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Št. zadetkov: 4
Possible environmental quenching in an interacting little red dot pair at z ∼ 7
Rosa M. Mérida, Gaia Gaspar, Marcin Sawicki, Gregor Rihtaršič, Roberta Tripodi, Maruša Bradač, Nicholas S. Martis, Vladan Markov
Izvirni znanstveni članek
Oznake: galaxies evolution;active galaxies;high-redshift galaxies;
We report the discovery of a z ∼ 7 group of galaxies that contains two little red dots (LRDs) just 3.3 kpc apart, along with three potential satellite galaxies, as part of the Canadian NIRISS Unbiased Cluster Survey (CANUCS). The spectral energy distributions (SEDs) of this LRD pair show evidence of ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Improving photometric redshifts of epoch of reionization galaxies
Yoshihisa Asada, Guillaume Desprez, Chris J. Willott, Marcin Sawicki, Maruša Bradač, Nicholas S. Martis, Anishya Harshan Thevalil, Vladan Markov
Izvirni znanstveni članek
Oznake: high redshift galaxies;reionization;intergalactic medium;
We present a new analytical model for the attenuation to Epoch of Reionization (EoR) galaxies by proximate neutral hydrogen gas. Many galaxy spectra in the EoR taken by JWST have shown a flux deficit at wavelengths just redward of the Lyman break, and this has been regarded as resulting from Lyα dam ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
CANUCS
Gregor Rihtaršič, Maruša Bradač, Guillaume Desprez, Anishya Harshan Thevalil, Gaël Noirot, Vicente Estrada-Carpenter, Nicholas S. Martis, Vladan Markov, Roberta Tripodi
Izvirni znanstveni članek
Oznake: gravitational lensing;astrophysics of galaxies;high-redshift galaxies;
Context. Strong gravitational lensing in galaxy clusters has become an essential tool in astrophysics, as it allows one to directly probe the dark matter distribution and study magnified background sources. The precision and reliability of strong lensing models rely heavily on the number and quality ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
In search of the first stars
Chris J. Willott, Yoshihisa Asada, Kartheik G. Iyer, Jon Judež, Gregor Rihtaršič, Nicholas S. Martis, Anishya Harshan Thevalil, Giordano Felicioni, Maruša Bradač, Vladan Markov, Roberta Tripodi
Izvirni znanstveni članek
Oznake: Lyman-alpha galaxies;Emission line galaxies;reionization;metallicity;
We present JWST observations of a gravitationally lensed, extremely metal-poor galaxy at redshift z = 8.203 ± 0.001 from the CANUCS survey. Based on the low oxygen to Balmer line ratios, we infer a gas-phase metallicity of 12 + log(O/H) = 6.85 (1.4% solar), making CANUCS-A370-z8-LAE one of the most ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Št. zadetkov: 4
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