Št. zadetkov: 25
Izvirni znanstveni članek
Oznake:
astrofizika;jate galaksij;astrophysics;galaxy clusters;
Deep JWST imaging of the massive galaxy cluster MACS0417.5−1154, at redshift z = 0.443, reveals a huge population of globular clusters (GCs) and ultracompact dwarfs (UCDs) primarily distributed around its single central giant brightest cluster galaxy (BCG). We present Near-Infrared Camera (NIRCam)/s ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
galaksije;nastanek galaksij;razvoj galaksij;porazdelitev izsevov;galaksije z velikim rdečim premikom;galaxies;galaxy formation;galaxy evolution;luminosity function;high-redshift galaxies;
We present a sample of $z_{\mathrm{phot}}\sim 10–16$ galaxies by exploiting some of the richest JWST NIRCam imaging data, taken in the CANUCS survey in Cycle 1 and the Technicolor (TEC) survey in Cycle 2. The combination of the CANUCS+TEC provides multiepoch, deep NIRCam images in all medium bands ( ...
Leto:
2026
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
gravitational lensing;high-redshift galaxies;
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
astrofizika;galaksije v polju;kemična sestava;astrophysics;field galaxies;chemical abundances;
The formation and evolution of galaxies are intricately linked to the baryon cycle, which fuels star formation while shaping chemical abundances within galaxies. Investigating the relationship between star formation and metallicity for large samples of galaxies requires expensive IFU surveys or soph ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
gravitacijsko lečenje;zgodnje vesolje;gravitational lensing;early universe;
The most distant galaxies detected were seen when the Universe was a scant 5% of its
current age. At these times, progenitors of galaxies such as the Milky Way were about
10,000 times less massive. Using the James Webb Space Telescope ( JWST) combined
with magnification from gravitational lensing ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
high-redshift galaxies;gravitational lensing;reionization;active galaxies;
We present galaxy MACS0416-Y1 at z$_{spec}$ = 8.312 as observed by the CAnadian NIRISS Unbiased Cluster Survey. MACS0416-Y1 has been shown to have extreme dust properties; thus, we study the physical properties and star formation histories of its resolved components. Overall, we find that MACS0416-Y ...
Leto:
2024
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
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)
Izvirni znanstveni članek
Oznake:
astrofizika;galaksije z velikim rdečim premikom;medzvezdni prah;fotometrija;astrophysics;high-redshift galaxies;interstellar dust;photometry;
We present a sample of 110 high-redshift (z > 7.5) galaxies from the CANUCS and Technicolor surveys, showcasing photometry in every wide- and medium-band NIRCam filter in addition to ancillary Hubble Space Telescope data sampling 0.4–5 $\mu$m (22 JWST bands out of 29 bands total). Additionally, 47 ( ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
astrofizika;zgodnje vesolje;galaksije;supermasivne črne luknje;astrophysics;early universe;galaxies;supermassive black holes;
Little red dots (LRDs) are a high redshift galaxy population. Despite their high number densities, their nature is still uncertain. Here we present CANUCS-LRD-z8.6, a spectroscopically confirmed little red dot at a spectroscopic redshift of $z_{\mathrm{spec}}=8.6319$, hosting an active galactic nucl ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
astrofizika;galaksije;spektroskopija;aktivna galaktična jedra;astrophysics;galaxies;spectroscopy;active galactic nucleus;
We present a spectroscopic analysis of a broad-line active galactic nucleus (AGN) selected as a little red dot (LRD) at z = 5.3 behind the Bullet cluster (Bz5.3) based on JWST/NIRCam and NIRSpec data. The detection of strong Fe II, O I, and Ca II triplet emission lines, along with the evidence of br ...
Leto:
2025
Vir:
Fakulteta za matematiko in fiziko (UL FMF)