255 citations · 972 across the 21 of their papers we have counts for
21 papers
Chemical abundances and radial velocities in the extremely metal-poor galaxy DDO 68
F. Annibali, V. La Torre, M. Tosi +9
We present chemical abundances and radial velocities of six HII regions in the extremely metal-poor star-forming dwarf galaxy DDO 68. They are derived from deep spectra in the wave…
LBT/MODS spectroscopy of globular clusters in the irregular galaxy NGC 4449
F. Annibali, E. Morandi, L. L. Watkins +11
We present intermediate-resolution (R1000) spectra in the 3500-10,000 A range of 14 globular clusters in the magellanic irregular galaxy NGC 4449 acquired with the Mult…
The contribution of faint AGNs to the ionizing background at z~4
A. Grazian, E. Giallongo, K. Boutsia +21
Finding the sources responsible for the hydrogen reionization is one of the most pressing issues in cosmology. Bright QSOs are known to ionize their surrounding neighborhood, but t…
PNe and H II regions in the starburst irregular galaxy NGC 4449 from LBT MODS data
F. Annibali, M. Tosi, D. Romano +7
We present deep 350010000 spectra of H II regions and planetary nebulae (PNe) in the starburst irregular galaxy NGC 4449, acquired with the Multi Object Double Spectrograph…
The 2015-2016 outburst of the classical EXor V1118 Ori
T. Giannini, S. Antoniucci, D. Lorenzetti +15
After a quiescence period of about 10 years, the classical EXor source V1118 Ori has undergone an accretion outburst in 2015 September. The maximum brightness (DV > 4 mag) was reac…
Redshift, metallicity and size of two extended dwarf Irregular galaxies. A link between dwarf Irregulars and Ultra Diffuse Galaxies?
M. Bellazzini, V. Belokurov, L. Magrini +5
We present the results of the spectroscopic and photometric follow-up of two field galaxies that were selected as possible stellar counterparts of local high velocity clouds. Our a…