Results 81 to 90 of about 434 (176)
The Astrophysical JournalYoung massive clusters (YMCs) are dense aggregates of young stars and are often speculated as potential precursors to globular clusters. However, the formation mechanism of massive and compact gas clumps that precede YMCs remains unknown.
Ryunosuke Maeda +4 more
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The Astrophysical JournalThe recombination clumping factor, C , is a key parameter in modeling cosmic reionization, but its value is sensitive to the definition of the intergalactic medium (IGM).
Yuri Oku, Renyue Cen
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X-ray emission in IllustrisTNG circum-cluster environments
Astronomy & AstrophysicsContext. An excess of soft X–ray emission (∼0.2 − 1 keV) above the contribution from the hot intracluster medium (ICM) has been detected in a number of galaxy clusters, including the Coma cluster. The physical origin of this emitting medium above the hot
Gouin Celine +11 more
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On the Physical Nature of Lyα Transmission Spikes in High-redshift Quasar Spectra
The Astrophysical JournalWe investigate Lyman-alpha (Ly α ) transmission spikes at 5.2 < z < 6.8 using synthetic quasar spectra from the “Cosmic Reionization on Computers” simulations.
Hanjue Zhu +2 more
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The Astrophysical JournalWe report the spectroscopic detection of neutral gas inflow into a massive ( M _* ≃ 4 × 10 ^10 M _⊙ ) quiescent galaxy observed at z _spec = 2.6576 with the James Webb Space Telescope (JWST).
Davide Bevacqua +18 more
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The Qz5 Survey. I. How the H i Mass Density of the Universe Evolves with Cosmic Time
The Astrophysical JournalWe report that the neutral hydrogen (H i ) mass density of the Universe ( ρ _H _i ) increases with cosmic time since z ∼ 5, peaks at z ∼ 3, and then decreases toward z ∼ 0. This is the first result of Qz5, our spectroscopic survey of 63 quasars at z ≳
Grecco A. Oyarzún +11 more
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Galaxy Proximate Damped Lyα Systems and H I Reionization Topology in Technicolor Dawn
The Astrophysical JournalRecent observations from the James Webb Space Telescope have revealed proximate damped Ly α absorbers (PDLAs) in the foreground of high-redshift galaxies ( z > 5), which have been interpreted as neutral circumgalactic media (CGM).
Maya Steen +3 more
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Considering light-matter interactions in the Friedmann equations. [PDF]
Proc Math Phys Eng Sci, 2022 Vavryčuk V.
europepmc +1 more source
The Astrophysical JournalWe present ^12 CO(1–0) mapping across the entire system of Stephan’s Quintet, a well-known compact galaxy group, observed by Atacama Compact Array (7 m array + Total Power) of the Atacama Large Millimeter/submillimeter Array.
Misaki Yamamoto +12 more
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