Showing 501 - 520 results of 769 for search '"galaxy cluster"', query time: 0.12s Refine Results
  1. 501

    The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements by Patrick L. Kelly, Steven Rodney, Tommaso Treu, Simon Birrer, Vivien Bonvin, Luc Dessart, Ryan J. Foley, Alexei V. Filippenko, Daniel Gilman, Saurabh Jha, Jens Hjorth, Kaisey Mandel, Martin Millon, Justin Pierel, Stephen Thorp, Adi Zitrin, Tom Broadhurst, Wenlei Chen, Jose M. Diego, Alan Dressler, Or Graur, Mathilde Jauzac, Matthew A. Malkan, Curtis McCully, Masamune Oguri, Marc Postman, Kasper Borello Schmidt, Keren Sharon, Brad E. Tucker, Anja von der Linden, Joachim Wambsganss

    Published 2023-01-01
    “…In late 2014, four images of supernova (SN) “Refsdal,” the first known example of a strongly lensed SN with multiple resolved images, were detected in the MACS J1149 galaxy-cluster field. Following the images’ discovery, the SN was predicted to reappear within hundreds of days at a new position ∼8″ away in the field. …”
    Get full text
    Article
  2. 502
  3. 503
  4. 504

    Searching for High-<i>z</i> Radio Galaxies with the MGCLS by Kenda Knowles, Sinah Manaka, Michael F. Bietenholz, William D. Cotton, Matthew Hilton, Konstantinos Kolokythas, S. Ilani Loubser, Nadeem Oozeer

    Published 2021-11-01
    “…We present the results from a search for high-redshift radio galaxy (H<i>z</i>RG) candidates using 1.28 GHz data in the Abell 2751 field drawn from the MeerKAT Galaxy Cluster Legacy Survey (MGCLS). We used the H<i>z</i>RG criteria that a radio source is undetected in all-sky optical and infrared catalogues and that it has a very steep radio spectrum. …”
    Get full text
    Article
  5. 505

    The Mass–Metallicity Relation of Dwarf Galaxies at Cosmic Noon from JWST Observations by Mingyu Li, Zheng Cai, Fuyan Bian, Xiaojing Lin, Zihao Li, Yunjing Wu, Fengwu Sun, Shiwu Zhang, Emmet Golden-Marx, Zechang Sun, Siwei Zou, Xiaohui Fan, Eiichi Egami, Stephane Charlot, Gustavo Bruzual, Jacopo Chevallard

    Published 2023-01-01
    “…We present a study of the mass–metallicity relation (MZR) of 51 dwarf galaxies ( M _⋆ ≈ 10 ^6.5 –10 ^9.5 M _⊙ ) at z = 2–3 from the A2744 and SMACS J0723-3732 galaxy cluster fields. These dwarf galaxies are identified and confirmed by deep JWST/NIRISS imaging and slitless grism spectroscopic observations. …”
    Get full text
    Article
  6. 506

    A Massive Protocluster Anchored by a Luminous Quasar at z = 6.63 by Feige Wang, Jinyi Yang, Joseph F. Hennawi, Xiaohui Fan, Minghao Yue, Eduardo Bañados, Shane Bechtel, Fuyan Bian, Sarah Bosman, Jaclyn B. Champagne, Frederick B. Davies, Roberto Decarli, Emanuele Paolo Farina, Chiara Mazzucchelli, Bram Venemans, Fabian Walter

    Published 2024-01-01
    “…Protoclusters, the progenitors of galaxy clusters, trace large scale structures in the early Universe and are important to our understanding of structure formation and galaxy evolution. …”
    Get full text
    Article
  7. 507

    WISDOM project – VIII. Multiscale feedback cycles in the brightest cluster galaxy NGC 0708 by North, EV, Davis, TA, Cappellari, M, Bureau, M, Gaspari, M, Iguchi, S, Liu, L, Onishi, K, Sarzi, M, Smith, MD, Williams, TG

    Published 2021
    “…&prime;&prime;</span>083 or 25&nbsp;&times;&nbsp;23&thinsp;pc<sup>2</sup>) Atacama Large Millimetre/submillimetre Array&nbsp;<sup>12</sup>CO(2&ndash;1) line and 236&thinsp;GHz continuum observations, as well as 5&thinsp;GHz enhanced Multi-Element Radio Linked Interferometer Network (e-MERLIN) continuum observations, of NGC&thinsp;0708; the brightest galaxy in the low-mass galaxy cluster Abell&thinsp;262. The line observations reveal a turbulent, rotating disc of molecular gas in the core of the galaxy, and a high-velocity, blueshifted feature &asymp;0<span tabindex="0" data-mathml="&lt;math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;&gt;&lt;mrow class=&quot;MJX-TeXAtom-ORD&quot;&gt;&lt;msubsup&gt;&lt;mi&gt;&lt;/mi&gt;&lt;mrow class=&quot;MJX-TeXAtom-ORD&quot;&gt;&lt;mo&gt;.…”
    Journal article
  8. 508
  9. 509

