Article
Astronomy & Astrophysics
W. G. Hartley, A. Choi, A. Amon, R. A. Gruendl, E. Sheldon, I Harrison, G. M. Bernstein, I Sevilla-Noarbe, B. Yanny, K. Eckert, H. T. Diehl, A. Alarcon, M. Banerji, K. Bechtol, R. Buchs, S. Cantu, C. Conselice, J. Cordero, C. Davis, T. M. Davis, S. Dodelson, A. Drlica-Wagner, S. Everett, A. Ferte, D. Gruen, K. Honscheid, M. Jarvis, M. D. Johnson, N. Kokron, N. MacCrann, J. Myles, A. B. Pace, A. Palmese, F. Paz-Chinchon, M. E. S. Pereira, A. A. Plazas, J. Prat, M. Rodriguez-Monroy, E. S. Rykoff, S. Samuroff, C. Sanchez, L. F. Secco, F. Tarsitano, A. Tong, M. A. Troxel, Z. Vasquez, K. Wang, C. Zhou, T. M. C. Abbott, M. Aguena, S. Allam, J. Annis, D. Bacon, E. Bertin, S. Bhargava, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, M. Costanzi, M. Crocce, L. N. da Costa, J. De Vicente, J. DeRose, S. Desai, J. P. Dietrich, T. F. Eifler, J. Elvin-Poole, I Ferrero, B. Flaugher, P. Fosalba, J. Garcia-Bellido, E. Gaztanaga, D. W. Gerdes, J. Gschwend, G. Gutierrez, S. R. Hinton, D. L. Hollowood, D. Huterer, D. J. James, S. Kent, E. Krause, K. Kuehn, N. Kuropatkin, O. Lahav, H. Lin, M. A. G. Maia, M. March, J. L. Marshall, P. Martini, P. Melchior, F. Menanteau, R. Miquel, J. J. Mohr, R. Morgan, E. Neilsen, R. L. C. Ogando, S. Pandey, A. K. Romer, A. Roodman, M. Sako, E. Sanchez, V Scarpine, S. Serrano, M. Smith, M. Soares-Santos, E. Suchyta, M. E. C. Swanson, G. Tarle, D. Thomas, C. To, T. N. Varga, A. R. Walker, W. Wester, R. D. Wilkinson, J. Zuntz
Summary: The Dark Energy Survey (DES) Deep Fields are a collection of images and associated multiwavelength catalogues built from DECam and VISTA data. The catalogue provides comprehensive coverage of 11 fields and is a valuable resource for cosmology analysis.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Changhua Li, Yanxia Zhang, Chenzhou Cui, Dongwei Fan, Yongheng Zhao, Xue-Bing Wu, Jing-Yi Zhang, Yihan Tao, Jun Han, Yunfei Xu, Shanshan Li, Linying Mi, Boliang He, Zihan Kang, Youfen Wang, Hanxi Yang, Sisi Yang
Summary: The accurate estimation of photometric redshifts is crucial for large survey projects. Template-fitting and machine learning methods are applied, with CATBOOST showing superior performance in our case. By feature selection and parameter optimization, CATBOOST achieves high accuracy with optical and infrared photometric information. However, EAZY provides more accurate photometric redshift estimation for high redshift galaxies. The redshift estimation of all DESI Legacy Imaging Surveys DR9 galaxies with CATBOOST and EAZY contributes to the study of galaxies and their properties.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Simon C-C Ho, Tomotsugu Goto, Nagisa Oi, Seong Jin Kim, Matthew A. Malkan, Agnieszka Pollo, Tetsuya Hashimoto, Yoshiki Toba, Helen K. Kim, Ho Seong Hwang, Hyunjin Shim, Ting-Chi Huang, Eunbin Kim, Ting-Wen Wang, Daryl Joe D. Santos, Hideo Matsuhara
Summary: The AKARI space infrared telescope conducted near to mid-infrared observations in the NEPW field for about a year, but the lack of deep and homogeneous optical data limited the use of nearly half of the IR sources for extragalactic studies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Ben Henghes, Jeyan Thiyagalingam, Connor Pettitt, Tony Hey, Ofer Lahav
Summary: The researchers compared deep learning methods with traditional machine learning algorithms for photometric redshift estimation and introduced a mixed-input model to improve the accuracy of redshift estimation. In the tests, the mixed-input inception CNN outperformed the traditional random forest algorithm, especially at lower redshifts.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
