9 papers · 1 filter
The Great Escape of ionizing photons during Cosmic Morning
Kanak Saha, Roland Bacon, Anne Verhamme +8
The end of the Cosmic Dark Age marked the onset of reionization, driven by extreme-UV photons from the first galaxies. Direct detection of such photons has remained challenging due…
The origin of extreme N-emitters in star-forming galaxies at z0.5 with DESI DR1
Souradeep Bhattacharya, Chiaki Kobayashi
Extreme nitrogen enhancement relative to oxygen, recently found in very high-redshift galaxies, has been seen in local star-forming galaxies displaying high log(N/O) values ($\geq\…
ChemZz I: Comparing Oxygen and Iron Abundance Patterns in the Milky Way, the Local Group and Cosmic Noon
Stephanie Monty, Allison L. Strom, Thomas M. Stanton +7
Our understanding of the chemical evolution of galaxies has advanced through measurements from both distant galaxies across redshift, and our own Milky Way (MW). To form a comprehe…
Mass-dependent chemical enrichment sequences of SDSS star-forming galaxies out to z~0.3 revealed by direct O & Ar abundances
Souradeep Bhattacharya, Magda Arnaboldi, Chiaki Kobayashi +2
Individual stars in the Milky Way (MW) and its satellites have been shown to trace galaxy stellar mass dependent sequences in the -abundance ([/Fe]) vs metallicity ([Fe/H]) p…
The AstroSat UV Deep Field South. III. Evolution of the UV Luminosity Function and Luminosity Density from z~0.8-0.4
Souradeep Bhattacharya, Kanak Saha
We characterise the rest-frame 1500 Å UV luminosity Function (UVLF) from deep AstroSat/UVIT F154W and N242W imaging in the Great Observatories Origins Survey South (GOODS-S) deep f…
Chemical signature reveals co-spatial dwarf satellite of an edge-on disc galaxy with MUSE
Devang Somawanshi, Souradeep Bhattacharya, Manish Kataria +2
Integral field unit (IFU) spectroscopic observations of resolved galaxies provide an optimal experimental setting for determination of stellar population properties, in particular…