    An Extremely Compact, Low-mass Galaxy on its Way to Quiescence at z = 5.2 by Victoria Strait, Gabriel Brammer, Adam Muzzin, Guillaume Desprez, Yoshihisa Asada, Roberto Abraham, Maruša Bradač, Kartheik G. Iyer, Nicholas Martis, Lamiya Mowla, Gaël Noirot, Ghassan T. E. Sarrouh, Marcin Sawicki, Chris Willott, Katriona Gould, Tess Grindlay, Jasleen Matharu, Gregor Rihtaršič

    Published 2023-01-01
    “…The galaxy, MACS0417-z5BBG, is multiply imaged with magnification factors ∼40 by the galaxy cluster MACS J0417.5-1154, observed as part of the CAnadian NIRISS Unbiased Cluster Survey (CANUCS). …”
    Get full text
    Article
  10. 510
  11. 511

    Untying the Growth Index to Relieve the <i>σ</i><sub>8</sub> Discomfort by Ziad Sakr

    Published 2023-08-01
    “…We then try to constrain all parameters using three probes that span from deep to local redshifts, namely the CMB spectrum, the growth measurements from redshift space distortions <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>f</mi><msub><mi>σ</mi><mn>8</mn></msub></mrow></semantics></math></inline-formula>, and the galaxy cluster counts. We also aim to assess the impact of this relaxation on the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>σ</mi><mn>8</mn></msub></semantics></math></inline-formula> tension between its inferred CMB value in comparison to that obtained from local cluster counts. …”
    Get full text
    Article
  12. 512

    Magellanic System Stars Identified in SMACS J0723.3-7327 James Webb Space Telescope Early Release Observations Images by Jake Summers, Rogier A. Windhorst, Seth H. Cohen, Rolf A. Jansen, Timothy Carleton, Patrick S. Kamieneski, Benne W. Holwerda, Christopher J. Conselice, Nathan J. Adams, Brenda L. Frye, Jose M. Diego, Christopher N. A. Willmer, Rafael Ortiz III, Cheng Cheng, Alex Pigarelli, Aaron Robotham, Jordan C. J. D’Silva, Scott Tompkins, Simon P. Driver, Haojing Yan, Dan Coe, Norman Grogin, Anton M. Koekemoer, Madeline A. Marshall, Nor Pirzkal, Russell E. Ryan Jr.

    Published 2023-01-01
    “…We identify 71 distant stars in James Webb Space Telescope/NIRCam early release observations (ERO) images of the field of galaxy cluster SMACS J0723.3-7327 (SMACS 0723). Given the relatively small (∼10°) angular separation between SMACS 0723 and the Large Magellanic Cloud (LMC), it is likely that these stars are associated with the LMC outskirts or the Leading Arm. …”
    Get full text
    Article
  13. 513
  14. 514

    JWST UNCOVER: Extremely Red and Compact Object at z phot ≃ 7.6 Triply Imaged by A2744 by Lukas J. Furtak, Adi Zitrin, Adèle Plat, Seiji Fujimoto, Bingjie Wang, Erica J. Nelson, Ivo Labbé, Rachel Bezanson, Gabriel B. Brammer, Pieter van Dokkum, Ryan Endsley, Karl Glazebrook, Jenny E. Greene, Joel Leja, Sedona H. Price, Renske Smit, Daniel P. Stark, John R. Weaver, Katherine E. Whitaker, Hakim Atek, Jacopo Chevallard, Emma Curtis-Lake, Pratika Dayal, Anna Feltre, Marijn Franx, Yoshinobu Fudamoto, Danilo Marchesini, Lamiya A. Mowla, Richard Pan, Katherine A. Suess, Alba Vidal-García, Christina C. Williams

    Published 2023-01-01
    “…Recent JWST/NIRCam imaging taken for the ultra-deep UNCOVER program reveals a very red dropout object at z _phot ≃ 7.6, triply imaged by the galaxy cluster A2744 ( z _d = 0.308). All three images are very compact, i.e., unresolved, with a delensed size upper limit of r _e ≲ 35 pc. …”
    Get full text
    Article
  15. 515

