On the Nature of Ultra-faint Dwarf Galaxy Candidates. I. DES1, Eridanus III, and Tucana V
We use deep Gemini/GMOS-S g, r photometry to study the three ultra-faint dwarf galaxy candidates DES1, Eridanus III (Eri III), and Tucana V (Tuc V). Their total luminosities, M V(DES1) = -1.42 ±0.50 and MV(Eri III) = -2.07 ±0.50, and mean metallicities, [Fe/H] = -2.38+0.21-0.19 and [Fe/H] = -2.40+0.19-0.12, are consistent with them being ultra-faint dwarf galaxies, as they fall just outside the 1σ confidence band of the luminosity-metallicity relation for Milky Way satellite galaxies. However,...[Show more]
|Collections||ANU Research Publications|
|Source:||The Astrophysical Journal|
|Access Rights:||Open Access|
|1712.01439.pdf||Author Accepted Manuscript||13.13 MB||Adobe PDF|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.