R. Saglia, S. De Nicola, M. Fabricius, V Guglielmo, J. Snigula, R. Zoeller, R. Bender, J. Heidt, D. Masters, D. Stern, S. Paltani, A. Amara, N. Auricchio, M. Baldi, C. Bodendorf, D. Bonino, E. Branchini, M. Brescia, J. Brinchmann, S. Camera, V Capobianco, C. Carbone, J. Carretero, M. Castellano, S. Cavuoti, R. Cledassou, G. Congedo, C. J. Conselice, L. Conversi, Y. Copin, L. Corcione, F. Courbin, M. Cropper, A. Da Silva, H. Degaudenzi, M. Douspis, F. Dubath, C. A. J. Duncan, X. Dupac, S. Dusini, S. Farrens, M. Frailis, E. Franceschi, S. Galeotta, B. Garilli, W. Gillard, B. Gillis, C. Giocoli, A. Grazian, F. Grupp, S. V. H. Haugan, H. Hoekstra, W. Holmes, F. Hormuth, A. Hornstrup, K. Jahnke, M. Kuemmel, S. Kermiche, A. Kiessling, M. Kunz, H. Kurki-Suonio, R. Laureijs, S. Ligori, P. B. Lilje, I Lloro, E. Maiorano, O. Marggraf, K. Markovic, F. Marulli, R. Massey, H. J. McCracken, M. Melchior, G. Meylan, M. Moresco, L. Moscardini, E. Munari, S. M. Niemi, C. Padilla, F. Pasian, K. Pedersen, W. J. Percival, V Pettorino, S. Pires, M. Poncet, L. Popa, L. Pozzetti, F. Raison, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, E. Rossetti, D. Sapone, B. Sartoris, P. Schneider, A. Secroun, G. Seidel, C. Sirignano, G. Sirri, L. Stanco, P. Tallada-Crespi, D. Tavagnacco, A. N. Taylor, I Tereno, R. Toledo-Moreo, F. Torradeflot, I Tutusaus, E. A. Valentijn, L. Valenziano, T. Vassallo, Y. Wang, A. Zacchei, G. Zamorani, J. Zoubian, S. Andreon, S. Bardelli, J. Gracia-Carpio, D. Maino, N. Mauri, A. Tramacere, E. Zucca, A. Alvarez Ayllon, H. Aussel, C. Baccigalupi, A. Balaguera-Antolinez, M. Ballardini, A. Biviano, M. Bolzonella, E. Bozzo, C. Burigana, R. Cabanac, A. Cappi, C. S. Carvalho, S. Casas, G. Castignani, A. Cooray, J. Coupon, H. M. Courtois, S. Davini, G. Desprez, H. Dole, J. A. Escartin, S. Escoffier, M. Farina, S. Fotopoulou, K. Ganga, J. Garcia-Bellido, K. George, F. Giacomini, G. Gozaliasl, H. Hildebrandt, I Hook, O. Ilbert, V Kansal, A. Kashlinsky, E. Keihanen, C. C. Kirkpatrick, A. Loureiro, J. Macias-Perez, M. Magliocchetti, G. Mainetti, R. Maoli, M. Martinelli, N. Martinet, R. B. Metcalf, G. Morgante, S. Nadathur, A. A. Nucita, L. Patrizii, V Popa, Porciani, D. Potter, A. Pourtsidou, P. Reimberg, A. G. Sanchez, Z. Sakr, M. Schirmer, E. Sefusatti, M. Sereno, J. Stadel, R. Teyssier, C. Valieri, J. Valiviita, A. Veropalumbo, M. Viel
Summary: The C3R2 project aims to empirically calibrate the color-redshift relation of galaxies to the Euclid depth through spectroscopic observations of a representative sample. By filling gaps in previous spectroscopic measurements, the project will provide necessary calibration for the Euclid mission.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
Ehsan Kourkchi, R. Brent Tully, Helene M. Courtois, Alexandra Dupuy, Daniel Guinet
Summary: This study uses the correlation between H i linewidths and baryonic mass to obtain distance information for approximately 9984 galaxies. The sample is limited by H i flux and a correction is made to account for selection bias. The absolute scale is established using 64 galaxies with known distances, resulting in a determination of the Hubble constant as H-0 = 75.5 +/- 2.5 km s(-1) Mpc(-1). These findings provide important references for subsequent research.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Gael Noirot, Guillaume Desprez, Yoshihisa Asada, Marcin Sawicki, Vicente Estrada-Carpenter, Nicholas Martis, Ghassan Sarrouh, Victoria Strait, Roberto Abraham, Marusa Bradac, Gabriel Brammer, Kartheik Iyer, Shannon Macfarland, Jasleen Matharu, Lamiya Mowla, Adam Muzzin, Camilla Pacifici, Swara Ravindranath, Chris J. Willott, Loic Albert, Rene Doyon, John B. Hutchings, Neil Rowlands
