Browsing by Author "Sollima, A."
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- ItemA survey for dwarf galaxy remnants around 14 globular clusters in the outer halo(2018) Sollima, A.; Delgado, D. Martinez; Munoz, R. R.; Carballo-Bello, J. A.; Valls-Gabaud, D.; Grebel, E. K.; Santana, F. A.; Cote, P.; Djorgovski, S. G.
- ItemKinematics of a globular cluster with an extended profile: NGC 5694(2015) Bellazzini, M.; Mucciarelli, A.; Sollima, A.; Catelan, Márcio; Dalessandro, E.; Correnti, M.; D'Orazi, V.; Cortés, C .; Amigo, P.
- ItemNew Metallicities of Rr Lyrae Stars in Omega Centauri: Evidence for a Non-He-Enhanced Metal-Intermediate Population(2006) Sollima, A.; Catelan, Márcio; Minniti, D.
- ItemThe extended structure of the dwarf irregular galaxies Sextans A and Sextans B Signatures of tidal distortion in the outskirts of the Local Group(2014) Bellazzini, M.; Beccari, G.; Fraternali, F.; Oosterloo, T. A.; Sollima, A.; Testa, V.; Galleti, S.; Perina Pala, Sibilla; Faccini, M.; Cusano, F.
- ItemThe extended structure of the dwarf irregular galaxy Sagittarius(2014) Beccari, G.; Bellazzini, M.; Fraternali, F.; Battaglia, G.; Perina, S.; Sollima, A.; Oosterloo, T. A.; Testa, V.; Galleti, S.We present a detailed study of the stellar and H I structure of the dwarf irregular galaxy Sagittarius. We use new deep and wide field photometry to trace the surface brightness profile of the galaxy out to similar or equal to 5.0' (corresponding to similar or equal to 1600 pc) and down to mu V similar or equal to 30.0 mag/arcsec(2), thus showing that the stellar body of the galaxy is much more extended than previously believed, and it is similarly (or more) extended than the overall H i distribution. The whole major-axis profile is consistent with a pure exponential, with a scale radius of similar or equal to 340 pc. The surface density maps reveal that the distribution of old and intermediate-age stars is smooth and remarkably flattened out to its edges, while the associated H I has a much rounder shape, is off-centred and presents multiple density maxima and a significant hole. No clear sign of systemic rotation is detectable in the complex H i velocity field. No metallicity gradient is detected in the old and intermediate age population of the galaxy, and we confirm that this population has a much more extended distribution than young stars (age less than or similar to 1 Gyr).
- ItemThe globular cluster NGC7492 and the Sagittarius tidal stream : Together but unmixed(2018) Carballo Bello, J.A.; Corral Santana, J.M.; Catelan, Márcio; Martínez Delgado, D.; Muñoz, R.R.; Sollima, A.; Navarrete, C.; Duffau, S.; Coté, P.; Mora, M.D.
- ItemThe southern leading and trailing wraps of the Sagittarius tidal stream around the globular cluster Whiting 1(2017) Carballo Bello, J. A.; Corral Santana, J. M.; Martínez Delgado, D.; Sollima, A.; Muñoz, R. R.; Côté, P.; Duffau, S.; Catelan, Márcio; Grebel, E. K.