Now showing items 1-20 of 122

    • A multiwavelength study of young massive star forming regions. II. The dust environment 

      Garay Brignardello, Guido; Mardones Pérez, Diego; Brooks, Kate J.; Videla, Liza; Contreras, Yanett (2007)
      We present observations of 1.2 mm dust continuum emission made with the Swedish-ESO Submillimeter Telescope toward 18 luminous IRAS point sources, all with colors typical of compact H II regions and associated with CS(2 ...
    • A parsec-scale flow associated with the IRAS 16547-4247 radio jet 

      Brooks, Kate J.; Garay Brignardello, Guido; Mardones Pérez, Diego; Bronfman Aguiló, Leonardo (UNIV CHICAGO PRESS, 2003-09-10)
      IRAS 16547 - 4247 is the most luminous (6.2 x 10(4) L-.) embedded young stellar object known to harbor a thermal radio jet. We report the discovery using the Very Large Telescope Infrared Spectrometer and Array Camera of ...
    • A Protostellar Jet Emanating from a hypercompact H II Region 

      Guzmán Fernández, Andrés; Garay Brignardello, Guido; Rodríguez, Luis F.; Contreras, Yanett; Dougados, Catherine; Cabrit, Sylvie (IOP, 2016)
      We present radio continuum observations of the high-mass young stellar object (HMYSO) G345.4938+01.4677 obtained using the Australia Telescope Compact Array (ATCA) at 5, 9, 17, and 19 GHz. These observations provide definite ...
    • A search for ionized jets towards massive young stellar objects 

      Purser, S. J. D.; Lumsden, S. L.; Hoare, M. G.; Urquhart, J. S.; Cunningham, N.; Purcell, C. R.; Brooks, K. J.; Garay Brignardello, Guido; Guzmán Fernández, Andrés; Voronkov, M. A. (Oxford University Press, 2016)
      Radio continuum observations using the Australia telescope compact array at 5.5, 9.0, 17.0 and 22.8 GHz have detected free-free emission associated with 45 of 49 massive young stellar objects and H ii regions. Of these, ...
    • A wide-angle outflow with the simultaneous presence of a high-velocity jet in the high-mass Cepheus A HW2 system 

      Torrelles, J. M.; Patel, N. A.; Curiel, S.; Estalella, R.; Gómez, J. F.; Rodríguez, L. F.; Cantó, J.; Anglada Escudé, Guillem; Vlemmings, W.; Garay Brignardello, Guido; Raga, A. C.; Ho, P. T. P. (2011)
      We present five epochs of VLBI water maser observations around the massive protostar Cepheus A HW2 with 0.4 mas (0.3 au) resolution. The main goal of these observations was to follow the evolution of the remarkable water ...
    • Acreción en Núcleos Densos Masivos 

      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 ...
    • ALMA cycle 1 observations of the hh46/47 molecular outflow: structure, entrainment, and core impact 

      Zhang, Yichen; Arce, Héctor G.; Mardones Pérez, Diego; Cabrit, Sylvie; Dunham, Michael M.; Garay Brignardello, Guido; Noriega-Crespo, Alberto; Offner, Stella; Raga, Alejandro; Corder, Stuartt A. (The American Astronomical Society, 2016-12-01)
      We present Atacama Large Millimeter/sub-millimeter Array Cycle 1 observations of the HH 46/47 molecular outflow using combined 12 m array and Atacama Compact Array observations. The improved angular resolution and sensitivity ...
    • ALMA OBSERVATIONS OF THE HH 46/47 MOLECULAR OUTFLOW 

      Arce, Héctor G.; Mardones Pérez, Diego; Corder, Stuartt A.; Garay Brignardello, Guido; Noriega - Crespo, Alberto; Raga, Alejandro C. (The American Astronomical Society, 2013-09-01)
      The morphology, kinematics, and entrainment mechanism of the HH 46/47 molecular outflow were studied using new ALMA Cycle 0 observations. Results show that the blue and red lobes are strikingly different. We argue that ...
    • Alma observations of the massive molecular outflow G331.512-0.103 :|bphysical properties, kinematics, and geometry modeling 

      Hervias Caimapo, Carlos (Universidad de Chile, 2014)
      El flujo molecular, bipolar y masivo G331.512-0.103 es uno de los flujos más potentes y luminosos en nuestra Galaxia. Localizado a una distancia de ∼ 7.5 kpc, está localizado cerca de la tangente del brazo espiral de Norma. ...
    • ALMA reveals a candidate hot and compact disc around the O-type protostar IRAS 16547−4247 

