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Aims. We present an extensive catalog of the physical properties of more than a million galaxies within the Dark Energy Spectroscopic Instrument (DESI), one of the largest spectroscopic surveys to date. Spanning over a full variety of…

Photometric redshift (photo-z) is a fundamental parameter for multi-wavelength photometric surveys, while galaxy clusters are important cosmological probers and ideal objects for exploring the dense environmental impact on galaxy evolution.…

Astrophysics of Galaxies · Physics 2022-06-01 Hu Zou , Jipeng Sui , Suijian Xue , Xu Zhou , Jun Ma , Zhimin Zhou , Jundan Nie , Tianmeng Zhang , Lu Feng , Zhixia Shen , Jiali Wang

Strong gravitational lensing by galaxies is a powerful tool for studying cosmology and galaxy structure. The China Space Station Telescope (CSST) will revolutionize this field by discovering up to $\sim$100,000 galaxy-scale strong lenses, a…

Cosmology and Nongalactic Astrophysics · Physics 2025-11-12 Hengyu Wu , Yun Chen , Tonghua Liu , Xiaoyue Cao , Tian Li , Hui Li , Nan Li , Ran Li , Tengpeng Xu

The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the Baryon Acoustic Oscillation technique. The spectra of 35 million galaxies and quasars over 14000 square degrees…

Recent observations by JWST yield a large abundance of luminous galaxies at $z\gtrsim 10$ compared to that expected in the CDM scenario based on extrapolations of the star formation efficiency measured at lower redshifts. While several…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-31 Nicola Menci , Anjan Ananda Sen , Marco Castellano

We describe the derivation and validation of redshift distribution estimates and their uncertainties for the galaxies used as weak lensing sources in the Dark Energy Survey (DES) Year 1 cosmological analyses. The Bayesian Photometric…

Cosmology and Nongalactic Astrophysics · Physics 2018-05-15 B. Hoyle , D. Gruen , G. M. Bernstein , M. M. Rau , J. De Vicente , W. G. Hartley , E. Gaztanaga , J. DeRose , M. A. Troxel , C. Davis , A. Alarcon , N. MacCrann , J. Prat , C. Sánchez , E. Sheldon , R. H. Wechsler , J. Asorey , M. R. Becker , C. Bonnett , A. Carnero Rosell , D. Carollo , M. Carrasco Kind , F. J. Castander , R. Cawthon , C. Chang , M. Childress , T. M. Davis , A. Drlica-Wagner , M. Gatti , K. Glazebrook , J. Gschwend , S. R. Hinton , J. K. Hoormann , A. G. Kim , A. King , K. Kuehn , G. Lewis , C. Lidman , H. Lin , E. Macaulay , M. A. G. Maia , P. Martini , D. Mudd , A. Möller , R. C. Nichol , R. L. C. Ogando , R. P. Rollins , A. Roodman , A. J. Ross , E. Rozo , E. S. Rykoff , S. Samuroff , I. Sevilla-Noarbe , R. Sharp , N. E. Sommer , B. E. Tucker , S. A. Uddin , T. N. Varga , P. Vielzeuf , F. Yuan , B. Zhang , T. M. C. Abbott , F. B. Abdalla , S. Allam , J. Annis , K. Bechtol , A. Benoit-Lévy , E. Bertin , D. Brooks , E. Buckley-Geer , D. L. Burke , M. T. Busha , D. Capozzi , J. Carretero , M. Crocce , C. B. D'Andrea , L. N. da Costa , D. L. DePoy , S. Desai , H. T. Diehl , P. Doel , T. F. Eifler , J. Estrada , A. E. Evrard , E. Fernandez , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , D. W. Gerdes , T. Giannantonio , D. A. Goldstein , R. A. Gruendl , G. Gutierrez , K. Honscheid , D. J. James , M. Jarvis , T. Jeltema , M. W. G. Johnson , M. D. Johnson , D. Kirk , E. Krause , S. Kuhlmann , N. Kuropatkin , O. Lahav , T. S. Li , M. Lima , M. March , J. L. Marshall , P. Melchior , F. Menanteau , R. Miquel , B. Nord , C. R. O'Neill , A. A. Plazas , A. K. Romer , M. Sako , E. Sanchez , B. Santiago , V. Scarpine , R. Schindler , M. Schubnell , M. Smith , R. C. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , D. L. Tucker , V. Vikram , A. R. Walker , J. Weller , W. Wester , R. C. Wolf , B. Yanny , J. Zuntz

The Astro Data Lab is preparing to host large spectroscopic datasets such as a copy of the Dark Energy Spectroscopic Instrument (DESI) survey, which is projected to include approximately 40 million spectra of galaxies and quasars as well as…

A second generation spectrograph for the Keck telescope is under construction at the Lick Observatory shops and will be delivered to Hawaii in 1999. Starting in the Fall of 1999, we shall begin the second phase of the DEEP project: a dense…

Astrophysics · Physics 2007-05-23 Marc Davis , Sandra M. Faber

Brightest Cluster Galaxies (BCGs) are typically massive ellipticals at the centers of clusters. They are believed to experience strong environmental processing, and their mass assembly and star formation history are still debated. We have…

Astrophysics of Galaxies · Physics 2022-11-16 G. Castignani , M. Radovich , F. Combes , P. Salomé , M. Maturi , L. Moscardini , S. Bardelli , C. Giocoli , G. Lesci , F. Marulli , E. Puddu , M. Sereno

