Claudia Gutierrez - Profile on Academia.edu (original) (raw)
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EHESS-Ecole des hautes études en sciences sociales
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Papers by Claudia Gutierrez
Linguistic Context Effects on Attentional Control of Naming Pathways
PsycEXTRA Dataset, 2000
Revista de geografía Norte Grande, 2012
Los espacios mineros decimonónicos y de principios del siglo XX, poseen cada vez mayor reconocimi... more Los espacios mineros decimonónicos y de principios del siglo XX, poseen cada vez mayor reconocimiento entre planifi cadores, como una particular forma de patrimonio. Sus impulsores señalan la importancia de los vestigios mineros como testimonios de la revolución industrial, y su signifi cancia para la identidad local. De igual modo, han promovido su reutilización para el turismo cultural. Por otra parte, previo a su reutilización, diversos riesgos ambientales presentes en estos territorios deben ser considerados. A partir del ex poblado carbonífero de Lota, el artículo identifi ca los principales elementos del patrimonio minero y los riesgos ambientales asociados. Los resultados permiten constatar la profunda vinculación existente entre las áreas de mayor valor patrimonial y las de riesgo ambiental y, por lo tanto, la necesidad de un abordaje integrado de los objetivos de puesta en valor y los de remediación. Todo lo anterior, como requisito para una reutilización sostenible del espacio minero en la fase postextractiva.
Spectral analysis of type II supernovae
Proceedings of the International Astronomical Union, 2013
ABSTRACT
The Astrophysical Journal, 2012
We study the properties of low-velocity material in the line of sight toward nearby Type Ia super... more We study the properties of low-velocity material in the line of sight toward nearby Type Ia supernovae (SNe Ia) that have measured late phase nebular velocity shifts (v neb ), thought to be an environment-independent observable. We have found that the distribution of equivalent widths of narrow blended Na i D1 and D2 and Ca ii H and K absorption lines differs significantly between those SNe Ia with negative and positive v neb , with generally stronger absorption for SNe Ia with v neb 0. A similar result had been found previously for the distribution of colors of SNe Ia, which was interpreted as a dependence of the temperature of the ejecta with viewing angle. Our work suggests that (1) a significant part of these differences in color should be attributed to extinction, (2) this extinction is caused by an asymmetric distribution of circumstellar material (CSM), and (3) the CSM absorption is generally stronger on the side of the ejecta opposite to where the ignition occurs. Since it is difficult to explain (3) via any known physical processes that occur before explosion, we argue that the asymmetry of the CSM is originated after explosion by a stronger ionizing flux on the side of the ejecta where ignition occurs, probably due to a stronger shock breakout and/or more exposed radioactive material on one side of the ejecta. This result has important implications for both progenitor and explosion models.
Linguistic Context Effects on Attentional Control of Naming Pathways
PsycEXTRA Dataset, 2000
Revista de geografía Norte Grande, 2012
Los espacios mineros decimonónicos y de principios del siglo XX, poseen cada vez mayor reconocimi... more Los espacios mineros decimonónicos y de principios del siglo XX, poseen cada vez mayor reconocimiento entre planifi cadores, como una particular forma de patrimonio. Sus impulsores señalan la importancia de los vestigios mineros como testimonios de la revolución industrial, y su signifi cancia para la identidad local. De igual modo, han promovido su reutilización para el turismo cultural. Por otra parte, previo a su reutilización, diversos riesgos ambientales presentes en estos territorios deben ser considerados. A partir del ex poblado carbonífero de Lota, el artículo identifi ca los principales elementos del patrimonio minero y los riesgos ambientales asociados. Los resultados permiten constatar la profunda vinculación existente entre las áreas de mayor valor patrimonial y las de riesgo ambiental y, por lo tanto, la necesidad de un abordaje integrado de los objetivos de puesta en valor y los de remediación. Todo lo anterior, como requisito para una reutilización sostenible del espacio minero en la fase postextractiva.
Spectral analysis of type II supernovae
Proceedings of the International Astronomical Union, 2013
ABSTRACT
The Astrophysical Journal, 2012
We study the properties of low-velocity material in the line of sight toward nearby Type Ia super... more We study the properties of low-velocity material in the line of sight toward nearby Type Ia supernovae (SNe Ia) that have measured late phase nebular velocity shifts (v neb ), thought to be an environment-independent observable. We have found that the distribution of equivalent widths of narrow blended Na i D1 and D2 and Ca ii H and K absorption lines differs significantly between those SNe Ia with negative and positive v neb , with generally stronger absorption for SNe Ia with v neb 0. A similar result had been found previously for the distribution of colors of SNe Ia, which was interpreted as a dependence of the temperature of the ejecta with viewing angle. Our work suggests that (1) a significant part of these differences in color should be attributed to extinction, (2) this extinction is caused by an asymmetric distribution of circumstellar material (CSM), and (3) the CSM absorption is generally stronger on the side of the ejecta opposite to where the ignition occurs. Since it is difficult to explain (3) via any known physical processes that occur before explosion, we argue that the asymmetry of the CSM is originated after explosion by a stronger ionizing flux on the side of the ejecta where ignition occurs, probably due to a stronger shock breakout and/or more exposed radioactive material on one side of the ejecta. This result has important implications for both progenitor and explosion models.