526 citations · 6.5k across the 150 of their papers we have counts for
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Age Determination of Six Intermediate-age SMC Star Clusters with HST/ACS
Katharina Glatt, Eva K. Grebel, Elena Sabbi +9
We present a photometric analysis of the star clusters Lindsay 1, Kron 3, NGC339, NGC416, Lindsay 38, and NGC419 in the Small Magellanic Cloud (SMC), observed with the Hubble Space…
Variable stars in the Fornax dSph Galaxy. II. Pulsating stars below the horizontal branch
Ennio Poretti, Gisella Clementini, Enrico V. Held +6
We have carried out an intensive survey of the northern region of the Fornax dwarf spheroidal galaxy with the aim of detecting the galaxy's short--period pulsating stars (P<0.25 da…
Detection of new variable stars in the SMC cluster NGC 121
G. Fiorentino, R. Contreras, G. Clementini +5
New candidate variable stars have been identified in the Small Magellanic Cloud cluster NGC121, by applying both the image subtraction technique (ISIS, Alard 2000) and the Welch &…
An Accurate Age Determination for the SMC Star Cluster NGC121 with HST/ACS
K. Glatt, J. S. Gallagher, E. K. Grebel +8
As first Paper of a series devoted to study the old stellar population in clusters and fields in the Small Magellanic Cloud, we present deep observations of NGC121 in the F555W and…
On the newly discovered Canes Venatici II dSph galaxy
C. Greco, M. Dall'Ora, G. Clementini +11
We report on the detection of variable stars in the Canes Venatici II (CVn II) dwarf spheroidal galaxy, a new satellite of the Milky Way recently discovered by the Sloan Digital Sk…
NGC 2419: an "intergalactic wanderer" or a simple Galactic Globular Cluster?
M. Di Criscienzo, C. Greco, M. Dall'Ora +8
We have carried out a new photometric study of the remote Galactic globular cluster NGC 2419, using proprietary and archive B,V,I time-series CCD photometry of the cluster, that al…
A near-ultraviolet view of the Inner Region of M31 with the Large Binocular Telescope
G. Beccari, M. Bellazzini, G. Clementini +27
We present a 900 sec, wide-field U image of the inner region of the Andromeda galaxy obtained during the commissioning of the blue channel of the Large Binocular Camera mounted on…
The Magellanic Clouds as a template for the study of stellar populations and galaxy interactions
M. -R. L. Cioni, K. Bekki, G. Clementini +18
The Magellanic System represents one of the best places to study the formation and evolution of galaxies. Photometric surveys of various depths, areas and wavelengths have had a si…
Variable Stars in the Newly Discovered Milky Way Dwarf Spheroidal Satellite Canes Venatici I
Charles Kuehn, Karen Kinemuchi, Vincenzo Ripepi +11
We have identified 23 RR Lyrae stars and 3 possible Anomalous Cepheids among 84 candidate variables in the recently discovered Canes Venatici I dwarf spheroidal galaxy. The mean pe…
Variable stars in the Fornax dSph Galaxy. I. The Globular Cluster Fornax 4
C. Greco, G. Clementini, M. Catelan +8
Variable stars have been identified for the first time in Fornax 4, the globular cluster located near the center of the Fornax dwarf spheroidal galaxy. By applying the image subtra…
I Zw 18 revisited with HST/ACS and Cepheids: New Distance and Age
A. Aloisi, G. Clementini, M. Tosi +9
We present new V and I-band HST/ACS photometry of I Zw 18, the most metal-poor blue compact dwarf (BCD) galaxy in the nearby universe. It has been argued in the past that I Zw 18 i…
On the remote Galactic globular cluster NGC 2419
V. Ripepi, G. Clementini, M. Di Criscienzo +8
We present a new, deep (V ~ 26) study of the Galactic globular cluster NGC 2419 based on B,V,I time-series CCD photometry over about 10 years and extending beyond the cluster publi…
Very metal poor Classical Cepheids: variables in IZw18
G. Fiorentino, M. Marconi, G. Clementini +5
In the framework of an ongoing ACS@HST project (HST program #10586, PI: Aloisi) we have obtained deep multi-color imaging of the very metal-poor Blue Compact Dwarf galaxy IZw18. Th…
A New Deep HST/ACS CMD of I Zw 18: Evidence for Red Giant Branch Stars
A. Aloisi, F. Annibali, J. Mack +8
We present results from new deep HST/ACS photometry of I Zw 18, the most metal-poor blue compact dwarf galaxy in the nearby universe. It has been previously argued that this is a v…
A delta Scuti distance to the Large Magellanic Cloud
D. H. McNamara, G. Clementini, M. Marconi
We present results from a well studied delta Scuti star discovered in the LMC. The absolute magnitude of the variable was determined from the PL relation for Galactic delta Scuti s…
Variable stars in the newly discovered Milky Way satellite in Bootes
M. Dall'Ora, G. Clementini, K. Kinemuchi +7
We present light curves for 12 variable stars identified in the newly discovered satellite of the Milky Way in the Bootes constellation (Belokurov et al. 2006).Our sample inc…
Variable stars in the globular cluster NGC 2419
C. Greco, V. Ripepi, L. Federici +7
We have used DOLORES at the TNG to obtain B,V time series photometry of NGC 2419, one of the most distant and bright clusters in the Galactic halo. These data will be used to study…
Metal abundances of RR Lyrae stars in the metal rich globular cluster NGC 6441
G. Clementini, R. G. Gratton, A. Bragaglia +4
Low resolution spectra have been used to measure individual metal abundances of RR Lyrae stars in NGC 6441, a Galactic globular cluster known to have very unusual horizontal branch…
The metal abundance distribution of the oldest stellar component in the Sculptor dwarf spheroidal galaxy
G. Clementini, V. Ripepi, A. Bragaglia +3
(abridged): Low resolution spectroscopy obtained with FORS2 at the Very Large Telescope (VLT) has been used to measure individual metal abundances ([Fe/H]) for 107 RR Lyrae stars,…
A "pulsational" distance determination for the Large Magellanic Cloud
Marcella Marconi, Gisella Clementini
We present results from the theoretical modelling of the observed B,V light curves of 14 RR Lyrae stars in the Large Magellanic Cloud. The sample includes 7 fundamental and 7 first…
Variable stars in the dwarf irregular galaxy NGC 6822: the photometric catalogue
L. Baldacci, L. Rizzi, G. Clementini +1
Deep B,V time-series photometry obtained with the ESO Very Large Telescope has been used to identify variable stars in the dwarf irregular galaxy NGC 6822. We surveyed a 6.8x6.8 ar…
Metal abundances of RR Lyrae stars in the bar of the Large Magellanic Cloud
R. G. Gratton, A. Bragaglia, G. Clementini +5
Metallicities ([Fe/H]) from low resolution spectroscopy obtained with the Very Large Telescope (VLT) are presented for 98 RR Lyrae and 3 short period Cepheids in the bar of the Lar…
Heavy elements abundances in turn-off stars and early subgiants in NGC 6752
G. James, P. Francois, P. Bonifacio +12
High resolution spectra (R > 40 000) for 9 main sequence turn-off stars and 9 subgiants in the globular cluster NGC 6752 were acquired with UVES on the VLT-Kueyen (UT2). These data…
A continuous population of variable stars up to about 1.5 mag above the horizontal branch?
L. Baldacci, G. Clementini, E. V. Held +2
Increasing samples of pulsating variable stars populating the classical instability strip from the horizontal branch to a few magnitudes brighter are being found in several Local G…