Now showing items 1-20 of 26

    • Cubillos Vallejos, Patricio Ernesto (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 ...
    • Silva Bustamante, Andrea (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 ...
    • Jones, M. I.; Brahm, R.; Wittenmyer, R. A.; Drass, H.; Jenkins, James Stewart; Melo, C. H. F.; Vos, J.; Rojo Rubke, Patricio (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 ...
    • Falvey, Mark; Rojo Rubke, Patricio (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, ...
    • Radiszcz Sotomayor, Matías Cristóbal (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 ...
    • Marino Estay, Sebastián (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 ...
    • Astudillo Defru, Nicola (Universidad de ChileCyberDocs, 2011)
      Este trabajo de investigaci on se enmarca en el t opico de planetas extrasolares y la caracterizaci on de sus atm osferas. A la fecha, m as de 600 exoplanetas han sido descubiertos mediante distintas t ecnicas, siendo la ...
    • Mahu, R.; Rojo Rubke, Patricio; Dehghan Firoozabadi, A.; Soto, I.; Sedaghati, E.; Becerra Yoma, Néstor (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 ...
    • Jones, M. L.; Jenkins, James Stewart; Brahm, R.; Wittenmyer, R. A.; Olivares, E. F.; Melo, C. H.; Rojo Rubke, Patricio; Jordan, A.; Drass, H.; Butler, R.; Wang, L. (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 ...
    • Jones, M. I.; Jenkins, James Stewart; Rojo Rubke, Patricio; Melo, C. H. F. (EDP Sciences, 2015)
      Context. Precision radial velocities are required to discover and characterize exoplanets. Optical spectra that exhibit many hundreds of absorption lines can allow the m s(-1) precision levels required for this work. After ...
    • Almenara, J.; Astudillo-Defru, N.; Bonfils, X.; Forveille, T.; Santerne, A.; Albrecht, S.; Barros, S.; Bouchy, F.; Delfosse, X.; Demangeon, O.; Diaz, R.; Hébrard, G.; Mayor, M.; Neves, V.; Rojo Rubke, Patricio; Santos, N.; Wünsche, A. (EDP Sciences, 2015)
      K2 space observations recently found that three super-Earths transit the nearby M dwarf K2-3. The apparent brightness and the small physical radius of their host star rank these planets amongst the most favourable for ...
    • Almenara, J. M.; Astudillo Defru, N.; Bonfils, X.; Forveille, T.; Santerne, A.; Albrecht, S.; Barros, S. C. C.; Bouchy, F.; Delfosse, X.; Demangeon, O.; Diaz, R. F.; Hébrard, G.; Mayor, M.; Neves, V.; Rojo Rubke, Patricio; Santos, N. C.; Wünsche, A. (EDP Sciences, 2015)
      K2 space observations recently found that three super-Earths transit the nearby M dwarf K2-3. The apparent brightness and the small physical radius of their host star rank these planets amongst the most favourable for ...
    • Neveu VanMalle, M.; Queloz, D.; Anderson, D.; Brown, D.; Cameron, A. Collier; Delrez, L.; Diaz, R.; Gillon, M.; Hellier, C.; Jehin, E.; Lister, T.; Pepe, F.; Rojo Rubke, Patricio; Segransan, D.; Triaud, A.; Turner, O.; Udry, S. (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 ...
    • Jenkins, James Stewart; Becerra Yoma, Néstor; Rojo Rubke, Patricio; Mahu, R.; Wuth Sepúlveda, Jorge Iván. (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 ...
    • Adamkovics, Mate; Mitchell, Jonathan; Hayes, Alexander; Rojo Rubke, Patricio; Collies, Paul; Barnes, Jason; Ivanov, Valentin; Brown, Robert; Baines, Kevin; Buratti, Bonnie (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 ...
    • Jones, M.; Jenkins, James Stewart; Rojo Rubke, Patricio; Melo, C.; Bluhm, P. (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 ...
    • Salinas Poblete, Vachail Nicolás (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 ...
    • Murgas Alcaíno, Felipe Andrés (Universidad de ChileCyberDocs, 2010)
    • Hoyer Miranda, Sergio David (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 ...
    • Bosh, A. S.; Person, M. J.; Levine, S. E.; Zuluaga, C. A.; Zangari, A. M.; Gulbis, A. A. S.; Schaefer, G. H.; Dunham, E. W.; Babcock, Bryce A.; Davis, A. B.; Pasachoff, J. M.; Rojo Rubke, Patricio; Servajean, E.; Forster, Francisco; Oswalt, T.; Batcheldor, D.; Bell, D.; Bird, P.; Fey, D.; Fulwider, T.; Geisert, E.; Hastings, D.; Keuhler, C.; Mizusawa, T.; Solenski, P.; Watson, B. (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, ...