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Article 2018-06

Autor: Caffau, E. Gallagher, A.J. Bonifacio, P. Spite, M. Duffau, S. Spite, F. Monaco, L. Sbordone, L.

Aims. Carbon-enhanced metal-poor (CEMP) stars represent a sizeable fraction of all known metal-poor stars in the Galaxy. Their formation and composition remains a significant topic of investigation within the stellar astrophysics community. Methods. We analysed a sample of low-resolution spectra ...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/9238

Repositorio Universidad Andrés Bello
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Caffau, E. ,  Gallagher, A.J. ,  Bonifacio, P. ,  Spite, M. ,  Duffau, S. ,  Spite, F. ,  Monaco, L. ,  Sbordone, L. ,  [Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS] ,  Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS
Article 2018-11

Autor: Villanova, S. Carraro, G. Geisler, D. Monaco, L. Assmann, P.

NGC 6791 is a unique stellar cluster, key to our understanding of both the multiple stellar population phenomenon and the evolution and assembly of the Galaxy. However, despite many investigations, its nature is still very controversial. Geisler et al. found evidence suggesting that it was the fi...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11488

Repositorio Universidad Andrés Bello
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Villanova, S. ,  Carraro, G. ,  Geisler, D. ,  Monaco, L. ,  Assmann, P. ,  [NGC 6791: A Probable Bulge Cluster without Multiple Populations] ,  NGC 6791: A Probable Bulge Cluster without Multiple Populations
Article 2018-11

Autor: Boffin, H.M.J. Jones, D. Wesson, R. Beletsky, Y. Miszalski, B. Saviane, I. Monaco, L. Corradi, R. Santander García, M. Rodríguez-Gil, P.

Bipolar planetary nebulae (PNe) are thought to result from binary star interactions and, indeed, tens of binary central stars of PNe have been found, in particular using photometric time-series that allow for the detection of post-common envelope systems. Using photometry at the NTT in La Silla w...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11525

Repositorio Universidad Andrés Bello
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Boffin, H.M.J. ,  Jones, D. ,  Wesson, R. ,  Beletsky, Y. ,  Miszalski, B. ,  Saviane, I. ,  Monaco, L. ,  Corradi, R. ,  Santander García, M. ,  Rodríguez-Gil, P. ,  [When nature tries to trick us: An eclipsing eccentric close binary superposed on the central star of the planetary nebula M 3-2] ,  When nature tries to trick us: An eclipsing eccentric close binary superposed on the central star of the planetary nebula M 3-2
Article 2018-08

Autor: Hernández-García, L. Vietri, G. Panessa, F. Piconcelli, E. Chavushyan, V. Jiménez-Andrade, E.F. Bassani, L. Bazzano, A. Cazzoli, S. Malizia, A. Masetti, N. Monaco, L. Pović, M. Saviane, I. Ubertini, P.

PBC J2333.9-2343 is a peculiar active nucleus with two giant radio lobes and a weak blazarlike nucleus at their centre. In this work we show new optical, ultraviolet (UV), and X-ray data taken from the San Pedro Mártir telescope, the New Technology Telescope, NTT/EFOSC2, and the Swift/XRT satelli...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/10640

Repositorio Universidad Andrés Bello
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Hernández-García, L. ,  Vietri, G. ,  Panessa, F. ,  Piconcelli, E. ,  Chavushyan, V. ,  Jiménez-Andrade, E.F. ,  Bassani, L. ,  Bazzano, A. ,  Cazzoli, S. ,  Malizia, A. ,  Masetti, N. ,  Monaco, L. ,  Pović, M. ,  Saviane, I. ,  Ubertini, P. ,  [Variable broad lines and outflow in the weak blazar PBC J2333.9-2343] ,  Variable broad lines and outflow in the weak blazar PBC J2333.9-2343
Article 2018-04

Autor: Randich, S. Tognelli, E. Jackson, R. Jeffries, R.D. Degl'Innocenti, S. Pancino, E. Fiorentin, P.R. Spagna, A. Sacco, G. Bragaglia, A. Magrini, L. Moroni, P.G.P. Alfaro, E. Franciosini, E. Morbidelli, L. Roccatagliata, V. Bouy, H. Bravi, L. Jiménez-Esteban, F.M. Jordi, C. Zari, E. Tautvaišiene, G. Drazdauskas, A. Mikolaitis, S. Gilmore, G. Feltzing, S. Vallenari, A. Bensby, T. Koposov, S. Korn, A. Lanzafame, A. Smiljanic, R. Bayo, A. Carraro, G. Costado, M.T. Heiter, U. Hourihane, A. Jofré, P. Lewis, J. Monaco, L. Prisinzano, L. Sbordone, L. Sousa, S.G. Worley, C.C. Zaggia, S.

Context. Determination and calibration of the ages of stars, which heavily rely on stellar evolutionary models, are very challenging, while representing a crucial aspect in many astrophysical areas. Aims. We describe the methodologies that, taking advantage of Gaia-DR1 and the Gaia-ESO Survey dat...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/8928

