron Robotham, Russell E. Ryan, Christopher N. A. Willmer, Timothy Carleton, Jose M. Diego, William C. Keel, Paolo Porto, Caleb Redshaw, Sydney Scheller, Stephen M. Wilkins, S. P. Willner, Adi Zitrin, Nathan J. Adams, Duncan Austin, Richard G. Arendt, John F. Beacom, Rachana A. Bhatawdekar, Larry D. Bradley, Tom Broadhurst, Cheng Cheng, Francesca Civano, Liang Dai, Herve Dole, Jordan C. J. D'Silva, Kenneth J. Duncan, Giovanni G. Fazio, Giovanni Ferrami, Leonardo Ferreira, Steven L. Finkelstein, Lukas J. Furtak, Hansung B. Gim, Alex Griffiths, Heidi B. Hammel, Kevin C. Harrington, Nimish P. Hathi, Benne W. Holwerda, Rachel Honor, Jia-Sheng Huang, Minhee Hyun, Myungshin Im, Bhavin A. Joshi, Patrick S. Kamieneski, Patrick Kelly, Rebecca L. Larson, Juno Li, Jeremy Lim, Zhiyuan Ma, Peter Maksym, Giorgio Manzoni, Ashish Kumar Meena, Stefanie N. Milam, Mario Nonino, Massimo Pascale, Andreea Petric, Justin D. R. Pierel, Maria del Carmen Polletta, Huub J. A. Roettgering, Michael J. Rutkowski, Ian Smail, Amber N. Straughn, Louis-Gregory Strolger, Andi Swirbul, James A. A. Trussler, Lifan Wang, Brian Welch, J. Stuart B. Wyithe, Min Yun, Erik Zackrisson, Jiashuo Zhang, Xiurui Zhao
Summary: This paper provides an overview and details the rationale, methods, and initial findings of the PEARLS project, which utilizes NIRCam images to survey extragalactic areas. The project aims to study galaxy assembly, AGN growth, and First Light, and is expected to contribute significant insights to the field of astronomy.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
H. Bretonniere, U. Kuchner, M. Huertas-Company, E. Merlin, M. Castellano, D. Tuccillo, F. Buitrago, C. J. Conselice, A. Boucaud, B. Haeussler, M. Kuemmel, W. G. Hartley, A. Alvarez Ayllon, E. Bertin, F. Ferrari, L. Ferreira, R. Gavazzi, D. Hernandez-Lang, G. Lucatelli, A. S. G. Robotham, M. Schefer, L. Wang, R. Cabanac, H. Dominguez Sanchez, P. -A. Duc, S. Fotopoulou, S. Kruk, A. La Marca, B. Margalef-Bentabol, F. R. Marleau, C. Tortora, N. Aghanim, A. Amara, N. Auricchio, R. Azzollini, M. Baldi, R. Bender, C. Bodendorf, E. Branchini, M. Brescia, J. Brinchmann, S. Camera, V. Capobianco, C. Carbone, J. Carretero, F. J. Castander, S. Cavuoti, A. Cimatti, R. Cledassou, G. Congedo, L. Conversi, Y. Copin, L. Corcione, F. Courbin, M. Cropper, A. Da Silva, H. Degaudenzi, J. Dinis, F. Dubath, C. A. J. Duncan, X. Dupac, S. Dusini, S. Farrens, S. Ferriol, M. Frailis, E. Franceschi, M. Fumana, S. Galeotta, B. Garilli, B. Gillis, C. Giocoli, A. Grazian, F. Grupp, S. V. H. Haugan, H. Hoekstra, W. Holmes, F. Hormuth, A. Hornstrup, P. Hudelot, K. Jahnke, S. Kermiche, A. Kiessling, R. Kohley, M. Kunz, H. Kurki-Suonio, S. Ligori, P. B. Lilje, I. Lloro, O. Mansutti, O. Marggraf, K. Markovic, F. Marulli, R. Massey, H. J. McCracken, E. Medinaceli, M. Melchior, M. Meneghetti, G. Meylan, M. Moresco, L. Moscardini, E. Munari, S. M. Niemi, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, W. Percival, V. Pettorino, G. Polenta, M. Poncet, L. Pozzetti, F. Raison, R. Rebolo, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, C. Rosset, E. Rossetti, R. Saglia, D. Sapone, B. Sartoris, P. Schneider, A. Secroun, G. Seidel, C. Sirignano, G. Sirri, J. Skottfelt, J. -L. Starck, P. Tallada-Crespi, A. N. Taylor, I. Tereno, R. Toledo-Moreo, I. Tutusaus, E. A. Valentijn, L. Valenziano, T. Vassallo, Y. Wang, J. Weller, G. Zamorani, J. Zoubian, S. Andreon, S. Bardelli, C. Colodro-Conde, D. Di Ferdinando, J. Gracia-Carpio, V. Lindholm, N. Mauri, S. Mei, V. Scottez, E. Zucca, C. Baccigalupi, M. Ballardini, F. Bernardeau, A. Biviano, S. Borgani, A. S. Borlaff, C. Burigana, A. Cappi, C. S. Carvalho, S. Casas, G. Castignani, A. R. Cooray, J. Coupon, H. M. Courtois, S. Davini, G. De