Summary: This study presents a spectroscopic redshift catalogue of SMACS J0723.3-7327 field, obtained from JWST/NIRISS, JWST/NIRSpec, and VLT/MUSE. The catalogue includes 190 sources with secure spectroscopic redshifts, including 156 new NIRISS grism redshifts. In addition, three prominent galaxy overdensities at higher redshifts have been discovered. The paper provides a description of the sample characteristics and the methodology used to obtain the redshift catalogue. The catalogue is available to the community at https://niriss.github.io/smacs0723.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Hu Zou, Jipeng Sui, Suijian Xue, Xu Zhou, Jun Ma, Zhimin Zhou, Jundan Nie, Tianmeng Zhang, Lu Feng, Zhixia Shen, Jiali Wang
Summary: This study extends the estimation of photometric redshift and detection of galaxy clusters to the latest imaging survey data. The results show that the photometric redshift catalogs contain accurate measurements of photometric redshift and stellar mass for a large number of galaxies, while galaxy clusters are detected using a fast cluster-finding algorithm, resulting in the discovery of hundreds of thousands of clusters with high photometric redshift accuracy.
RESEARCH IN ASTRONOMY AND ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
Z. L. Wen, J. L. Han
Summary: Using photometric data, we estimated photometric redshifts for 105 million galaxies and identified 151,244 clusters of galaxies. We cross-matched these clusters with X-ray and SZ effect catalogues and obtained redshifts for 45 X-ray clusters and 56 SZ clusters. We found that more than 95% of SZ clusters have counterparts in our catalogue and about 15% of SZ clusters have multiple optical clusters in their line of sight.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Sandor Kunsagi-Mate, Robert Beck, Istvan Szapudi, Istvan Csabai
Summary: Three-dimensional wide-field galaxy surveys are crucial for cosmological studies. Photometric methods, particularly machine-learning approaches, are increasingly successful in estimating redshifts for quasars. However, rigorous estimation of reliability is critical due to the dependency on the training set distribution.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
N. Laporte, A. Zitrin, H. Dole, G. Roberts-Borsani, L. J. Furtak, C. Witten
Summary: This study focuses on the investigation of galaxy protoclusters at z>=6 using data from the James Webb Space Telescope. A protocluster with significant mass and several similar galaxies were identified. The findings provide valuable insights into the process of cosmic reionisation.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Astronomy & Astrophysics
A. Humphrey, P. A. C. Cunha, A. Paulino-Afonso, S. Amarantidis, R. Carvajal, J. M. Gomes, I Matute, P. Papaderos
Summary: In the era of huge astronomical surveys, machine learning provides promising solutions for efficient estimation of galaxy properties. The traditional supervised paradigm involves training a model on labeled data and using it to predict labels of unlabelled data. The semi-supervised pseudo-labelling technique offers an alternative by allowing the model to learn from both labelled and unlabelled data. Testing this method on redshift, stellar mass, and star formation rate estimation, significant improvements are obtained compared to purely supervised learning, especially using gradient-boosting tree methods.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Oleksandra Razim, Stefano Cavuoti, Massimo Brescia, Giuseppe Riccio, Mara Salvato, Giuseppe Longo
