Results 111 to 120 of about 90,689 (284)

Probing extreme black‐hole outflows on short timescales via high spectral‐resolution x‐ray imagers

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We investigate outflows and the physics of super‐Eddington versus sub‐Eddington regimes in black hole systems. Our focus is on prospective science using next‐generation high‐resolution soft x‐ray instruments. We highlight the properties of black hole ultraluminous x‐ray source (ULX) systems in particular. Owing to scale invariance in accreting
C. Pinto, J. F. Steiner, A. Bodaghee, P. Chakraborty, M. Sobolewska, D. R. Pasham, A. Ogorzalek, J. Zuhone, A. Bogdan, M. Vogelsberger   +9 more
wiley   +1 more source

Constraining the Redshift Evolution of FIRST Radio Sources in RCS1 Galaxy Clusters

, 2010
We conduct a statistical analysis of the radio source population in galaxy clusters as a function of redshift by matching radio sources from the Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) catalog with 618 optically-selected galaxy ...
Barrientos, L. Felipe, Gladders, Michael D., Gralla, Megan B., Yee, H. K. C.   +3 more
core   +1 more source

The Red Sequence of High-Redshift Clusters: a Comparison with Cosmological Galaxy Formation Models [PDF]

, 2008
We compare the results from a state-of-the-art semianalytic model of galaxy formation with spectrophotometric observations of distant galaxy clusters observed in the range 0.8 ⩽ z⩽ 1.3.
N. Menci
openalex   +2 more sources

GALAXY CLUSTERS SELECTED WITH THE SUNYAEV–ZEL'DOVICH EFFECT FROM 2008 SOUTH POLE TELESCOPE OBSERVATIONS [PDF]

, 2010
We present a detection-significance-limited catalog of 21 Sunyaev–Zel'dovich-selected galaxy clusters. These clusters, along with one unconfirmed candidate, were identified in 178 deg2 of sky surveyed in 2008 by the South Pole Telescope (SPT) to a depth ...
F. W. High, B. Stalder, J. Song, P. Ade, K. Aird, S. Allam, R. Armstrong, W. Barkhouse, B. Benson, B. Benson, E. Bertin, Suman Bhattacharya, L. Bleem, M. Brodwin, E. Buckley-Geer, J. Carlstrom, P. Challis, C. Chang, T. Crawford, A. Crites, T. Haan, S. Desai, M. Dobbs, J. Dudley, R. Foley, E. George, M. Gladders, N. Halverson, M. Hamuy, S. Hansen, G. Holder, W. Holzapfel, J. Hrubeš, M. Joy, R. Keisler, Adrian T. Lee, Adrian T. Lee, E. Leitch, Huan Lin, Yen-Ting Lin, A. Loehr, M. Lueker, D. Marrone, J. McMahon, J. McMahon, J. Mehl, S. Meyer, J. J. Mohr, T. Montroy, N. Morell, C. Ngeow, S. Padin, T. Plagge, T. Plagge, C. Pryke, C. Reichardt, A. Rest, J. Ruel, J. Ruhl, K. Schaffer, L. Shaw, L. Shaw, E. Shirokoff, R. C. Smith, H. Spieler, Z. Staniszewski, A. Stark, C. Stubbs, D. Tucker, K. Vanderlinde, J. Vieira, R. Williamson, W. Wood-Vasey, Y. Yang, O. Zahn, A. Zenteno   +75 more
semanticscholar   +1 more source

Flexible, Photonic Films of Surfactant‐Functionalized Cellulose Nanocrystals for Pressure and Humidity Sensing

Small Structures, Volume 5, Issue 7, July 2024.
Cellulose nanocrystals are abundant, biodegradable nanoparticles that can self‐assemble into a helical stacking that exhibits structural color. By adding a single surfactant, cellulose nanocrystals can be made compatible with apolar solvents, which are widely used for industrial coatings.
Diogo V. Saraiva, Steven N. Remiëns, Ethan I. L. Jull, Ivo R. Vermaire, Lisa Tran   +4 more
wiley   +1 more source

JWST and ALMA Joint Analysis with [O II] λλ3726, 3729, [O III] λ4363, [O III] 88 μm, and [O III] 52 μm: Multizone Evolution of Electron Densities at z ∼ 0–14 and its Impact on Metallicity Measurements

The Astrophysical Journal
We present a JWST and Atacama Large Millimeter/submillimeter Array (ALMA) detailed study of the interstellar medium properties of high-redshift galaxies.
Yuichi Harikane, Ryan L. Sanders, Richard Ellis, Tucker Jones, Masami Ouchi, Nicolas Laporte, Guido Roberts-Borsani, Harley Katz, Kimihiko Nakajima, Yoshiaki Ono, Mansi Gupta   +10 more
doaj   +1 more source

Measuring Galaxy Environments with Deep Redshift Surveys

, 2005
We study the applicability of several galaxy environment measures (n^th-nearest-neighbor distance, counts in an aperture, and Voronoi volume) within deep redshift surveys.
Brian F. Gerke, Darren S. Madgwick, Jeffrey A. Newman, Kauffmann G., Marc Davis, Michael C. Cooper, Renbin Yan   +6 more
core   +1 more source

Chemical Evolution of the Universe and its Consequences for Gravitational‐Wave Astrophysics

Annalen der Physik, Volume 536, Issue 2, February 2024.
Population properties of double compact object mergers (especially binary black holes) are sensitive to the metallicity dependent cosmic star formation history. The uncertainty of this quantity cannot be ignored and makes the interpretation of current gravitational wave observations difficult.
Martyna Chruślińska
wiley   +1 more source

COSMOS2020: Discovery of a Protocluster of Massive Quiescent Galaxies at z = 2.77

The Astrophysical Journal Letters, 2023
Protoclusters of galaxies have been found in the last quarter-century. However, most of them have been found through the overdensity of star-forming galaxies, and there have been no known structures identified by more than two spectroscopically confirmed
Kei Ito, Masayuki Tanaka, Francesco Valentino, Sune Toft, Gabriel Brammer, Katriona M. L. Gould, Olivier Ilbert, Nobunari Kashikawa, Mariko Kubo, Yongming Liang, Henry J. McCracken, John R. Weaver   +11 more
doaj   +1 more source

Do star formation rates of galaxy clusters depend on mass?: blue/late-type fractions, total star formation rates of 115 galaxy clusters as a function of cluster virial mass

, 2004
There has been plenty of observational evidence of cluster galaxy evolution such as the Butcher-Oemler effect and the decrease in S0 fraction with increasing redshift.
Goto, Tomotsugu
core   +1 more source