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Article 2016-06

Autor: Barbuy, B. Cantelli, E. Vemado, A. Ernandes, H. Ortolani, S. Saviane, I. Bica, E. Minniti, D. Dias, B. Momany, Y. Hill, V. Zoccali, M. Siqueira-Mello, C.

Context. The globular cluster HP 1 is projected at only 3.̊33 from the Galactic center. Together with its distance, this makes it one of the most central globular clusters in the Milky Way. It has a blue horizontal branch (BHB) and a metallicity of [Fe/H] ≈ −1.0. This means that it probably is on...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/2787

Repositorio Universidad Andrés Bello
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Barbuy, B. ,  Cantelli, E. ,  Vemado, A. ,  Ernandes, H. ,  Ortolani, S. ,  Saviane, I. ,  Bica, E. ,  Minniti, D. ,  Dias, B. ,  Momany, Y. ,  Hill, V. ,  Zoccali, M. ,  Siqueira-Mello, C. ,  [High-resolution abundance analysis of red giants in the metal-poor bulge globular cluster HP 1] ,  High-resolution abundance analysis of red giants in the metal-poor bulge globular cluster HP 1
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 2018-11

Autor: Barbuy, B. Muniz, L. Ortolani, S. Ernandes, H. Dias, B. Saviane, I. Kerber, L. Bica, E. Pérez-Villegas, A. Rossi, L. Held, E.V.

Context. NGC 6558 is a bulge globular cluster with a blue horizontal branch (BHB), combined with a metallicity of [Fe/H] â‰-1.0. It is similar to HP 1 and NGC 6522, which could be among the oldest objects in the Galaxy. Element abundances in these clusters could reveal the nature of the first sup...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11578

Repositorio Universidad Andrés Bello
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Barbuy, B. ,  Muniz, L. ,  Ortolani, S. ,  Ernandes, H. ,  Dias, B. ,  Saviane, I. ,  Kerber, L. ,  Bica, E. ,  Pérez-Villegas, A. ,  Rossi, L. ,  Held, E.V. ,  [High-resolution abundance analysis of four red giants in the globular cluster NGC 6558] ,  High-resolution abundance analysis of four red giants in the globular cluster NGC 6558
Article 2018-03

Autor: D'Orazi, V. Magurno, D. Bono, G. Matsunaga, N. Braga, V.F. Elgueta, S.S. Fukue, K. Hamano, S. Inno, L. Kobayashi, N. Kondo, S. Monelli, M. Nonino, M. Przybilla, N. Sameshima, H. Saviane, I. Taniguchi, D. Thevenin, F. Urbaneja-Perez, M. Watase, A. Arai, A. Bergemann, M. Buonanno, R. Dall'Ora, M. Da Silva, R. Fabrizio, M. Ferraro, I. Fiorentino, G. Francois, P. Gilmozzi, R. Iannicola, G. Ikeda, Y. Jian, M. Kawakita, H. Kudritzki, R.P. Lemasle, B. Marengo, M. Marinoni, S. Martínez-Vázquez, C.E. Minniti, D. Neeley, J. Otsubo, S. Prieto, J.L. Proxauf, B. Romaniello, M. Sanna, N. Sneden, C. Takenaka, K. Tsujimoto, T. Valenti, E. Yasui, C. Yoshikawa, T. Zoccali, M.

We present the first spectroscopic abundance determination of iron, α-elements (Si, Ca, and Ti), and sodium for the Mira variable V1 in the metal-rich globular cluster NGC 5927. We use high-resolution (R ∼ 28,000), high signal-to-noise ratio (∼200) spectra collected with WINERED, a near-infrared ...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/7048

Repositorio Universidad Andrés Bello
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D'Orazi, V. ,  Magurno, D. ,  Bono, G. ,  Matsunaga, N. ,  Braga, V.F. ,  Elgueta, S.S. ,  Fukue, K. ,  Hamano, S. ,  Inno, L. ,  Kobayashi, N. ,  Kondo, S. ,  Monelli, M. ,  Nonino, M. ,  Przybilla, N. ,  Sameshima, H. ,  Saviane, I. ,  Taniguchi, D. ,  Thevenin, F. ,  Urbaneja-Perez, M. ,  Watase, A. ,  Arai, A. ,  Bergemann, M. ,  Buonanno, R. ,  Dall'Ora, M. ,  Da Silva, R. ,  Fabrizio, M. ,  Ferraro, I. ,  Fiorentino, G. ,  Francois, P. ,  Gilmozzi, R. ,  Iannicola, G. ,  Ikeda, Y. ,  Jian, M. ,  Kawakita, H. ,  Kudritzki, R.P. ,  Lemasle, B. ,  Marengo, M. ,  Marinoni, S. ,  Martínez-Vázquez, C.E. ,  Minniti, D. ,  Neeley, J. ,  Otsubo, S. ,  Prieto, J.L. ,  Proxauf, B. ,  Romaniello, M. ,  Sanna, N. ,  Sneden, C. ,  Takenaka, K. ,  Tsujimoto, T. ,  Valenti, E. ,  Yasui, C. ,  Yoshikawa, T. ,  Zoccali, M. ,  [On the Chemical Abundances of Miras in Clusters: V1 in the Metal-rich Globular NGC 5927] ,  On the Chemical Abundances of Miras in Clusters: V1 in the Metal-rich Globular NGC 5927
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 2018-06

Autor: Kovtyukh, V. Yegorova, I. Andrievsky, S. Korotin, S. Saviane, I. Lemasle, B. Chekhonadskikh, F. Belik, S.

The chemical composition of 28 Population II Cepheids and one RR Lyrae variable has been studied using high-resolution spectra. The chemical composition of W Vir variable stars (with periods longer than 8 d) is typical for the halo and thick disc stars. However, the chemical composition of BL Her...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/8924

Repositorio Universidad Andrés Bello
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Kovtyukh, V. ,  Yegorova, I. ,  Andrievsky, S. ,  Korotin, S. ,  Saviane, I. ,  Lemasle, B. ,  Chekhonadskikh, F. ,  Belik, S. ,  [Type II Cepheids: Evidence for Na-O anticorrelation for BL Her type stars?] ,  Type II Cepheids: Evidence for Na-O anticorrelation for BL Her type stars?
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

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