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Imaging of I Zw 18 by JWST. I. Detecting Dusty Stellar Populations

open access: yesThe Astronomical Journal
We present a JWST imaging survey of I Zw 18, the archetypal extremely metal-poor, star-forming (SF), blue compact dwarf galaxy. With an oxygen abundance of only ∼3% Z _⊙ , it is among the lowest-metallicity systems known in the local Universe, and is ...
Alec S. Hirschauer   +19 more
doaj   +1 more source

A Detailed Study of Dwarf Galaxies in the Core of the Coma Cluster [PDF]

open access: yesarXiv
In an earlier paper, we determined the morphological types of galaxies in the Coma Cluster using data from the HST/ACS Coma Cluster treasury survey. We found that of the 132 members, 51 are non dwarfs and 81 are dwarfs. We define dwarfs to have a absolute luminosity $M_{F814W}\geq -18.5$ as in \cite{2012ApJ...746..136M}.
arxiv  

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