Results 121 to 130 of about 1,149,467 (210)

COSMOS-Web: Intrinsically Luminous z ≳ 10 Galaxy Candidates Test Early Stellar Mass Assembly

The Astrophysical Journal
We report the discovery of 15 exceptionally luminous 10 ≲ z ≲ 14 candidate galaxies discovered in the first 0.28 deg ^2 of JWST/NIRCam imaging from the COSMOS-Web survey.
Caitlin M. Casey, Hollis B. Akins, Marko Shuntov, Olivier Ilbert, Louise Paquereau, Maximilien Franco, Christopher C. Hayward, Steven L. Finkelstein, Michael Boylan-Kolchin, Brant E. Robertson, Natalie Allen, Malte Brinch, Olivia R. Cooper, Xuheng Ding, Nicole E. Drakos, Andreas L. Faisst, Seiji Fujimoto, Steven Gillman, Santosh Harish, Michaela Hirschmann, Shuowen Jin, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Vasily Kokorev, Daizhong Liu, Arianna S. Long, Georgios Magdis, Claudia Maraston, Crystal L. Martin, Henry Joy McCracken, Jed McKinney, Bahram Mobasher, Jason Rhodes, R. Michael Rich, David B. Sanders, John D. Silverman, Sune Toft, Aswin P. Vijayan, John R. Weaver, Stephen M. Wilkins, Lilan Yang, Jorge A. Zavala   +41 more
doaj   +1 more source

Redshift-space distortions in deep redshift surveys as a probe of the invisible universe

, 2010
Massive redshift surveys of galaxies beyond the local Universe (i.e. z > 0.3) provide an exhaustive probe of the observed acceleration of cosmic expansion.
Guzzo, Luigi, Le Fèvre, Olivier, Olivier Le Fèvre, André Fuözfa, Luigi Guzzo, Jean-Michel Alimi   +5 more
core   +1 more source

A Deep ALMA Survey of the Redshift Distribution of Dusty Star-forming Galaxies

The Astrophysical Journal
We present an Atacama Large Millimeter/submillimeter Array spectroscopic follow-up survey of an 870  μ m selected sample of dusty star-forming galaxies (DSFGs) in the GOODS-S field.
S. J. McKay, A. J. Barger, L. L. Cowie, F. E. Bauer   +3 more
doaj   +1 more source

A Subaru galaxy redshift survey: WFMOS survey

Journal of Physics: Conference Series, 2008
A planned galaxy redshift survey with the Subaru 8.2m telescope, the WFMOS survey, offers a unique opportunity for probing detailed properties of large-scale structure formation in the expanding universe by measuring clustering strength of galaxy distribution as a function of distance scale and redshift.
openaire   +1 more source

Forecasts on the dark energy anisotropic stress for the esa euclid survey [PDF]

The cosmological constant Λ seems to be a not satisfactory explanation of the late-time accelerated expansion of the Universe, for which a number of experimental evidences exist; therefore, it has become necessary in the last years to consider ...
Fogli, Simone
core  

A test for the redshift dependence of $$\sigma _8$$ σ 8 using $$f\sigma _8$$ f σ 8 measurements

European Physical Journal C: Particles and Fields
We search for a redshift dependence of $$\sigma _8^0$$ σ 8 0 using 23 growth rate measurements from redshift space distortions and peculiar velocity measurements as a consistency check of $$\Lambda $$ Λ CDM.
Siddhant Manna, Shantanu Desai
doaj   +1 more source

The statistical lensing of QSOs [PDF]

, 2003
We use the 2dF QSO Redshift Survey, to investigate whether QSOs are detectably gravitationally lensed. Lensing could magnify and distort light from QSOs, influencing QSO numbers near galaxies, which trace structure in our Universe. Following Boyle, Fong &
Myers, Adam David
core  

Simulating High-redshift Galaxies: Enhancing UV Luminosity with Star Formation Efficiency and a Top-heavy IMF

The Astrophysical Journal
Recent findings from photometric and spectroscopic JWST surveys have identified examples of high-redshift galaxies at z  ≳ 10. These high- z galaxies appear to form much earlier and exhibit greater UV luminosity than predicted by theoretical work.
Tae Bong Jeong, Myoungwon Jeon, Hyunmi Song, Volker Bromm   +3 more
doaj   +1 more source

An Information-based Metric for Observing Strategy Optimization, Demonstrated in the Context of Photometric Redshifts for LSST

The Astrophysical Journal Supplement Series
The observing strategy (OS) of an astronomical survey influences the degree to which its resulting data can be used to accomplish any science goal, necessitating upcoming programs, including those on the Rubin and Roman telescopes, to solicit metrics in ...
Alex I. Malz, Francois Lanusse, John Franklin Crenshaw, Bryan Scott, Melissa L. Graham   +4 more
doaj   +1 more source

A Unified Photometric Redshift Calibration for Weak Lensing Surveys Using the Dark Energy Spectroscopic Instrument

The Astrophysical Journal
The effective redshift distribution n ( z ) of galaxies is a critical component in the study of weak gravitational lensing. Here, we introduce a new method for determining n ( z ) for weak lensing surveys based on high-quality redshifts and neural ...
J. U. Lange, D. Blanco, A. Leauthaud, A. H. Wright, A. Fisher, J. Ratajczak, J. Aguilar, S. Ahlen, S. Bailey, D. Bianchi, C. Blake, D. Brooks, T. Claybaugh, A. Cuceu, K. S. Dawson, A. de la Macorra, J. DeRose, Arjun Dey, P. Doel, N. Emas, S. Ferraro, A. Font-Ribera, J. E. Forero-Romero, C. Garcia-Quintero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, S. Heydenreich, H. Hildebrandt, M. Ishak, J. Jimenez, S. Joudaki, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin, O. Lahav, C. Lamman, M. Landriau, L. Le Guillou, M. E. Levi, L. Medina-Varela, A. Meisner, R. Miquel, J. Moustakas, S. Nadathur, J. A. Newman, N. Palanque-Delabrouille, A. Porredon, F. Prada, I. Pérez-Ràfols, G. Rossi, R. Ruggeri, E. Sanchez, C. Saulder, D. Schlegel, M. Schubnell, D. Sprayberry, Z. Sun, G. Tarlé, B. A. Weaver, S. Yuan, P. Zarrouk, H. Zou   +63 more
doaj   +1 more source