Summary: The study employs supervised machine learning algorithms and unsupervised self-organizing maps to calculate photometric redshifts for galaxies and assess their reliability. Findings indicate comparable performance to traditional methods within a certain range, with mapping algorithms effectively detecting unreliable data. Data subsets cleaned through the procedures show significantly improved quality.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
G. Dalya, R. Diaz, F. R. Bouchet, Z. Frei, J. Jasche, G. Lavaux, R. Macas, S. Mukherjee, M. Palfi, R. S. de Souza, B. D. Wandelt, M. Bilicki, P. Raffai
Summary: GLADE+ is an extended version of the GLADE galaxy catalogue, designed for multimessenger searches with advanced gravitational-wave detectors. It combines data from six separate astronomical catalogues and provides estimations for redshift corrections and other parameters to assist in determining the likelihood of galaxies being hosts in gravitational wave searches.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Laura D. Baravalle, Maria Victoria Alonso, Dante Minniti, Jose Luis Nilo Castellon, Mario Soto, Carlos Valotto, Carolina Villalon, Dario Grana, Eduardo B. Amores, Fernanda Milla Castro
Summary: This study maps the distribution of galaxies across the Southern Galactic plane using the VISTA Variables in the Via Lactea Survey (VVV), resulting in a catalogue of 5563 visually confirmed galaxies, with 99% being new discoveries. The galaxy density distribution closely resembles the distribution of low interstellar extinction, and the main limitations for detecting background galaxies in the Zone of Avoidance are interstellar extinction and stellar density.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
A. Amon, N. C. Robertson, H. Miyatake, C. Heymans, M. White, J. DeRose, S. Yuan, R. H. Wechsler, T. N. Varga, S. Bocquet, A. Dvornik, S. More, A. J. Ross, H. Hoekstra, A. Alarcon, M. Asgari, J. Blazek, A. Campos, R. Chen, A. Choi, M. Crocce, H. T. Diehl, C. Doux, K. Eckert, J. Elvin-Poole, S. Everett, A. Ferte, M. Gatti, G. Giannini, D. Gruen, R. A. Gruendl, W. G. Hartley, K. Herner, H. Hildebrandt, S. Huang, E. M. Huff, B. Joachimi, S. Lee, N. MacCrann, J. Myles, A. Navarro-Alsina, T. Nishimichi, J. Prat, L. F. Secco, I Sevilla-Noarbe, E. Sheldon, T. Shin, T. Troster, M. A. Troxel, I Tutusaus, A. H. Wright, B. Yin, M. Aguena, S. Allam, J. Annis, D. Bacon, M. Bilicki, D. Brooks, D. L. Burke, A. Carnero Rosell, J. Carretero, F. J. Castander, R. Cawthon, M. Costanzi, L. N. da Costa, M. E. S. Pereira, J. de Jong, J. De Vicente, S. Desai, J. P. Dietrich, P. Doel, I Ferrero, J. Frieman, J. Garcia-Bellido, D. W. Gerdes, J. Gschwend, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, D. Huterer, A. Kannawadi, K. Kuehn, N. Kuropatkin, O. Lahav, M. Lima, M. A. G. Maia, J. L. Marshall, F. Menanteau, R. Miquel, J. J. Mohr, R. Morgan, J. Muir, F. Paz-Chinchon, A. Pieres, A. A. Plazas Malagon, A. Porredon, M. Rodriguez-Monroy, A. Roodman, E. Sanchez, S. Serrano, H. Shan, E. Suchyta, M. E. C. Swanson, G. Tarle, D. Thomas, C. To, Y. Zhang
