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The Origin and Evolution of Giant Radio Galaxies [PDF]
Frontiers in Astronomy and Space Sciences, 2022 Giant radio galaxies are arguably the least understood of jetted active galactic nuclei (AGN). We propose that radio galaxies are the product of large mergers that do not involve radio galaxies or radio quasars, such as in merging spiral galaxies, while ...
David Garofalo
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ENVIRONMENT DENSITY OF A GIANT RADIO STRUCTURE FOR GALAXIES AND QUASARS WITH STEEP RADIO SPECTRA [PDF]
Radio Physics and Radio Astronomy, 2021 Purpose: Estimate of the environment density of giant (with the linear size of about megaparsec) radio structures for galaxies and quasars with steep low-frequency spectra taken from the UTR-2 catalogue. Study of the cosmological evolution of environment
A. P. Miroshnichenko
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UV-bright Star-forming Clumps and Their Host Galaxies in UVCANDELS at 0.5 ≤ z ≤ 1
The Astrophysical Journal, 2023 Giant star-forming clumps are a prominent feature of star-forming galaxies (SFGs) and contain important clues on galaxy formation and evolution. However, the basic demographics of clumps and their host galaxies remain uncertain.
Alec Martin +34 more
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Post-AGB Stars as Tracers of AGB Nucleosynthesis: An Update
Universe, 2022 The chemical evolution of galaxies is governed by the chemical yields from stars, and here we focus on the important contributions from asymptotic giant branch (AGB) stars. AGB nucleosynthesis is, however, still riddled with complexities.
Devika Kamath, Hans Van Winckel
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Cosmic ray acceleration to ultrahigh energy in radio galaxies [PDF]
EPJ Web of Conferences, 2019 The origin of ultrahigh energy cosmic rays (UHECRs) is an open question. In this proceeding, we first review the general physical requirements that a source must meet for acceleration to 10-100 EeV, including the consideration that the shock is not ...
Matthews James H. +3 more
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Quenching of Massive Disk Galaxies in the IllustrisTNG Simulation
The Astrophysical Journal, 2022 A rare population of massive disk galaxies have been found to invade the red sequence dominated by early-type galaxies. The formation and origins of these red/quenched massive disk galaxies have recently gained great interest.
Yingzhong Xu +6 more
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The Hβ Index and the Ages of Old Stellar Systems [PDF]
Journal of Astronomy and Space Sciences, 1998 The Hβ and some metal line indices, such as Mg2, Fe52, Fe53 of single-age and single-metallicity populations are computed based on the method of evolutionary population synthesis, with careful consideration of the variation of the horizontal-branch ...
Seok-Jin Yoon +2 more
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UV Visibility of Moderate-Redshift Giant Elliptical Galaxies [PDF]
Journal of Astronomy and Space Sciences, 1998 We show quantitatively whether giant elliptical galaxies would be visible at far UV wavelengths if they were placed at moderate redshift of 0.4-0.5. On the basis of simple cosmological tests, we conclude that giant elliptical galaxies can be detectable ...
Myung-Hyun Rhee +3 more
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The Astrophysical Journal, 2023 We present chemical abundance ratios of 70 star-forming galaxies at z ∼ 4–10 observed by the JWST/NIRSpec Early Release Observations, GLASS, and CEERS programs.
Yuki Isobe +11 more
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Population Synthesis Models for Normal Galaxies with Dusty Disks [PDF]
Journal of Astronomy and Space Sciences, 2003 To investigate the SEDs of galaxies considering the dust extinction processes in the galactic disks, we present the population synthesis models for normal galaxies with dusty disks. We use PEGASE (Fioc & Rocca-Volmerange 1997) to model them with standard
Kyung-Won Suh, Mi-Ryang Kim
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