    The GLASS-JWST Early Release Science Program. II. Stage I Release of NIRCam Imaging and Catalogs in the Abell 2744 Region by Diego Paris, Emiliano Merlin, Adriano Fontana, Andrea Bonchi, Gabriel Brammer, Matteo Correnti, Tommaso Treu, Kristan Boyett, Antonello Calabrò, Marco Castellano, Wenlei Chen, Lilan Yang, Karl Glazebrook, Patrick Kelly, Anton M. Koekemoer, Nicha Leethochawalit, Sara Mascia, Charlotte Mason, Takahiro Morishita, Mario Nonino, Laura Pentericci, Gianluca Polenta, Guido Roberts-Borsani, Paola Santini, Michele Trenti, Eros Vanzella, Benedetta Vulcani, Rogier A. Windhorst, Themiya Nanayakkara, Xin Wang

    Published 2023-01-01
    “…We present images and a multiwavelength photometric catalog based on all of the JWST NIRCam observations obtained to date in the region of the Abell 2744 galaxy cluster. These data come from three different programs, namely, the GLASS-JWST Early Release Science Program, UNCOVER, and the Director’s Discretionary Time program 2756. …”
    Get full text
    Article
  16. 516

    A SPectroscopic Survey of Biased Halos in the Reionization Era (ASPIRE): JWST Reveals a Filamentary Structure around a z = 6.61 Quasar by Feige Wang, Jinyi Yang, Joseph F. Hennawi, Xiaohui Fan, Fengwu Sun, Jaclyn B. Champagne, Tiago Costa, Melanie Habouzit, Ryan Endsley, Zihao Li, Xiaojing Lin, Romain A. Meyer, Jan–Torge Schindler, Yunjing Wu, Eduardo Bañados, Aaron J. Barth, Aklant K. Bhowmick, Rebekka Bieri, Laura Blecha, Sarah Bosman, Zheng Cai, Luis Colina, Thomas Connor, Frederick B. Davies, Roberto Decarli, Gisella De Rosa, Alyssa B. Drake, Eiichi Egami, Anna-Christina Eilers, Analis E. Evans, Emanuele Paolo Farina, Zoltan Haiman, Linhua Jiang, Xiangyu Jin, Hyunsung D. Jun, Koki Kakiichi, Yana Khusanova, Girish Kulkarni, Mingyu Li, Weizhe Liu, Federica Loiacono, Alessandro Lupi, Chiara Mazzucchelli, Masafusa Onoue, Maria A. Pudoka, Sofía Rojas-Ruiz, Yue Shen, Michael A. Strauss, Wei Leong Tee, Benny Trakhtenbrot, Maxime Trebitsch, Bram Venemans, Marta Volonteri, Fabian Walter, Zhang-Liang Xie, Minghao Yue, Haowen Zhang, Huanian Zhang, Siwei Zou

    Published 2023-01-01
    “…This structure has a 3D galaxy overdensity of δ _gal = 12.6 over 637 cMpc ^3 , one of the most overdense structures known in the early universe, and could eventually evolve into a massive galaxy cluster. Together with existing VLT/MUSE and ALMA observations of this field, our JWST observations reveal that J0305–3150 traces a complex environment where both UV-bright and dusty galaxies are present and indicate that the early evolution of galaxies around the quasar is not simultaneous. …”
    Get full text
    Article
  17. 517
  18. 518
  19. 519

    Galaxy bias in the era of LSST: perturbative bias expansions by Nicola, A, Hadzhiyska, B, Findlay, N, García-García, C, Alonso, D, Slosar, A, Guo, Z, Kokron, N, Angulo, R, Aviles, A, Blazek, J, Dunkley, J, Jain, B, Pellejero, M, Sullivan, J, Walter, CW, Zennaro, M

    Published 2024
    “…We consider a variety of different simulated galaxy samples and test the performance of the bias models in a tomographic joint analysis of LSST-Y10-like galaxy clustering, galaxy-galaxy-lensing and cosmic shear. …”
    Journal article
  20. 520

    The 2dF galaxy redshift survey: Voids and hierarchical scaling models by Croton, D, Colless, M, Gaztañaga, E, Baugh, C, Norberg, P, Baldry, I, Bland-Hawthorn, J, Bridges, T, Cannon, R, Cole, S, Collins, C, Couch, W, Dalton, G, De Propris, R, Driver, S, Efstathiou, G, Ellis, R, Frenk, C, Glazebrook, K, Jackson, C, Lahav, O, Lewis, I, Lumsden, S, Maddox, S, Madgwick, D

    Published 2004
    “…The reduced VPF measured from the 2dFGRS is in excellent agreement with the paradigm of hierarchical scaling of the galaxy clustering moments. The accuracy of our measurement is such that we can rule out, at a very high significance, popular models for galaxy clustering, including the lognormal distribution. …”
    Journal article