Summary: We evaluate the consistency between lensing and clustering by combining measurements from Baryon Oscillation Spectroscopic Survey, DES Year 3, HSC Year 1, and KiDS-1000. Good agreement is found between these lensing data sets. Two fixed cosmologies, Planck and Lensing cosmology, are used to fit the data, and both provide an acceptable fit at large scales. However, uncertainties in baryon feedback and assembly bias hinder the full utilization of small-scale measurements.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Rongpu Zhou, Biprateep Dey, Jeffrey A. Newman, Daniel J. Eisenstein, K. Dawson, S. Bailey, A. Berti, J. Guy, Ting-Wen Lan, H. Zou, J. Aguilar, S. Ahlen, Shadab Alam, D. Brooks, A. de la Macorra, A. Dey, G. Dhungana, K. Fanning, A. Font-Ribera, S. Gontcho A. Gontcho, K. Honscheid, Mustapha Ishak, T. Kisner, A. Kovacs, A. Kremin, M. Landriau, Michael E. Levi, C. Magneville, Marc Manera, P. Martini, Aaron M. Meisner, R. Miquel, J. Moustakas, Adam D. Myers, Jundan Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, A. Raichoor, A. J. Ross, E. Schlafly, D. Schlegel, M. Schubnell, Gregory Tarle, B. A. Weaver, R. H. Wechsler, Christophe Yeche, Zhimin Zhou
Summary: The Dark Energy Spectroscopic Instrument (DESI) is conducting a five-year survey to measure the redshifts of tens of millions of galaxies and quasars. The DESI LRG sample, selected using photometry data from the DESI Legacy Imaging Surveys, shows high robustness against imaging systematics. The sample has a higher density compared to previous surveys and has a high success rate in obtaining confident redshifts.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Dritan Kodra, Brett H. Andrews, Jeffrey A. Newman, Steven L. Finkelstein, Adriano Fontana, Nimish Hathi, Mara Salvato, Tommy Wiklind, Stijn Wuyts, Adam Broussard, Nima Chartab, Christopher Conselice, M. C. Cooper, Avishai Dekel, Mark Dickinson, Henry C. Ferguson, Eric Gawiser, Norman A. Grogin, Kartheik Iyer, Jeyhan Kartaltepe, Susan Kassin, Anton M. Koekemoer, David C. Koo, Ray A. Lucas, Kameswara Bharadwaj Mantha, Daniel H. McIntosh, Bahram Mobasher, Camilla Pacifici, Pablo G. Perez-Gonzalez, Paola Santini
Summary: We present the first comprehensive release of photometric redshifts (photo-z's) from the CANDELS team, analyzing biases and errors in the PDFs produced by six groups and correcting for them. We explore different methods of combining the PDFs, and demonstrate that the minimum f-divergence and hierarchical Bayesian methods yield the best results. The resulting photo-z point estimates show low outlier fractions for both spectroscopic and 3D Hubble Space Telescope redshifts.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Ting-Wen Lan, R. Tojeiro, E. Armengaud, J. Xavier Prochaska, T. M. Davis, David M. Alexander, A. Raichoor, Rongpu Zhou, Christophe Yeche, C. Balland, S. BenZvi, A. Berti, R. Canning, A. Carr, H. Chittenden, S. Cole, M. -C. Cousinou, K. Dawson, Biprateep Dey, K. Douglass, A. Edge, S. Escoffier, A. Glanville, S. Gontcho Gontcho, J. Guy, C. Hahn, C. Howlett, Ho Seong Hwang, L. Jiang, A. Kovacs, M. Mezcua, S. Moore, S. Nadathur, M. Oh, D. Parkinson, A. Rocher, A. J. Ross, V. Ruhlmann-Kleider, C. G. Sabiu, K. Said, C. Saulder, D. Sierra-Porta, B. Weiner, J. Yu, P. Zarrouk, Y. Zhang, H. Zou, S. Ahlen, S. Bailey, D. Brooks, A. P. Cooper, A. de la Macorra, A. Dey, G. Dhungana, P. Doel, S. Eftekharzadeh, K. Fanning, A. Font-Ribera, L. Garrison, E. Gaztanaga, R. Kehoe, T. Kisner, A. Kremin, M. Landriau, L. Le Guillou, Michael E. Levi, C. Magneville, Aaron M. Meisner, R. Miquel, J. Moustakas, Adam D. Myers, Jeffrey A. Newman, J. D. Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, M. Schubnell, Gregory Tarle, B. A. Weaver, K. Zhang, Zhimin Zhou