Lucia, G. Desprez, J. A. Escartin, S. Escoffier, M. Fabricius, M. Farina, A. Fontana, K. Ganga, J. Garcia-Bellido, K. George, G. Gozaliasl, H. Hildebrandt, I. Hook, O. Ilbert, S. Ilic, B. Joachimi, V. Kansal, E. Keihanen, C. C. Kirkpatrick, A. Loureiro, J. Macias-Perez, M. Magliocchetti, R. Maoli, S. Marcin, M. Martinelli, N. Martinet, M. Maturi, P. Monaco, G. Morgante, S. Nadathur, A. A. Nucita, L. Patrizii, V. Popa, C. Porciani, D. Potter, A. Pourtsidou, M. Poentinen, P. Reimberg, A. G. Sanchez, Z. Sakr, M. Schirmer, E. Sefusatti, M. Sereno, J. Stadel, R. Teyssier, J. Valiviita, S. E. van Mierlo, A. Veropalumbo, M. Viel, J. R. Weaver, D. Scott
Summary: The surveys conducted by Euclid will serve as a reference for the study of galaxy morphology, providing imaging over an unprecedented area. This paper evaluates the accuracy of parametric galaxy morphology measurements in imaging predicted from within the Euclid Wide Survey. It is concluded that the official Euclid Data Releases will deliver robust structural parameters for at least 400 million galaxies in the Euclid Wide Survey.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Alex Griffiths, Christopher J. Conselice, Leonardo Ferreira, Daniel Ceverino, Pablo G. Perez-Gonzalez, Olga Vega, Daniel Rosa-Gonzalez, Anton M. Koekemoer, Danilo Marchesini, Jose Miguel Rodriguez Espinosa, Lucia Rodriguez-Munoz, Belen Alcalde Pampliega, Elena Terlevich
Summary: We conducted a study on the escape fractions of UV photons from a sample of lensed low-mass emission line-selected galaxies. Our findings suggest that these low-mass galaxies may not be significant sources of reionization, based on the relatively low Lyman-continuum escape fraction limits.
ASTROPHYSICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Cheng Cheng, Jia-Sheng Huang, Ian Smail, Haojing Yan, Seth H. Cohen, Rolf A. Jansen, Rogier A. Windhorst, Zhiyuan Ma, Anton Koekemoer, Christopher N. A. Willmer, S. P. Willner, Jose M. Diego, Brenda Frye, Christopher J. Conselice, Leonardo Ferreira, Andreea Petric, Min Yun, Hansung B. Gim, Maria del Carmen Polletta, Kenneth J. Duncan, Benne W. Holwerda, Huub J. A. Rottgering, Rachel Honor, Nimish P. Hathi, Patrick S. Kamieneski, Nathan J. Adams, Dan Coe, Tom Broadhurst, Jake Summers, Scott Tompkins, Simon P. Driver, Norman A. Grogin, Madeline A. Marshall, Nor Pirzkal, Aaron Robotham, Russell E. Ryan
Summary: We present new observations from the James Webb Space Telescope/NIRCam of (sub)millimeter sources detected by ALMA. We identified their NIRCam counterparts and found that they represent 16 distinct galaxies in three fields. The photometric redshifts and stellar masses of these sources are similar to previously studied submillimeter galaxies. The deep NIRCam data revealed that the majority of these sources are disk-like with little disturbance, suggesting that secular growth may play a role in their assembly.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
T-Y Cheng, H. Dominguez Sanchez, J. Vega-Ferrero, C. J. Conselice, M. Siudek, A. Aragon-Salamanca, M. Bernardi, R. Cooke, L. Ferreira, M. Huertas-Company, J. Krywult, A. Palmese, A. Pieres, A. A. Plazas Malagon, A. Carnero Rosell, D. Gruen, D. Thomas, D. Bacon, D. Brooks, D. J. James, D. L. Hollowood, D. Friedel, E. Suchyta, E. Sanchez, F. Menanteau, F. Paz-Chinchon, G. Gutierrez, G. Tarle, I Sevilla-Noarbe, I Ferrero, J. Annis, J. Frieman, J. Garcia-Bellido, J. Mena-Fernandez, K. Honscheid, K. Kuehn, L. N. da Costa, M. Gatti, M. Raveri, M. E. S. Pereira, M. Rodriguez-Monroy, M. Smith, M. Carrasco Kind, M. Aguena, M. E. C. Swanson, N. Weaverdyck, P. Doel, R. Miquel, R. L. C. Ogando, R. A. Gruendl, S. Allam, S. R. Hinton, S. Dodelson, S. Bocquet, S. Desai, S. Everett, V Scarpine
