4 papers
Confirming membership in Local Group galaxies with the Dark Energy Spectroscopic Instrument Data Release 1
Federico Sestito, Chiaki Kobayashi
We use the Dark Energy Spectroscopic Instrument Data Release 1 (DESI DR1) to identify stellar members of the Local Group dwarf galaxies. We cross-match DESI targets with candidate…
Tracing nitrogen enrichment across cosmic time with JWST
E. Cataldi, F. Belfiore, M. Curti +22
We present a comprehensive analysis of the nitrogen-to-oxygen (N/O) abundance ratio in a sample of ~ 660 star-forming galaxies at redshift z ~ 1-6, with a median redshift of z = 3.…
MARTA: Temperature-temperature relationships and strong-line metallicity calibrations from multiple auroral-line detections at cosmic noon
E. Cataldi, F. Belfiore, M. Curti +22
We present the first results from MARTA (Measuring Abundances at high Redshift with the T Approach), a programme leveraging ultra-deep, medium-resolution JWST/NIRSpec spectrosc…
The JWST EXCELS survey: direct estimates of C, N, and O abundances in two relatively metal-rich galaxies at
K. Z. Arellano-Córdova, F. Cullen, A. C. Carnall +14
We present a spectroscopic analysis of two star-forming galaxies at observed with JWST/NIRSpec as part of the EXCELS survey. The detection of the CIII]~1906,09, [O…