Summary: The Dark Energy Spectroscopic Instrument (DESI) Survey validated its survey design and target selections by obtaining spectroscopic measurements of approximately 2500 bright galaxies, 3500 luminous red galaxies (LRGs), and 10,000 emission-line galaxies (ELGs). The results show that the final survey design produces samples of bright galaxies, LRGs, and ELGs with purity greater than 99%. The precision of the redshift measurements is approximately 10 km/s for bright galaxies and ELGs and approximately 40 km/s for LRGs.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Jorge A. Zavala, Veronique Buat, Caitlin M. Casey, Steven L. Finkelstein, Denis Burgarella, Micaela B. Bagley, Laure Ciesla, Emanuele Daddi, Mark Dickinson, Henry C. Ferguson, Maximilien Franco, E. F. Jimenez-Andrade, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Aurelien Le Bail, E. J. Murphy, Casey Papovich, Sandro Tacchella, Stephen M. Wilkins, Itziar Aretxaga, Peter Behroozi, Jaclyn B. Champagne, Adriano Fontana, Mauro Giavalisco, Andrea Grazian, Norman A. Grogin, Lisa J. Kewley, Dale D. Kocevski, Allison Kirkpatrick, Jennifer M. Lotz, Laura Pentericci, Pablo G. Perez-Gonzalez, Nor Pirzkal, Swara Ravindranath, Rachel S. Somerville, Jonathan R. Trump, Guang Yang, L. Y. Aaron Yung, Omar Almaini, Ricardo O. Amorin, Marianna Annunziatella, Pablo Arrabal Haro, Bren E. Backhaus, Guillermo Barro, Eric F. Bell, Rachana Bhatawdekar, Laura Bisigello, Fernando Buitrago, Antonello Calabro, Marco Castellano, Oscar A. Chavez Ortiz, Katherine Chworowsky, Nikko J. Cleri, Seth H. Cohen, Justin W. Cole, Kevin C. Cooke, M. C. Cooper, Asantha R. Cooray, Luca Costantin, Isabella G. Cox, Darren Croton, Romeel Dave, Alexander de la Vega, Avishai Dekel, David Elbaz, Vicente Estrada-Carpenter, Vital Fernandez, Keely D. Finkelstein, Jonathan Freundlich, Seiji Fujimoto, Angela Garcia-Argumanez, Jonathan P. Gardner, Eric Gawiser, Carlos Gomez-Guijarro, Yuchen Guo, Timothy S. Hamilton, Nimish P. Hathi, Benne W. Holwerda, Michaela Hirschmann, Marc Huertas-Company, Taylor A. Hutchison, Kartheik G. Iyer, Anne E. Jaskot, Saurabh W. Jha, Shardha Jogee, Stephanie Juneau, Intae Jung, Susan A. Kassin, Peter Kurczynski, Rebecca L. Larson, Gene C. K. Leung, Arianna S. Long, Ray A. Lucas, Benjamin Magnelli, Kameswara Bharadwaj Mantha, Jasleen Matharu, Elizabeth J. McGrath, Daniel H. McIntosh, Aubrey Medrano, Emiliano Merlin, Bahram Mobasher, Alexa M. Morales, Jeffrey A. Newman, David C. Nicholls, Viraj Pandya, Marc Rafelski, Kaila Ronayne, Caitlin Rose, Russell E. Ryan, Paola Santini, Lise-Marie Seille, Ekta A. Shah, Lu Shen, Raymond C. Simons, Gregory F. Snyder, Elizabeth R. Stanway, Amber N. Straughn, Harry Teplitz, Brittany N. Vanderhoof, Jesus Vega-Ferrero, Weichen Wang, Benjamin J. Weiner, Christopher N. A. Willmer, Stijn Wuyts
Summary: Lyman-break galaxy (LBG) candidates at z greater than or similar to 10 have been identified in James Webb Space Telescope (JWST)/NIRCam observations. However, we have found that dust-enshrouded star-forming galaxies at lower redshifts may mimic the near-infrared colors of z > 10 LBGs, potentially contaminating LBG candidate samples.
ASTROPHYSICAL JOURNAL LETTERS
(2023)
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
ChangHoon Hahn, Michael J. Wilson, Omar Ruiz-Macias, Shaun Cole, David H. Weinberg, John Moustakas, Anthony Kremin, Jeremy L. Tinker, Alex Smith, Risa H. Wechsler, Steven Ahlen, Shadab Alam, Stephen Bailey, David Brooks, Andrew P. Cooper, Tamara M. Davis, Kyle Dawson, Arjun Dey, Biprateep Dey, Sarah Eftekharzadeh, Daniel J. Eisenstein, Kevin Fanning, Jaime E. Forero-Romero, Carlos S. Frenk, Enrique Gaztanaga, Satya Gontcho Gontcho, Julien Guy, Klaus Honscheid, Mustapha Ishak, Stephanie Juneau, Robert Kehoe, Theodore Kisner, Ting-Wen Lan, Martin Landriau, Laurent Le Guillou, Michael E. Levi, Christophe Magneville, Paul Martini, Aaron Meisner, Adam D. Myers, Jundan Nie, Peder Norberg, Nathalie Palanque-Delabrouille, Will J. Percival, Claire Poppett, Francisco Prada, Anand Raichoor, Ashley J. Ross, Sasha Safonova, Christoph Saulder, Eddie Schlafly, David Schlegel, David Sierra-Porta, Gregory Tarle, Benjamin A. Weaver, Christophe Yeche, Pauline Zarrouk, Rongpu Zhou, Zhimin Zhou, Hu Zou