Summary: This article compares two largest galaxy morphology catalogues, which classify early- and late-type galaxies at intermediate redshift. The catalogues were built using deep learning (CNNs) applied to Dark Energy Survey data. Despite methodological differences, the agreement between the two catalogues is excellent up to i < 19, showing reliable CNN predictions for samples one magnitude fainter than the training sample limit.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
James A. A. Trussler, Nathan J. Adams, Christopher J. Conselice, Leonardo Ferreira, Duncan Austin, Rachana Bhatawdekar, Joseph Caruana, Brenda L. Frye, Tom Harvey, Christopher C. Lovell, Massimo Pascale, William J. Roper, Aprajita Verma, Aswin P. Vijayan, Stephen M. Wilkins
Summary: We analyzed the photometric and spectroscopic properties of four galaxies in the epoch of reionization (EoR) within the SMACS J0723.3-7327 JWST Early Release Observations field. Our findings show that F115W imaging is necessary to differentiate between high equivalent width (EW) [O iii] lambda 5007 emission galaxies at z similar to 8 and Balmer break galaxies at z similar to 10. We also observed that these galaxies exhibit extreme F356W-F444W colors and deviate from the local correlation between emission line ratios, consistent with predictions from high-redshift galaxy simulations.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Leonardo Ferreira, Christopher J. Conselice, Elizaveta Sazonova, Fabricio Ferrari, Joseph Caruana, Clar-Brid Tohill, Geferson Lucatelli, Nathan Adams, Dimitrios Irodotou, Madeline A. Marshall, Will J. Roper, Christopher C. Lovell, Aprajita Verma, Duncan Austin, James Trussler, Stephen M. Wilkins
Summary: This study presents the morphological and structural evolution of 3956 galaxies observed with JWST at 1.5 < z < 6.5. The results show that disk galaxies dominate in the mass range M-* > 10(9)M⊙ up to z = 6, contrary to previous beliefs.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Duncan Austin, Nathan Adams, Christopher J. Conselice, Thomas Harvey, Katherine Ormerod, James Trussler, Qiong Li, Leonardo Ferreira, Pratika Dayal, Ignas Juodzbalis
Summary: This study presents an early analysis of the search for high-redshift galaxies using deep JWST imaging in the NGDEEP field. The data reaches unprecedented depths, allowing for the identification of 16 new galaxies with redshifts greater than 8.5. Additionally, a series of faint, low-mass dwarf galaxies with blue colors and small sizes were discovered.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
Article
Astronomy & Astrophysics
James A. A. Trussler, Christopher J. Conselice, Nathan J. Adams, Roberto Maiolino, Kimihiko Nakajima, Erik Zackrisson, Duncan Austin, Leonardo Ferreira, Tom Harvey
Summary: In this study, theoretical models are used to investigate the potential of observing and identifying Population III galaxies with JWST through deep imaging and spectroscopy. It is found that a combination of NIRCam and MIRI photometry is the most reliable method for identifying potential z = 8 Pop III candidates. The required depths for NIRCam and MIRI photometry to achieve 5 sigma continuum detections of Pop III galaxies at z = 8 are calculated. The prospects of identifying Pop III candidates through slitless and NIRSpec spectroscopic surveys are also discussed, with a focus on the detection of high equivalent width He II lambda 1640 emission.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)