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Artículo de revista 2012

Autor: Forster, Francisco González–Gaitán, Santiago Anderson, Joseph Marchi, Sebastián Gutiérrez, Claudia P. Hamuy, Mario Pignata, Giuliano Cartier, Régis

ABSTRACT We study the properties of low–velocitymaterial in the line of sight towards nearby Type Ia Supernovae (SNe Ia) that have measured late phase nebular velocity shifts (vneb), thought to be an environment–independent observable. We have found that the distribution of equivalent widths of n...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/1918

Repositorio Universidad Andrés Bello
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Forster, Francisco ,  González–Gaitán, Santiago ,  Anderson, Joseph ,  Marchi, Sebastián ,  Gutiérrez, Claudia P. ,  Hamuy, Mario ,  Pignata, Giuliano ,  Cartier, Régis ,  [Evidence for asymmetric distribution of circumstellar material around type ia supernovae.] ,  Evidence for asymmetric distribution of circumstellar material around type ia supernovae.
Artículo de Revista 2010

Autor: Pietrzynski, Grzegorz Gieren, Wolfgang Hamuy, Mario Pignata, Giuliano Soszynski, Igor Udalski, Andrzej Walker, Alistair Fouque, Pascal Bresolin, Fabio Kudritzki, Rolf-Peter

We have detected, for the first time, Cepheid variables in the Sculptor Group spiral galaxy NGC 7793. From wide-field images obtained in the optical V and I bands on 56 nights in 2003-2005, we have discovered 17 long-period (24-62 days) Cepheids whose periods and mean magnitudes define tight per...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/1926

Repositorio Universidad Andrés Bello
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Pietrzynski, Grzegorz ,  Gieren, Wolfgang ,  Hamuy, Mario ,  Pignata, Giuliano ,  Soszynski, Igor ,  Udalski, Andrzej ,  Walker, Alistair ,  Fouque, Pascal ,  Bresolin, Fabio ,  Kudritzki, Rolf-Peter ,  [The Araucaria Project. First Cepheid Distance to the Sculptor Group Galaxy NGC 7793 from Variables discovered in a Wide-Field Imaging Survey] ,  The Araucaria Project. First Cepheid Distance to the Sculptor Group Galaxy NGC 7793 from Variables discovered in a Wide-Field Imaging Survey
Artículo de revista 2011

Autor: Cartier, Regis Foster, Francisco Coppi, Paolo Hamuy, Mario Maeda, Keiichi Pignata, Guiliano Folatelli, Gastón

From a sample of 12 well-observed Type Ia supernovae, we find clear evidence of correlations between early phase (U − B), (V − R), and (V − I) colors and the velocity shifts of the [Fe II] λ7155 and [Ni II] λ7378 nebular lines measured from late-phase spectra. As these lines are thought to trace t...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/2296

Repositorio Universidad Andrés Bello
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Cartier, Regis ,  Foster, Francisco ,  Coppi, Paolo ,  Hamuy, Mario ,  Maeda, Keiichi ,  Pignata, Guiliano ,  Folatelli, Gastón ,  [A study of the color diversity around maximum light in Type Ia supernovae] ,  A study of the color diversity around maximum light in Type Ia supernovae

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