Summary: In the next 5 years, DESI will conduct the first Stage IV dark energy galaxy survey using 10 spectrographs with 5000 fibers on the 4 m Mayall Telescope. The DESI Bright Galaxy Survey will produce a detailed map of the universe during the dark-energy-dominated epoch, covering a large area with high redshifts. The final target selection and survey design for the BGS have been presented and validated.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
David M. Alexander, Tamara M. Davis, E. Chaussidon, V. A. Fawcett, Alma X. Gonzalez-Morales, Ting-Wen Lan, Christophe Yeche, S. Ahlen, J. N. Aguilar, E. Armengaud, S. Bailey, D. Brooks, Z. Cai, R. Canning, A. Carr, S. Chabanier, Marie-Claude Cousinou, K. Dawson, A. de la Macorra, A. Dey, Biprateep Dey, G. Dhungana, A. C. Edge, S. Eftekharzadeh, K. Fanning, James Farr, A. Font-Ribera, J. Garcia-Bellido, Lehman Garrison, E. Gaztanaga, Satya Gontcho Gontcho, C. Gordon, Stefany Guadalupe Medellin Gonzalez, J. Guy, Hiram K. Herrera-Alcantar, L. Jiang, S. Juneau, N. G. Karacayli, R. Kehoe, T. Kisner, A. Kovacs, M. Landriau, Michael E. Levi, C. Magneville, P. Martini, Aaron M. Meisner, M. Mezcua, R. Miquel, P. Montero Camacho, J. Moustakas, Andrea Munoz-Gutierrez, Adam D. Myers, S. Nadathur, L. Napolitano, J. D. Nie, N. Palanque-Delabrouille, Z. Pan, W. J. Percival, I. Perez-Rafols, C. Poppett, F. Prada, Cesar Ramirez-Perez, C. Ravoux, D. J. Rosario, M. Schubnell, Gregory Tarle, M. Walther, B. Weiner, S. Youles, Zhimin Zhou, H. Zou, Siwei Zou
Summary: A detailed visual inspection of the optical spectroscopic data is crucial for the Dark Energy Spectroscopic Instrument (DESI) survey validation. This paper presents the results of the quasar survey using deep coadded SV spectra, showing that the majority of the main-survey targets are confirmed as quasars. A modified pipeline is introduced to increase the quasar yield by recovering misidentified quasars. Both the standard and modified pipelines achieve high redshift purity and demonstrate good redshift precision and accuracy.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
A. Raichoor, J. Moustakas, Jeffrey A. Newman, T. Karim, S. Ahlen, Shadab Alam, S. Bailey, D. Brooks, K. Dawson, A. de la Macorra, A. de Mattia, A. Dey, Biprateep Dey, G. Dhungana, S. Eftekharzadeh, D. J. Eisenstein, K. Fanning, A. Font-Ribera, J. Garcia-Bellido, E. Gaztanaga, S. Gontcho A. Gontcho, J. Guy, K. Honscheid, M. Ishak, R. Kehoe, T. Kisner, Anthony Kremin, Ting-Wen Lan, M. Landriau, L. Le Guillou, Michael E. Levi, C. Magneville, M. Manera, P. Martini, Aaron M. Meisner, Adam D. Myers, Jundan Nie, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, A. J. Ross, V. Ruhlmann-Kleider, C. G. Sabiu, E. F. Schlafly, D. Schlegel, Gregory Tarle, B. A. Weaver, Christophe Yeche, Rongpu Zhou, Zhimin Zhou, H. Zou
Summary: The Dark Energy Spectroscopic Instrument (DESI) will collect approximately 40 million extragalactic redshifts to precisely constrain cosmic expansion and the growth of structure. It will cover about 80% of cosmic history and one-third of the sky. The Emission Line galaxy (ELG) sample, which comprises one-third of all DESI tracers, will be used to probe the universe within the 0.6 < z < 1.6 range, with the tightest constraints expected in the 1.1 < z < 1.6 range. The target selection for the DESI Survey Validation (SV) and Main Survey ELG samples relies on imaging from the Legacy Surveys.
ASTRONOMICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
S. Radinovic, S. Nadathur, H-A. Winther, W. J. Percival, A. Woodfinden, E. Massara, E. Paillas, S. Contarini, N. Hamaus, A. Kovacs, A. Pisani, G. Verza, M. Aubert, A. Amara, N. Auricchio, M. Baldi, D. Bonino, E. Branchini, M. Brescia, S. Camera, V. Capobianco, C. Carbone, V. F. Cardone, J. Carretero, M. Castellano, S. Cavuoti, A. Cimatti, R. Cledassou, G. Congedo, L. Conversi, Y. Copin, L. Corcione, F. Courbin, A. Da Silva, M. Douspis, F. Dubath, X. Dupac, S. Farrens, S. Ferriol, P. Fosalba, M. Frailis, E. Franceschi, M. Fumana, S. Galeotta, B. Garilli, W. Gillard, B. Gillis, C. Giocoli, A. Grazian, F. Grupp, S. V. H. Haugan, W. Holmes, A. Hornstrup, K. Jahnke, M. Kuemmel, A. Kiessling, M. Kilbinger, T. Kitching, H. Kurki-Suonio, S. Ligori, P. B. Lilje, I. Lloro, E. Maiorano, O. Mansutti, O. Marggraf, K. Markovic, F. Marulli, R. Massey, S. Mei, M. Melchior, Y. Mellier, M. Meneghetti, E. Merlin, G. Meylan, M. Moresco, L. Moscardini, S-M. Niemi, J. W. Nightingale, T. Nutma, C. Padilla, S. Paltani, F. Pasian, K. Pedersen, V. Pettorino, S. Pires, G. Polenta, M. Poncet, L. A. Popa, L. Pozzetti, F. Raison, A. Renzi, J. Rhodes, G. Riccio, E. Romelli, M. Roncarelli, C. Rosset, R. Saglia, D. Sapone, B. Sartoris, P. Schneider, A. Secroun, G. Seidel, S. Serrano, C. Sirignano, G. Sirri, L. Stanco, J-L. Starck, C. Surace, P. Tallada-Crespi, I. Tereno, R. Toledo-Moreo, F. Torradeflot, I. Tutusaus, E. A. Valentijn, L. Valenziano, T. Vassallo, Y. Wang, J. Weller, G. Zamorani, J. Zoubian, V. Scottez
Summary: This study investigates the cosmological constraints that can be obtained from the cross-correlation measurement of cosmic voids identified in the Euclid spectroscopic survey. The study finds that Euclid voids can accurately constrain the ratio of the transverse comoving distance and Hubble distance, as well as the growth rate, with high precision. Moreover, voids alone can provide precise measurements of the matter density parameter and the dark energy equation of state.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Mirko Krumpe, Takamitsu Miyaji, Antonis Georgakakis, Andreas L. Schulze, Alison L. Coil, Tom Dwelly, Damien Coffey, Johan Comparat, Hector Aceves, Mara Salvato, Andrea Merloni, Claudia Maraston, Kirpal R. Nandra, Joel R. P. Brownstein, Donald P. Schneider
Summary: This study investigates the clustering properties of luminous, broad-emission-line active galactic nuclei (AGNs) identified in the ROSAT All-Sky Survey (RASS) and Sloan Digital Sky Survey (SDSS). The cross-correlation function (CCF) between RASS/SDSS AGNs and the SDSS CMASS galaxy sample is measured, and halo occupation distribution (HOD) modeling is applied. The results show that X-ray-selected and optically selected AGNs reside in statistically identical halos, with X-ray AGNs potentially containing a larger population of satellites. The measurements are compared with previous studies at lower redshifts, revealing interesting trends in the typical dark matter halo masses of AGNs.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Brenda L. Frye, Massimo Pascale, Nicholas Foo, Reagen Leimbach, Nikhil Garuda, Paulina Soto Robles, Jake Summers, Carlos Diaz, Patrick Kamieneski, Lukas J. Furtak, Seth H. Cohen, Jose Diego, Benjamin Beauchesne, Rogier A. Windhorst, S. P. Willner, Anton M. Koekemoer, Adi Zitrin, Gabriel Caminha, Karina I. Caputi, Dan Coe, Christopher J. Conselice, Liang Dai, Herve Dole, Simon P. Driver, Norman A. Grogin, Kevin Harrington, Rolf A. Jansen, Jean-Paul Kneib, Matt Lehnert, James Lowenthal, Madeline A. Marshall, Felipe Menanteau, Belen Alcalde Pampliega, Nor Pirzkal, Mari Polletta, Johan Richard, Aaron Robotham, Russell E. Ryan, Michael J. Rutkowski, Christobal Sifon, Scott Tompkins, Daniel Wang, Haojing Yan, Min S. Yun
Summary: The massive galaxy cluster El Gordo (z = 0.87) produces multiple gravitationally lensed arcs that are captured in images taken by James Webb Space Telescope Near-Infrared Camera (NIRCam). By combining data from the Hubble Space Telescope and NIRCam, new photometric redshifts are obtained, and a lens model based on 56 image multiplicities identifies the two main mass components of the cluster. The study also discovers a new member of a previously known galaxy group at z = 4.32.
ASTROPHYSICAL JOURNAL
(2023)
Correction
Astronomy & Astrophysics
Damien Korber, Michele Bianco, Emma Tolley, Jean-Paul Kneib
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
