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Spectroscopic and photometric oscillatory envelope variability during the S Doradus outburst of the luminous blue variable R71
(EDP Sciences, 2017)
Context. Luminous blue variables (LBVs) are evolved massive stars that exhibit instabilities that are not yet understood. Stars can lose several solar masses during this evolutionary phase. The LBV phenomenon is thus ...
Proper motions in the VVV Survey: Results for more than 15 million stars across NGC 6544
(EDP Sciences, 2017)
Context. In the last six years, the VISTA Variable in the Vía Láctea (VVV) survey mapped 562 sq. deg. across the bulge and southern disk of the Galaxy. However, a detailed study of these regions, which includes ∼36 globular ...
The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am
(Institute of Physics Publishing, 2018-01)
We present our analysis of the Type II supernova DLT16am (SN 2016ija). The object was discovered during theongoing D < 40 Mpc (DLT40) one-day cadence supernova search at r ∼ 20.1 mag in the edge-on nearby(D = 20.0 ± 4.0 ...
Análisis de los parámetros de la biblioteca Lin-Kernighan mediante el diseño de un experimento computacional y su incidencia en los buenos resultados
(Universidad Andrés Bello, 2018)
Los problemas de optimización deben enfrentar el obstáculo del costo computacional, de modo de hacer viable su resolución en un tiempo prudente. Sin embargo, la principal dificultad radica en que, si el costo computacional ...
Exploring the multifaceted circumstellar environment of the luminous blue variable HR Carinae
(OXFORD UNIV PRESS, 2016-12)
We present a multiwavelength study of the Galactic luminous blue variable HR Carinae, based on new high-resolution mid-infrared (IR) and radio images obtained with the Very Large Telescope (VLT) and the Australia Telescope ...
Near-infrared photometry of globular clusters towards the Galactic bulge: Observations and photometric metallicity indicators
(OXFORD UNIV PRESS, 2016-09)
We present wide-field JHKS photometry of 16 Galactic globular clusters located towards the Galactic bulge, calibrated on the Two Micron All-Sky Survey photometric system. Differential reddening corrections and statistical ...
A study about regioisomeric hydroquinones with multiple intramolecular hydrogen bonding
(MDPI, 2017-04)
A theoretical exploration about hydrogen bonding in a series of synthetic regioisomeric antitumor tricyclic hydroquinones is presented. The stabilization energy for the intramolecular hydrogen bond (IHB) formation in four ...
An Upper Limit on the Mass of the Circumplanetary Disk for DH Tau b
(Institute of Physics Publishing, 2017-06)
DH Tau is a young (sim;1 Myr) classical T Tauri star. It is one of the few young PMS stars known to be associated with a planetary mass companion, DH Tau b, orbiting at large separation and detected by direct imaging. DH ...
Inclusion of [H3PW12O40] and [H4SiW12O40] into a silica gel matrix via "sol-gel" methodology
(Sociedad Chilena de Química, 2017-03)
Here we report the inclusion of two Keggin Polyoxometalates (POMs), [H3PW12O40] and [H4SiW12O40], into silica gels by integrating them during the preparation of the SiO2 matrix via "sol-gel" methods. Aerogels were produced ...
A population of eruptive variable protostars in VVV
(OXFORD UNIV PRESS, 2016-11)
We present the discovery of 816 high-amplitude infrared variable stars (ΔKs > 1 mag) in 119 deg2 of the Galactic mid-plane covered by the VISTA Variables in the Via Lactea (VVV) survey. Almost all are new discoveries and ...