Publications (14)
The mass of our Galaxy from satellite proper motions in the Gaia era
T. K. Fritz, A. Di Cintio, G. Battaglia +2
We use Gaia DR2 systemic proper motions of 45 satellite galaxies to constrain the mass of the Milky Way using the scale free mass estimator of Watkins et al. (2010). We first deter…
An LBT view of the co-rotating group of galaxies around NGC 2750: Deep imaging and new satellite candidates
S. Taibi, M. S. Pawlowski, O. Müller +6
Some galaxies such as the Milky Way and Andromeda display coherently rotating satellite planes, posing tensions with cosmological simulations. NGC 2750 has emerged as an additional…
The stellar metallicity gradients of Local Group dwarf galaxies
S. Taibi, G. Battaglia, R. Leaman +5
Through a homogeneous analysis of spectroscopic literature data of red giant stars, we determine the radial metallicity profiles of 30 dwarf galaxies in the Local Group. We explore…
Gaia early DR3 systemic motions of Local Group dwarf galaxies and orbital properties with a massive Large Magellanic Cloud
G. Battaglia, S. Taibi, G. F. Thomas +1
We perform a comprehensive determination of the systemic proper motions of 74 dwarf galaxies and dwarf galaxy candidates in the Local Group based on Gaia early data release 3. The…
The Tucana dwarf spheroidal galaxy: not such a massive failure after all
S. Taibi, G. Battaglia, M. Rejkuba +5
Isolated Local Group (LG) dwarf galaxies have evolved most or all of their life unaffected by interactions with the large LG spirals and therefore offer the opportunity to learn ab…
A portrait of the Vast Polar Structure as a young phenomenon: hints from its member satellites
S. Taibi, M. S. Pawlowski, S. Khoperskov +2
It has been observed that several Milky Way (MW) satellite dwarf galaxies are distributed along a coherent planar distribution known as the Vast Polar Structure (VPOS). Here we inv…
Variable stars in Local Group Galaxies -- V. The fast and early evolution of the low-mass Eridanus II dSph galaxy
C. E. MartÃnez-Vázquez, M. Monelli, S. Cassisi +18
We present a detailed study of the variable star population of Eridanus II (Eri II), an ultra-faint dwarf galaxy that lies close to the Milky Way virial radius. We analyze multi-ep…
Star Cluster Catalogs for the LEGUS Dwarf Galaxies
D. O. Cook, J. C. Lee, A. Adamo +62
We present the star cluster catalogs for 17 dwarf and irregular galaxies in the Treasury Program "Legacy ExtraGalactic UV Survey" (LEGUS). Cluster identification and photomet…
Stellar chemo-kinematics of the Cetus dwarf spheroidal galaxy
S. Taibi, G. Battaglia, N. Kacharov +6
In order to minimize environmental effects and gain an insight into the internal mechanisms that shape the properties of the early-type dwarf systems, we study one of the few isola…
The Pristine Dwarf Galaxy Survey -- VII. The metallicity distributions of 12 Milky Way faint satellites
S. Taibi, P. Jablonka, N. Longeard +10
Spectroscopic studies of ultra-faint dwarf galaxies are typically limited to small samples of stars due to the scarcity of sufficiently bright targets. The small number statistics…
From gas to stars: MUSEings on the internal evolution of IC 1613
S. Taibi, G. Battaglia, M. M. Roth +9
The kinematics and chemical composition of stellar populations of different ages provide crucial information about the evolution of a galaxy. We aim to provide such information for…
Metallicity profiles of Ultra Diffuse Galaxies in NIHAO simulations
S. Cardona-Barrero, A. Di Cintio, G. Battaglia +2
Supernovae feedback driven expansion has proven to be a viable mechanism to explain the average properties of Ultra Diffuse Galaxies (UDGs) such as the sizes, colors, mass and inte…
Kinematic and metallicity properties od the Aquarius dwarf galaxy from FORS2 MXU spectroscopy
L. Hermosa Muñoz, S. Taibi, G. Battaglia +10
Dwarf galaxies found in isolation in the Local Group (LG) are unlikely to have interacted with the large LG spirals, and therefore environmental effects should not be the main driv…
A Gaia DR 2 and VLT/FLAMES search for new satellites of the LMC
T. K. Fritz, R. Carrera, G. Battaglia +1
A wealth of tiny galaxies populates the surroundings of the Milky Way. Some of these objects might have their origin as former satellites of the Large Magellanic Cloud. Examples of…