Results 41 to 50 of about 108,043 (278)

Fluctuating feedback-regulated escape fraction of ionizing radiation in low-mass, high-redshift galaxies [PDF]

, 2017
Low mass galaxies are thought to provide the bulk of the ionizing radiation necessary to reionize the Universe. The amount of photons escaping the galaxies is poorly constrained theoretically, and difficult to measure observationally.
M. Trebitsch, J. Blaizot, J. Rosdahl, J. Devriendt, A. Slyz   +4 more
semanticscholar   +1 more source

Nearly all the sky is covered by Lyman-α emission around high-redshift galaxies [PDF]

Nature, 2018
Galaxies are surrounded by large reservoirs of gas, mostly hydrogen, that are fed by inflows from the intergalactic medium and by outflows from galactic winds.
L. Wisotzki, R. Bacon, J. Brinchmann, J. Brinchmann, S. Cantalupo, P. Richter, J. Schaye, K. Schmidt, T. Urrutia, P. Weilbacher, M. Akhlaghi, N. Bouché, T. Contini, B. Guiderdoni, E. C. Herenz, H. Inami, J. Kerutt, F. Leclercq, R. Marino, M. Maseda, A. Monreal-Ibero, A. Monreal-Ibero, T. Nanayakkara, J. Richard, R. Saust, M. Steinmetz, M. Wendt   +26 more
semanticscholar   +1 more source

Disk Galaxies at High Redshift? [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractThe successful implementation of integral field near-infrared spectrographs fed by adaptive optics is providing unprecedented views of gas motions within galaxies at redshifts z = 2 − 3, when the universe was forming stars at its peak rate. A complex picture of galaxy kinematics is emerging, with inflows, rotation within sometimes extended and ...
openaire   +1 more source

Are High-redshift Galaxies Hot? Temperature of z > 5 Galaxies and Implications for Their Dust Properties [PDF]

, 2017
Recent studies have found a significant evolution and scatter in the relationship between the UV spectral slope (βUV) and the infrared excess (IRX; LIR/LUV) at z > 4, suggesting different dust properties of these galaxies.
A. Faisst, P. Capak, Lin Yan, R. Pavesi, D. Riechers, I. Barišić, K. Cooke, J. Kartaltepe, D. Masters   +8 more
semanticscholar   +1 more source

Self-consistent proto-globular cluster formation in cosmological simulations of high-redshift galaxies [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We report the formation of bound star clusters in a sample of high-resolution cosmological zoom-in simulations of z ≥ 5 galaxies from the Feedback In Realistic Environments project.
Xiangcheng Ma, M. Grudić, E. Quataert, P. Hopkins, C. Faucher-Giguére, M. Boylan-Kolchin, A. Wetzel, Ji-hoon Kim, N. Murray, D. Keres̆   +9 more
semanticscholar   +1 more source

JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging

The Astrophysical Journal Supplement Series, 2023
JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant Universe. Adding to the new legacy of JWST observations, we present the first NIRCam imaging data release from the JWST ...
Marcia J. Rieke, Brant Robertson, Sandro Tacchella, Kevin Hainline, Benjamin D. Johnson, Ryan Hausen, Zhiyuan Ji, Christopher N. A. Willmer, Daniel J. Eisenstein, Dávid Puskás, Stacey Alberts, Santiago Arribas, William M. Baker, Stefi Baum, Rachana Bhatawdekar, Nina Bonaventura, Kristan Boyett, Andrew J. Bunker, Alex J. Cameron, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Zuyi Chen, Mirko Curti, Emma Curtis-Lake, A. Lola Danhaive, Christa DeCoursey, Alan Dressler, Eiichi Egami, Ryan Endsley, Jakob M. Helton, Raphael E. Hviding, Nimisha Kumari, Tobias J. Looser, Jianwei Lyu, Roberto Maiolino, Michael V. Maseda, Erica J. Nelson, George Rieke, Hans-Walter Rix, Lester Sandles, Aayush Saxena, Katherine Sharpe, Irene Shivaei, Maya Skarbinski, Renske Smit, Daniel P. Stark, Meredith Stone, Katherine A. Suess, Fengwu Sun, Michael Topping, Hannah Übler, Natalia C. Villanueva, Imaan E. B. Wallace, Christina C. Williams, Chris Willott, Lily Whitler, Joris Witstok, Charity Woodrum   +58 more
doaj   +1 more source

The [CII] 158 micron line emission in high-redshift galaxies [PDF]

, 2017
The [CII] fine structure transition at 158 microns is the dominant cooling line of cool interstellar gas, and is the brightest of emission lines from star forming galaxies from FIR through meter wavelengths.
G. Lagache, M. Cousin, M. Chatzikos
semanticscholar   +1 more source

Measuring dynamical masses from gas kinematics in simulated high-redshift galaxies [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Advances in instrumentation have recently extended detailed measurements of gas kinematics to large samples of high-redshift galaxies. Relative to most nearby, thin disc galaxies, in which gas rotation accurately traces the gravitational potential, the
S. Wellons, C. Faucher-Giguére, D. Anglés-Alcázar, C. Hayward, R. Feldmann, P. Hopkins, D. Keres̆   +6 more
semanticscholar   +1 more source

Structural and Morphological Properties of Ultraluminous Infrared Galaxies at 1 < z < 3

Open Astronomy, 2015
Using the Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) near-infrared high-resolution imaging from the 3D-HST survey, we analyze the morphology and structure of 502 ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at 1 < z < 3. Their rest-
Fang Guanwen, Ma Zhongyang, Chen Yang, Kong Xu   +3 more
doaj   +1 more source

Early Results From GLASS-JWST. XII. The Morphology of Galaxies at the Epoch of Reionization

The Astrophysical Journal Letters, 2023
Star-forming galaxies can exhibit strong morphological differences between the rest-frame far-UV and optical, reflecting inhomogeneities in star formation and dust attenuation.
T. Treu, A. Calabrò, M. Castellano, N. Leethochawalit, E. Merlin, A. Fontana, L. Yang, T. Morishita, M. Trenti, A. Dressler, C. Mason, D. Paris, L. Pentericci, G. Roberts-Borsani, B. Vulcani, K. Boyett, M. Bradac, K. Glazebrook, T. Jones, D. Marchesini, S. Mascia, T. Nanayakkara, P. Santini, V. Strait, E. Vanzella, X. Wang   +25 more
doaj   +1 more source