We introduce the Baryon Oscillation Spectroscopic Survey (BOSS) Emission-Line Lens Survey (BELLS) for GALaxy-Ly$\alpha$ EmitteR sYstems (BELLS GALLERY) Survey, which is a Hubble Space Telescope program to image a sample of galaxy-scale…

Joint studies of imaging and spectroscopic samples, informed by theory and simulations, offer the potential for comprehensive tests of the cosmological model over redshifts z<1.5. Spectroscopic galaxy samples at these redshifts can be…

Cosmology and Nongalactic Astrophysics · Physics 2022-03-15 Kyle Dawson , Andrew Hearin , Katrin Heitmann , Mustapha Ishak , Johannes Ulf Lange , Martin White , Rongpu Zhou

We present a bright galaxy sample with accurate and precise photometric redshifts (photo-zs), selected using $ugriZYJHK_\mathrm{s}$ photometry from the Kilo-Degree Survey (KiDS) Data Release 4 (DR4). The highly pure and complete dataset is…

Multi-messenger (MM) observations of binary neutron star (BNS) mergers provide a promising approach to trace the distance-redshift relation, crucial for understanding the expansion history of the Universe and, consequently, testing the…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-06 Andrea Cozzumbo , Ulyana Dupletsa , Rodrigo Calderón , Riccardo Murgia , Gor Oganesyan , Marica Branchesi

We use 26 million galaxies from the Dark Energy Survey (DES) Year 1 shape catalogs over 1321 deg$^2$ of the sky to produce the most significant measurement of cosmic shear in a galaxy survey to date. We constrain cosmological parameters in…

Cosmology and Nongalactic Astrophysics · Physics 2018-09-12 M. A. Troxel , N. MacCrann , J. Zuntz , T. F. Eifler , E. Krause , S. Dodelson , D. Gruen , J. Blazek , O. Friedrich , S. Samuroff , J. Prat , L. F. Secco , C. Davis , A. Ferté , J. DeRose , A. Alarcon , A. Amara , E. Baxter , M. R. Becker , G. M. Bernstein , S. L. Bridle , R. Cawthon , C. Chang , A. Choi , J. De Vicente , A. Drlica-Wagner , J. Elvin-Poole , J. Frieman , M. Gatti , W. G. Hartley , K. Honscheid , B. Hoyle , E. M. Huff , D. Huterer , B. Jain , M. Jarvis , T. Kacprzak , D. Kirk , N. Kokron , C. Krawiec , O. Lahav , A. R. Liddle , J. Peacock , M. M. Rau , A. Refregier , R. P. Rollins , E. Rozo , E. S. Rykoff , C. Sánchez , I. Sevilla-Noarbe , E. Sheldon , A. Stebbins , T. N. Varga , P. Vielzeuf , M. Wang , R. H. Wechsler , B. Yanny , T. M. C. Abbott , F. B. Abdalla , S. Allam , J. Annis , K. Bechtol , A. Benoit-Lévy , E. Bertin , D. Brooks , E. Buckley-Geer , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , M. Crocce , C. E. Cunha , C. B. D'Andrea , L. N. da Costa , D. L. DePoy , S. Desai , H. T. Diehl , J. P. Dietrich , P. Doel , E. Fernandez , B. Flaugher , P. Fosalba , J. García-Bellido , E. Gaztanaga , D. W. Gerdes , T. Giannantonio , D. A. Goldstein , R. A. Gruendl , J. Gschwend , G. Gutierrez , D. J. James , T. Jeltema , M. W. G. Johnson , M. D. Johnson , S. Kent , K. Kuehn , S. Kuhlmann , N. Kuropatkin , T. S. Li , M. Lima , H. Lin , M. A. G. Maia , M. March , J. L. Marshall , P. Martini , P. Melchior , F. Menanteau , R. Miquel , J. J. Mohr , E. Neilsen , R. C. Nichol , B. Nord , D. Petravick , A. A. Plazas , A. K. Romer , A. Roodman , M. Sako , E. Sanchez , V. Scarpine , R. Schindler , M. Schubnell , M. Smith , R. C. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , D. L. Tucker , V. Vikram , A. R. Walker , J. Weller , Y. Zhang

The Emission Line Galaxy survey made by the Dark Energy Spectroscopic Instrument (DESI) survey will be created from five passes of the instrument on the sky. On each pass, the constrained mobility of the ends of the fibres in the DESI focal…

Cosmology and Nongalactic Astrophysics · Physics 2018-10-15 Davide Bianchi , Angela Burden , Will J. Percival , David Brooks , Robert N. Cahn , Jaime E. Forero-Romero , Michael Levi , Ashley J. Ross , Gregory Tarle

We present and characterise the galaxy shape catalogue from the first 3 years of Dark Energy Survey (DES) observations, over an effective area of ~4143 deg$^2$ of the southern sky. We describe our data analysis process and our…

Gravitational waves (GWs) have rapidly become important cosmological probes since their first detection in 2015. As the number of detected events continues to rise, upcoming instruments like the Einstein Telescope (ET) and Cosmic Explorer…

Cosmology and Nongalactic Astrophysics · Physics 2024-12-03 Stefano Zazzera , José Fonseca , Tessa Baker , Chris Clarkson

We used the DEIMOS spectrograph on the Keck II Telescope to obtain spectra of galaxies in the fields of five distant, rich galaxy clusters over the redshift range 0.5 < z < 0.9 in a search for luminous, compact, blue galaxies (LCBGs).…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 S. M. Crawford , G. D. Wirth , M. A. Bershady , K. Hon