Results 11 to 20 of about 5,210 (169)

Relative Distances and Peculiar Velocities of 140 Groups and Clusters of Galaxies at Low Redshifts: the Hubble Diagram

Astronomy Reports
10 pages, 5 figures.
A I Kopylov, F G Kopylova
exaly   +3 more sources

Redshifts and distances

Nature, 1979
Geoffrey Burbidge
exaly   +2 more sources

Identification and properties of intense star-forming galaxies at redshifts z > 10 [PDF]

Nature Astronomy, 2022
The JWST Advanced Deep Extragalactic Survey using NIRCam to find the earliest galaxies reveals the size and star formation rates of four extreme redshift ( z  > 10) galaxies of the distant Universe. Surveys with the James Webb Space Telescope (JWST) have
B. Robertson, S. Tacchella, B. Johnson, K. Hainline, L. Whitler, D. Eisenstein, R. Endsley, M. Rieke, D. Stark, S. Alberts, A. Dressler, E. Egami, R. Hausen, G. Rieke, I. Shivaei, C. Williams, C. Willmer, S. Arribas, N. Bonaventura, A. Bunker, A. Cameron, S. Carniani, S. Charlot, J. Chevallard, M. Curti, E. Curtis-Lake, F. D'Eugenio, P. Jakobsen, T. Looser, N. Lützgendorf, R. Maiolino, M. Maseda, T. Rawle, H. Rix, R. Smit, H. Übler, C. Willott, J. Witstok, S. Baum, R. Bhatawdekar, K. Boyett, Z. Chen, A. Graaff, M. Florian, J. Helton, R. Hviding, Z. Ji, N. Kumari, J. Lyu, E. Nelson, L. Sandles, A. Saxena, K. Suess, F. Sun, M. Topping, I. E. B. Wallace   +55 more
semanticscholar   +1 more source

Confirmation and refutation of very luminous galaxies in the early Universe [PDF]

Nature, 2023
During the first 500 million years of cosmic history, the first stars and galaxies formed, seeding the Universe with heavy elements and eventually reionizing the intergalactic medium^ 1 – 3 .
Pablo Arrabal Haro, M. Dickinson, S. Finkelstein, J. Kartaltepe, C. Donnan, D. Burgarella, A. Carnall, F. Cullen, J. Dunlop, V. Fern'andez, S. Fujimoto, I. Jung, M. Krips, R. Larson, C. Papovich, P. Pérez-González, R. Amorín, M. Bagley, V. Buat, C. Casey, Katherine Chworowsky, S. Cohen, H. Ferguson, M. Giavalisco, M. Huertas-Company, T. Hutchison, D. Kocevski, A. Koekemoer, R. Lucas, D. McLeod, R. McLure, N. Pirzkal, L. Seillé, J. Trump, B. Weiner, S. Wilkins, J. Zavala   +36 more
semanticscholar   +1 more source

Spectral Templates Optimal for Selecting Galaxies at z > 8 with the JWST [PDF]

Astrophysical Journal, 2022
The selection of high-redshift galaxies often involves spectral energy distribution (SED) fitting to photometric data, an expectation for contamination levels, and measurement of sample completeness—all vetted through comparison to spectroscopic redshift
R. Larson, T. Hutchison, Micaela B. Bagley, S. Finkelstein, L. Y. Aaron Yung, R. Somerville, M. Hirschmann, G. Brammer, B. Holwerda, C. Papovich, A. Morales, S. Wilkins   +11 more
semanticscholar   +1 more source

Systematically Measuring Ultra-diffuse Galaxies (SMUDGes). III. The Southern SMUDGes Catalog [PDF]

Astrophysical Journal Supplement Series, 2022
We present a catalog of 5598 ultra-diffuse galaxy (UDG) candidates with effective radius r e > 5.″3 distributed throughout the southern portion of the DESI Legacy Imaging Survey covering ∼15,000 deg2.
D. Zaritsky, R. Donnerstein, A. Karunakaran, C. E. Barbosa, A. Dey, J. Kadowaki, K. Spekkens, Hua-Nian Zhang   +7 more
semanticscholar   +1 more source

Can Cosmological Simulations Reproduce the Spectroscopically Confirmed Galaxies Seen at z ≥ 10? [PDF]

Astrophysical Journal Letters, 2022
Recent photometric detections of extreme (z > 10) redshift galaxies from the JWST have been shown to be in strong tension with existing simulation models for galaxy formation and in the most acute case, in tension with ΛCDM itself. These results, however,
B. Keller, F. Munshi, M. Trebitsch, M. Tremmel   +3 more
semanticscholar   +1 more source

JWST's PEARLS: A new lens model for ACT-CL J0102-4915, "El Gordo," and the first red supergiant star at cosmological distances discovered by JWST [PDF]

Astronomy & Astrophysics, 2022
The first JWST data on the massive colliding cluster El Gordo confirm 23 known families of multiply lensed images and identify 8 new members of these families.
J. Diego, A. Meena, N. Adams, T. Broadhurst, Liang Dai, D. Coe, B. Frye, P. Kelly, A. Koekemoer, M. Pascale, S. Willner, E. Zackrisson, A. Zitrin, R. Windhorst, S. Cohen, R. Jansen, J. Summers, S. Tompkins, C. Conselice, S. Driver, Haojing Yan, N. Grogin, M. Marshall, N. Pirzkal, A. Robotham, R. Ryan, Jr., C. Willmer, L. Bradley, G. Caminha, K. Caputi   +30 more
semanticscholar   +1 more source

Redshift-Distance Survey of Early-Type Galaxies: Circular-Aperture Photometry [PDF]

The Astronomical Journal, 2003
51 pages, 12 figures, 6 tables, including full table6 (in http://webast.ast.obs-mip.fr/people/vicky/tables/) Accepted by AJ (scheduled for May 2003)
Alonso, M. V., Bernardi, M., da Costa, L. N., Wegner, G., Willmer, C. N. A., Pellegrini, P. S., Maia, M. A. G.   +6 more
openaire   +5 more sources

Clustering of LRGs in the DECaLS DR8 Footprint: Distance Constraints from Baryon Acoustic Oscillations Using Photometric Redshifts [PDF]

Astrophysical Journal, 2020
A photometric redshift sample of luminous red galaxies (LRGs) obtained from the DECam Legacy Survey (DECaLS) is analyzed to probe cosmic distances by exploiting the wedge approach of the two-point correlation function.
Srivatsan Sridhar, Yong Song, A. Ross, R. Zhou, J. Newman, C. Chuang, R. Blum, E. Gaztañaga, M. Landriau, F. Prada   +9 more
semanticscholar   +1 more source