Results 121 to 130 of about 49,160 (208)

HST Grism Observations of a z ∼ 1.8 Cluster Candidate from the Clusters Occupied by Bent Radio AGN (COBRA) Survey

The Astrophysical Journal
We present new Hubble Space Telescope/Wide Field Camera 3 G141 grism observations for COBRA 1411+3415, originally identified as a high-redshift cluster candidate in the Clusters Occupied by Bent Radio AGN (COBRA) survey using radio, infrared, and optical
Courtney B. Watson, Elizabeth L. Blanton, Emmet Golden-Marx, Matthew L. N. Ashby, Scott W. Randall, J. D. Wing, E. M. Douglass   +6 more
doaj   +1 more source

Galaxy Clusters and Large Scale Structure at High Redshifts

, 1998
We present a detailed study of a rich galaxy cluster at z=2.38. We demonstrate that this cluster contains large overdensities of damped Ly-alpha absorption lines, of Ly-alpha emitting galaxies and of extremely red objects. The overdensity of extremely red objects in this field demonstrates that many are high z galaxies.
Francis, Paul J., Woodgate, Bruce E., Danks, Anthony C.   +2 more
openaire   +2 more sources

Selecting Clusters and Protoclusters via Stellar Mass Density. II. Application to HSC-SSP Observations

The Astrophysical Journal
We present a selection of candidates of clusters and protoclusters of galaxies identified in the photometric data of the HSC-SSP Wide Public Data Release 3 (PDR3), spanning the redshift range 0.1 ≤ z ≤ 2. The selection method, detailed in Vicentin et al.,
Marcelo C. Vicentin, Laerte Sodré Jr., Michael A. Strauss, Erik V. R. de Lima, Pablo Araya-Araya   +4 more
doaj   +1 more source

Is Earendel a Star Cluster?: Metal-poor Globular Cluster Progenitors at z ∼ 6

The Astrophysical Journal Letters
The strongly lensed z  ∼ 6 Sunrise galaxy offers an incredible opportunity to investigate star formation in the early Universe on parsec or smaller scales.
Massimo Pascale, Liang Dai, Brenda L. Frye, Aliza G. Beverage   +3 more
doaj   +1 more source

Efficient Survey Design for Finding High-redshift Galaxies with JWST

The Astrophysical Journal
Several large JWST blank field observing programs have not yet discovered the first galaxies expected to form at 15 ≤ z ≤ 20. This has motivated the search for more effective survey strategies that will be able to effectively probe this redshift range ...
Luka Vujeva, Charles L. Steinhardt, Christian Kragh Jespersen, Brenda L. Frye, Anton M. Koekemoer, Priyamvada Natarajan, Andreas L. Faisst, Pascale Hibon, Lukas J. Furtak, Hakim Atek, Renyue Cen, Albert Sneppen   +11 more
doaj   +1 more source

The JWST Discovery of the Triply Imaged Type Ia “Supernova H0pe” and Observations of the Galaxy Cluster PLCK G165.7+67.0

The Astrophysical Journal
A Type Ia supernova (SN) at z = 1.78 was discovered in James Webb Space Telescope Near Infrared Camera imaging of the galaxy cluster PLCK G165.7+67.0 (G165; z = 0.35).
Brenda L. Frye, Massimo Pascale, Justin Pierel, Wenlei Chen, Nicholas Foo, Reagen Leimbach, Nikhil Garuda, Seth H. Cohen, Patrick S. Kamieneski, Rogier A. Windhorst, Anton M. Koekemoer, Pat Kelly, Jake Summers, Michael Engesser, Daizhong Liu, Lukas J. Furtak, Maria del Carmen Polletta, Kevin C. Harrington, S. P. Willner, Jose M. Diego, Rolf A. Jansen, Dan Coe, Christopher J. Conselice, Liang Dai, Hervé Dole, Jordan C. J. D’Silva, Simon P. Driver, Norman A. Grogin, Madeline A. Marshall, Ashish K. Meena, Mario Nonino, Rafael Ortiz III, Nor Pirzkal, Aaron Robotham, Russell E. Ryan Jr., Lou Strolger, Scott Tompkins, Christopher N. A. Willmer, Haojing Yan, Min S. Yun, Adi Zitrin   +40 more
doaj   +1 more source

Discovery of Diffuse Radio Emission in a Massive z = 1.709 Cool Core Cluster: A Candidate Radio Minihalo

The Astrophysical Journal Letters
Clusters of galaxies host spectacular diffuse radio sources, extending over scales from 100 kpc to several Mpcs. These sources, with extremely faint surface brightness ( μ Jy/arcsec ^2 level), are not tied to individual galaxies but trace synchrotron ...
Julie HLavacek-Larrondo, Roland Timmerman, Christoph Pfrommer, Erik Osinga, Larissa Tevlin, Tracy M. A. Webb, Natalia Martorella, Xiaoyuan Zhang, Reinout van Weeren, Hyunseop Choi, Gabriella Di Gennaro, Marie-Lou Gendron-Marsolais, Carter Rhea   +12 more
doaj   +1 more source

Cluster Candidates with Massive Quiescent Galaxies at z ∼ 2

The Astrophysical Journal
Galaxy clusters are crucial to understanding the role of the environment in galaxy evolution. However, due to their rarity, only a limited number of clusters have been identified at z  ≳ 2. In this paper, we report a discovery of seven cluster candidates
Tomokazu Kiyota, Makoto Ando, Masayuki Tanaka, Alexis Finoguenov, Sadman Shariar Ali, Jean Coupon, Guillaume Desprez, Stephen Gwyn, Marcin Sawicki, Rhythm Shimakawa   +9 more
doaj   +1 more source

The Photometric Analysis of the Environment Around Two Dusty Star-forming Galaxies at z ∼ 2

The Astrophysical Journal
Studying the environments of dusty star-forming galaxies (DSFGs) provides insight into whether these luminous systems are reliable signposts of large-scale overdensities.
Joe Bhangal, Allison W. S. Man, Tom J. L. C. Bakx, Darko Donevski, Pierre Cox, Helmut Dannerbauer, Stephen Serjeant, Masato Hagimoto, Pluto Jiang, Wenxiao Liu   +9 more
doaj   +1 more source

High-Redshift Quasars as Probes of Galaxy and Cluster Formation

, 1999
Invited review, to appear in ``The Hy-Redshift Universe: Galaxy Formation and Evolution at High Redshift'', eds. A.J. Bunker and W.J.M. van Breugel, A.S.P.Conf.Ser. in press (1999).
openaire   +2 more sources