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Št. zadetkov: 7
Earliest galaxy evolution in the CANUCS+Technicolor fields: galaxy properties at z ∼ 10–16 seen with the full NIRCam medium- and broadband filters
Yoshihisa Asada, Maruša Bradač, Nicholas S. Martis, Giordano Felicioni, Jon Judež
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)
Extreme properties of a compact and massive accreting black hole host in the first 500 Myr
Roberta Tripodi, Nicholas S. Martis, Vladan Markov, Maruša Bradač, Gregor Rihtaršič, Anishya Harshan Thevalil, Jon Judež, Giordano Felicioni
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)
ǂA ǂdeep dive down the broad-line region: permitted O I, Ca II, and Fe II emission in an active galactic nucleus little red dot at z = 5.3
Roberta Tripodi, Maruša Bradač, Nicholas S. Martis, Gregor Rihtaršič, Giordano Felicioni, Anishya Harshan Thevalil, Jon Judež, Vladan Markov
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)
CANUCS/Technicolor: JWST medium-band photometry finds half of the star formation at z > 7.5 is obscured
Nicholas S. Martis, Maruša Bradač, Giordano Felicioni, Anishya Harshan Thevalil, Jon Judež, Vladan Markov, Gregor Rihtaršič, Roberta Tripodi
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)
Star formation under a cosmic microscope: highly magnified z = 11 galaxy behind the bullet cluster
Maruša Bradač, Jon Judež, Gregor Rihtaršič, Nicholas S. Martis, Anishya Harshan Thevalil, Giordano Felicioni, Vladan Markov, Roberta Tripodi
Izvirni znanstveni članek
Oznake: galaksije;gravitacijsko lečenje;spektroskopija;fotometrija;galaxies;gravitational lensing;spectroscopy;photometry;
We present measurements of stellar population properties of a newly discovered, spectroscopically confirmed, $z=11.10^{+0.11}_{-0.26}$, gravitationally lensed galaxy, using JWST NIRSpec PRISM spectroscopy and NIRCam imaging. The arc is highly magnified by the Bullet Cluster (magnification factor $\m ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
CANUCS/Technicolor data release 1: imaging, photometry, slit spectroscopy, and stellar population parameters
Ghassan T. E. Sarrouh, Nicholas S. Martis, Gregor Rihtaršič, Maruša Bradač, Giordano Felicioni, Anishya Harshan Thevalil, Jon Judež, Vladan Markov, Roberta Tripodi
Izvirni znanstveni članek
Oznake: razvoj galaksij;pregledi neba;fotometrija;spektroskopija;jate galaksij;galaxy evolution;sky surveys;photometry;spectroscopy;galaxy clusters;
We present the first data release of the Canadian NIRISS Unbiased Cluster Survey (CANUCS), a JWST Cycle 1 GTO program targeting five lensing clusters and flanking fields in parallel (A370, MACS0416, MACS0417, MACS1149, and MACS1423; survey area ∼100 arcmin$^2$), with NIRCam imaging, NIRISS slitless ...
Leto: 2026 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: 7
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