Browsing by Author "XX601308"
Now showing items 1-20 of 22
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A High Resolution Spectroscopic Search For The Thermal Emission of The Extrasolar Planet HD 21707 B (Universidad de Chile, 2011)En este trabajo hemos retomado y afinado un método de correlación para buscar directamente, en alta resolución, el espectro de planetas extrasolares sin tránsito. Nuestro objetivo principal es caracterizar las propiedades ...
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(Universidad de Chile, 2010)El objetivo de esta tesis es estudiar las propiedades físicas y cinemáticas en el interior de seis núcleos densos y masivos seleccionados en base a la forma de sus perfiles de la línea CS(2-1), que indican existencia de ...
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(EDP Sciences, 2017)We report the discovery of a substellar companion around the giant star HIP 67537. Based on precision radial velocity measurements from CHIRON and FEROS high-resolution spectroscopic data, we derived the following orbital ...
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(Springer, 2016)The quality of ground-based astronomical observations is significantly affected by local atmospheric conditions, and the search for the best sites has led to the construction of observatories at increasingly remote locations, ...
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(Universidad de ChileCyberDocs, 2010)En esta tesis presentamos los resultados de una búsqueda sistemática, profunda y de alta resolución angular, de objetos estelares de baja masa y objectos sub-estelares orbitando enanas blancas cercanas. Los objetos fueron ...
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(Universidad de Chile, 2015)Actualmente se piensa que los planetas se forman alrededor de estrellas jovenes en discos circumestelares que pueden durar unos pocos Ma. Estos discos protoplanetarios evolucionan a traves de diferentes mecanismos. Dos ...
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(Elsevier, 2017)In this paper a homomorphic filtering scheme is proposed to improve the estimation of the planet/star radius ratio in astronomical transit signals. The idea is to reduce the effect of the short-term earth atmosphere ...
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(EDP Sciences, 2016)Context. Exoplanet searches have revealed interesting correlations between the stellar properties and the occurrence rate of planets. In particular, different independent surveys have demonstrated that giant planets are ...
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(EDP SCIENCES, 2016)We report the discovery of two additional planetary companions to WASP-41 and WASP-47. WASP-41 c is a planet of minimum mass 3.18 +/-0.20 M-Jup and eccentricity 0.29 +/- 0.02, and it orbits in 421 +/- 2 days. WASP-47 c is ...
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(Montlhy Notices of The Royal Society Astronomy, 2014-04-04)The hunt for Earth analogue planets orbiting Sun-like stars has forced the introduction of novel methods to detect signals at, or below, the level of the intrinsic noise of the observations. We present a new global ...
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Meridional variation in tropospheric methane on Titan observed with AO spectroscopy at Keck and VLT (Elsevier, 2016)The spatial distribution of the tropospheric methane on Titan was measured using near-infrared spectroscopy. Ground-based observations at 1.5 mu m (H-band) were performed during the same night using instruments with adaptive ...
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A planetary system and a highly eccentric brown dwarf around the giant stars HIP 67851 and HIP 97233 (EDP Sciences, 2015)Context. So far more than 60 substellar companions have been discovered around giant stars. These systems present physical and orbital properties that contrast with those detected orbiting less evolved stars. Aims. We ...
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(Universidad de Chile, 2013)Direct Imaging of circumstellar material and forming exoplanets around young stellar objects (YSO's) is a challenging task. Several techniques have been developed for this purpose, among them we focused on the spectral ...
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Propiedades Físicas y Cinemáticas de Estrellas de la Vecindad Solar Pertenecientes al Hemisferio Sur (Universidad de ChileCyberDocs, 2010)
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(Universidad de Chile, 2012)Observing the changes in the orbital period of transiting exoplanets produced by gravitational perturbations allows to detect unseen orbital companions in the system. With this technique,known asTransitTimingVariations(T ...
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(Elsevier, 2015)We observed two stellar occultations on UT 4 May 2013 and UT 9 September 2012, with the aim of measuring Pluto’s atmospheric parameters. Both of these events were observed by world-wide collaborations of many observers, ...
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(Universidad de Chile, 2012)Estudios recientes en longitudes de onda submilimétrica han mostrado que las estructuras filamentarias se ubican por todo el Plano Galáctico, estando en muchos casos asociadas a zonas de formación estelar. El estudio de ...
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(Oxford University Press, 2020)In the context of the Transit Monitoring in the South project, we present nine new transit observations of the exoplanet OGLE-TR-113b observed with the Gemini South, Magellan Baade, Danish-1.54 m and Southern Astrophysical ...
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(EDP Sciences, 2020)We present 22 new transit observations of the exoplanets WASP-18Ab, WASP-19b, and WASP-77Ab, from the Transit Monitoring in the South project. We simultaneously model our newly collected transit light curves with archival ...
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(IOP Publishing, 2016)We observed occultations by Pluto during a predicted series of events in 2014 July with the 1 m telescope of the Mt. John Observatory in New Zealand. The predictions were based on updated astrometry obtained in the previous ...