Repositorio Universidad Andrés Bello
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Randich, S. ,  Tognelli, E. ,  Jackson, R. ,  Jeffries, R.D. ,  Degl'Innocenti, S. ,  Pancino, E. ,  Fiorentin, P.R. ,  Spagna, A. ,  Sacco, G. ,  Bragaglia, A. ,  Magrini, L. ,  Moroni, P.G.P. ,  Alfaro, E. ,  Franciosini, E. ,  Morbidelli, L. ,  Roccatagliata, V. ,  Bouy, H. ,  Bravi, L. ,  Jiménez-Esteban, F.M. ,  Jordi, C. ,  Zari, E. ,  Tautvaišiene, G. ,  Drazdauskas, A. ,  Mikolaitis, S. ,  Gilmore, G. ,  Feltzing, S. ,  Vallenari, A. ,  Bensby, T. ,  Koposov, S. ,  Korn, A. ,  Lanzafame, A. ,  Smiljanic, R. ,  Bayo, A. ,  Carraro, G. ,  Costado, M.T. ,  Heiter, U. ,  Hourihane, A. ,  Jofré, P. ,  Lewis, J. ,  Monaco, L. ,  Prisinzano, L. ,  Sbordone, L. ,  Sousa, S.G. ,  Worley, C.C. ,  Zaggia, S. ,  [The Gaia -ESO Survey: Open clusters in Gaia -DR1: A way forward to stellar age calibration] ,  The Gaia -ESO Survey: Open clusters in Gaia -DR1: A way forward to stellar age calibration
Article 2017-07

Autor: Mucciarelli, A. Monaco, L. Bonifacio, P. Saviane, I.

We observed six He-clump stars of the intermediate-Age stellar cluster Gaia1 with the MIKE/Magellan spectrograph. A possible extra-galactic origin of this cluster, recently discovered thanks to the first data release of the ESA Gaia mission, has been suggested, based on its orbital parameters. Ab...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/5034

Repositorio Universidad Andrés Bello
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Mucciarelli, A. ,  Monaco, L. ,  Bonifacio, P. ,  Saviane, I. ,  [Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius] ,  Chemical composition of the stellar cluster Gaia1: No surprise behind Sirius
Article 2016-03

Autor: Lanza, A. F. Molaro, P. Monaco, L. Haywood, R. D.

Context. Stellar radial velocities play a fundamental role in the discovery of extrasolar planets and the measurement of their physical parameters as well as in the study of stellar physical properties. Aims. We investigate the impact of the solar activity on the radial velocity of the Sun usin...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/3969

Repositorio Universidad Andrés Bello
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Lanza, A. F. ,  Molaro, P. ,  Monaco, L. ,  Haywood, R. D. ,  [Long-term radial-velocity variations of the Sun as a star: The HARPS view] ,  Long-term radial-velocity variations of the Sun as a star: The HARPS view
Article 2017

Autor: Merle, T. Van Eck, S. Jorissen, A. Van Der Swaelmen, M. Masseron, T. Zwitter, T. Hatzidimitriou, D. Klutsch, A. Pourbaix, D. Blomme, R. Worley, C.C. Sacco, G. Lewis, J. Abia, C. Traven, G. Sordo, R. Bragaglia, A. Smiljanic, R. Pancino, E. Damiani, F. Hourihane, A. Gilmore, G. Randich, S. Koposov, S. Casey, A. Morbidelli, L. Franciosini, E. Magrini, L. Jofre, P. Costado, M.T. Jeffries, R.D. Bergemann, M. Lanzafame, A.C. Bayo, A. Carraro, G. Flaccomio, E. Monaco, L. Zaggia, S.

Context. The Gaia-ESO Survey (GES) is a large spectroscopic survey that provides a unique opportunity to study the distribution of spectroscopic multiple systems among different populations of the Galaxy. Aims. Our aim is to detect binarity/multiplicity for stars targeted by the GES from the anal...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/6190

Repositorio Universidad Andrés Bello
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Merle, T. ,  Van Eck, S. ,  Jorissen, A. ,  Van Der Swaelmen, M. ,  Masseron, T. ,  Zwitter, T. ,  Hatzidimitriou, D. ,  Klutsch, A. ,  Pourbaix, D. ,  Blomme, R. ,  Worley, C.C. ,  Sacco, G. ,  Lewis, J. ,  Abia, C. ,  Traven, G. ,  Sordo, R. ,  Bragaglia, A. ,  Smiljanic, R. ,  Pancino, E. ,  Damiani, F. ,  Hourihane, A. ,  Gilmore, G. ,  Randich, S. ,  Koposov, S. ,  Casey, A. ,  Morbidelli, L. ,  Franciosini, E. ,  Magrini, L. ,  Jofre, P. ,  Costado, M.T. ,  Jeffries, R.D. ,  Bergemann, M. ,  Lanzafame, A.C. ,  Bayo, A. ,  Carraro, G. ,  Flaccomio, E. ,  Monaco, L. ,  Zaggia, S. ,  [The Gaia -ESO Survey: Double-, triple-, and quadruple-line spectroscopic binary candidates] ,  The Gaia -ESO Survey: Double-, triple-, and quadruple-line spectroscopic binary candidates
Article 2015-07

Autor: Sbordone, L. Monaco, L. Moni Bidin, C. Bonifacio, P. Villanova, S. Bellazzini, M. Ibata, R. Chiba, M. Geisler, D. Caffau, E. Duffau, S.

Context. The tidal disruption of the Sagittarius dwarf spheroidal galaxy (Sgr dSph) is producing the most prominent substructure in the Milky Way (MW) halo, the Sagittarius Stream. Aside from field stars, it is suspected that the Sgr dSph has lost a number of globular clusters (GC). Many Galactic...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/3763

Repositorio UNAB
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Sbordone, L. ,  Monaco, L. ,  Moni Bidin, C. ,  Bonifacio, P. ,  Villanova, S. ,  Bellazzini, M. ,  Ibata, R. ,  Chiba, M. ,  Geisler, D. ,  Caffau, E. ,  Duffau, S. ,  [Chemical abundances of giant stars in NGC 5053 and NGC 5634, two globular clusters associated with the Sagittarius dwarf spheroidal galaxy?] ,  Chemical abundances of giant stars in NGC 5053 and NGC 5634, two globular clusters associated with the Sagittarius dwarf spheroidal galaxy?

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