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A New Hubble Space Telescope Distance to NGC 1569: Starburst Properties and IC 342 Group Membership
Aaron J. Grocholski, Alessandra Aloisi, Roeland P. van der Marel +8
We present deep HST ACS/WFC photometry of the dwarf irregular galaxy NGC 1569, one of the closest and strongest nearby starburst galaxies. These data allow us, for the first time,…
Contrasting copper evolution in Omega Centauri and the Milky Way
Donatella Romano, Francesca Matteucci
Despite the many studies on stellar nucleosynthesis published so far, the scenario for the production of Cu in stars remains elusive. In particular, it is still debated whether cop…
Connecting the primordial and Galactic deuterium abundances
Gary Steigman, Donatella Romano, Monica Tosi
The deuterium abundances inferred from observations of the interstellar medium within 1-2 kpc of the Sun range over a factor of three and the corresponding oxygen abundances show a…
The chemical evolution of Omega Centauri's progenitor system
D. Romano, F. Matteucci, M. Tosi +5
Chemical evolution models are presented for the anomalous globular cluster Omega Centauri. After demonstrating that the chemical features of Omega Cen can not be reproduced in the…
Deuterium astration in the local disc and beyond
Donatella Romano, Monica Tosi, Cristina Chiappini +1
(Abridged) Estimates of the interstellar deuterium abundance span a wide range of values. Here we study the evolution of deuterium in the framework of successful models for the che…
Formation and evolution of late-type dwarf galaxies. I. NGC 1705 and NGC 1569
Donatella Romano, Monica Tosi, Francesca Matteucci
(Abridged.) We present one-zone chemical evolution models for two dwarf starburst galaxies, NGC 1705 and NGC 1569. Using information about the past star formation history and initi…