The Type II-Plateau supernova (SN II-P) SN 2004dj was the first SN II-P for which
spectropolarimetry
data were obtained with fine temporal sampling before, during, and after its fall off of the
photometric plateau – the point that marks the transition from the photospheric to the nebular phase in...
Leonard, Douglas
,
Dessart, Luc
,
Hillier, Jhon
,
Pignata, Guiliano
,
[A Spectropolarimetric Comparison of the Type II-Plateau Supernovae SN 2008bk and SN 2004dj]
,
A Spectropolarimetric Comparison of the Type II-Plateau Supernovae SN 2008bk and SN 2004dj
New 3,5-dimethyl-4-[(E)-4-(R1-phenyl)diazenyl]isoxazoles and 3,5-dimethyl-1-(R2-phenyl)-4-[(E)-(R1-phenyl)diazenyl]-1H-pyrazoles may be obtained by reaction of 3-[2-(R1-phenyl)hydrazono)]pentane-2,4-dione with H2NOH-HCl and R2-4-C6H4-NHNH2, respectively. The reactions were performed in ethanol as...
Bustos, Carlos
,
Schott, Eduardo
,
Ríos, Marcela
,
Sánchez, Christian
,
Cárcamo, Juan-Guillermo
,
[Facile synthesis of isoxazoles and pyrazoles from ß-diketohydrazones]
,
Facile synthesis of isoxazoles and pyrazoles from ß-diketohydrazones
Relativistic time-dependent density functional (TDDFT) calculations including spin orbit interactions via the zero order regular approximation (ZORA) and solvent effects using the COSMO model were carried out on the [Re6Q8(NCS)6]4- , (Q = S, Se, Te) clusters. These calculations indicate that the ...
Ramírez-Tagle, Rodrigo
,
Alvarado-Soto, Leonor
,
Hernández-Acevedo, Lucia
,
Arratia-Pérez, Ramiro
,
[Spin-orbit and solvent effects in the luminescent [re6q8(ncs)6]4-, q=s, se, te clusters: molecular sensors and molecular devices]
,
Spin-orbit and solvent effects in the luminescent [re6q8(ncs)6]4-, q=s, se, te clusters: molecular sensors and molecular devices
The aggregation of PE4VP-b-PS-b-PE4VP block copolymers was studied in aqueous solution. Triblock copolymers P4VP-b-PS-b-P4VP were synthesized by sequential anionic polymerization of poly(styrene) and poly(4-vinylpirydine) using sodium naphthalene as a bifunctional initiator. Subsequently, the 4-v...
Urbano, Bruno
,
Silva, Patricio
,
Olea, Andrés F.
,
Fuentes, Irma
,
Martínez, Francisco
,
[Self-assembly of triblock copolymers in aqueous solution]
,
Self-assembly of triblock copolymers in aqueous solution
We consider the role of the type-A trace anomaly in static black hole solutions to semiclassical Einstein equations in four dimensions. Via Wald’s Noether charge formalism, we compute the contribution to the entropy coming from the anomaly induced effective action and unveil a logarithmic correct...
Aros, R.
,
Díaz, D.E.
,
Montecinos, A.
,
[Logarithmic correction to BH entropy as Noether charge]
,
Logarithmic correction to BH entropy as Noether charge
Aims. The present study was conducted to determine the optical extinction curve for Cerro Paranal under typical clear-sky observing conditions, with the purpose of providing the community with a function to be used to correct the observed spectra, with an accuracy of 0.01 mag airmass1. Addition...
Patat, F.
,
Moehler, S.
,
O’Brien, K.
,
Pompei, E.
,
Bensby, T.
,
Carraro, G.
,
de Ugarte Postigo, A.
,
Fox, A.
,
Gavignaud, I.
,
James, G.
,
Korhonen, H.
,
Ledoux, C.
,
Randall, S.
,
Sana, H.
,
Smoker, J.
,
Stefl, S.
,
Szeifert, T.
,
[Optical atmospheric extinction over Cerro Paranal]
,
Optical atmospheric extinction over Cerro Paranal
Abstract: We review our recent studies of the globular cluster system of NGC 5128. First, we have obtained low-resolution, high signal-to-noise spectroscopy of 72 globular clusters using Gemini-S/GMOS to obtain the ages, metallicities, and the level of alpha enrichment of the metal-poor and metal...
Woodley, K.A.
,
Gómez, M.
,
[The Globular Cluster System of NGC 5128: Ages, Metallicities, Kinematics, and Structural Parameters]
,
The Globular Cluster System of NGC 5128: Ages, Metallicities, Kinematics, and Structural Parameters
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...
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.
In this work we performed density functional theory calculations for a twisted bilayer graphene (BLG). Several conmensurable rotation angles were analyzed and for each one a constant height mode STM image was obtained. These STM images, calculated under the Tersoff-Hamman theory, reproduce the ma...
Cisternas, E.
,
Correa, J. D.
,
[Ab-initio analysis of superstructures revealed by STM on bilayer graphene]
,
Ab-initio analysis of superstructures revealed by STM on bilayer graphene
We investigate the environment of the nearby (d 40 Mpc) broad-lined Type Ic supernova SN 2009bb. This event was observed to produce a relativistic outflow likely powered by a central accreting compact object. While such a phenomenon was previously observed only in long-duration gamma-ray bursts...
Levesque, E. M.
,
Soderberg, A. M.
,
Foley, R. J.
,
Berger, E.
,
Kewley, L. J.
,
Chakraborti, A. Ray
,
Torres, M. A. P.
,
Challis, P.
,
Kirshner, R. P.
,
Barthelmy, S. D.
,
Bietenholz, M. F.
,
Chandra, P.
,
Chaplin, V.
,
Chevalier, R. A.
,
Chugai, N.
,
Connaughton, V.
,
Copete, A.
,
Fox, O.
,
Fransson, C.
,
Grindlay, J. E.
,
Hamuy, M. A.
,
Milne, P. A.
,
Pignata, G.
,
Stritzinger, M. D.
,
Wieringa, M. H.
,
[The high-metallicity explosion environment of the relativistic supernova 2009bb1]
,
The high-metallicity explosion environment of the relativistic supernova 2009bb1