      Zapata, Luis A.; Palau, Aina; Galván Madrid, Roberto; Rodríguez, Luis F.; Garay Brignardello, Guido; Morán, James M.; Franco Hernández, Ramiro (Oxford University Press, 2015)
      We present high angular resolution (similar to 0.3 arcsec) submillimeter continuum (0.85 mm) and line observations of the O-type protostar IRAS 16547-4247 carried out with the Atacama Large Millimeter/Submillimeter Array ...
    • ALMA Reveals Sequential High-mass Star Formation in the G9.62+0.19 Complex 

      Liu, Tie; Lacy, John; Li, Pak Shing; Wang, Ke; Qin, Sheng-Li; Zhang, Qizhou; Kim, Kee-Tae; Garay Brignardello, Guido; Wu, Yuefang; Mardones, Diego; Zhu, Qingfeng; Tatematsu, Ken'ichi; Hirota, Tomoya; Ren, Zhiyuan; Liu, Sheng-Yuan; Chen, Huei-Ru; Su, Yu-Nung; Li, Di (IOP Publishing Ltd, 2017)
      Stellar feedback from high-mass stars (e.g., H II regions) can strongly influence the surrounding interstellar medium and regulate star formation. Our new ALMA observations reveal sequential high-mass star formation taking ...
    • An Asymmetric Keplerian Disk Surrounding the O-type Protostar IRAS 16547-4247 

      Zapata, Luis A.; Garay Brignardello, Guido; Palau, Aina; Rodríguez, Luis F.; Fernández-López, Manuel; Estalella, Robert; Guzmán, Andres (Institute of Physics Publishing, 2019)
      © 2019. The American Astronomical Society. All rights reserved.. For the past few decades, there has been great interest in determining if even the most massive stars in our galaxy (namely the spectral O-type stars) are ...
    • An Ordered Envelope-Disk Transition in the Massive Protostellar Source G339.88-1.26 

      Zhang, Yichen; Tan, Jonathan C.; Sakai, Nami; Tanaka, Kei E.I.; De Buizer, James M.; Liu, Mengyao; Beltrán, Maria T.; Kratter, Kaitlin; Mardones, Diego; Garay Brignardello, Guido (Institute of Physics Publishing, 2019)
      © 2019. The American Astronomical Society.. We report molecular line observations of the massive protostellar source G339.88-1.26 with the Atacama Large Millimeter/Submillimeter Array. The observations reveal a highly ...
    • APEX Millimeter Observations of Methanol Emission Toward High-mass Star-forming Cores 

      Hernández-Hernández, Vicente; Kurtz, Stan; Kalenskii, Sergei; Golysheva, Polina; Garay Brignardello, Guido; Zapata, Luis; Bergman, Per (Institute of Physics Publishing, 2019)
      © 2019. The American Astronomical Society. All rights reserved..We present 247 GHz molecular line observations of methanol (CH3OH) toward 16 massive star-forming regions using the APEX telescope with an angular resolution ...
    • Assessing molecular outflows and turbulence in the protostellar cluster Serpens South 

      Plunkett, Adele; Arce, Héctor; Corder, Stuartt; Dunham, Michael; Garay Brignardello, Guido; Mardones Pérez, Diego (IOP Publishing, 2015)
      Molecular outflows driven by protostellar cluster members likely impact their surroundings and contribute to turbulence, affecting subsequent star formation. The very young Serpens South cluster consists of a particularly ...
    • Assessing Molecular Outflows and Turbulence in the Protostellar Cluster Serpens South 

      Plunkett, Adele L.; Arce, Héctor G.; Corder, Stuartt A.; Dunham, Michael M.; Garay Brignardello, Guido; Mardones Pérez, Diego (The American Astronomical Society., 2015-04-10)
      Molecular outflows driven by protostellar cluster members likely impact their surroundings and contribute to turbulence, affecting subsequent star formation. The very young Serpens South cluster consists of a particularly high ...
    • ATLASGAL – The APEX telescope large area survey of the galaxy at 870 μm 

      Schuller, F.; Menten, K. M.; Contreras, Y.; Wyrowski, F.; Schilke, P.; Bronfman Aguiló, Leonardo; Henning, Thomas; Walmsley, C. M.; Beuther, H.; Bontemps, S.; Cesaroni, R.; Deharveng, L.; Garay Brignardello, Guido; Herpin, F.; Lefloch, B.; Linz, H.; Mardones, D.; Minier, V.; Molinari, S.; Motte, F.; Nyman, L.-Å.; Reveret, V.; Risacher, C.; Russeil, D.; Schneider, N.; Testi, L.; Troost, T.; Vasyunina, T.; Wienen, M.; Zavagno, A.; Kovacs, A.; Kreysa, E.; Siringo, G.; Weiß, A. (ESO, 2009-02-20)
      Context. Thanks to its excellent 5100 m high site in Chajnantor, the Atacama Pathfinder Experiment (APEX) systematically explores the southern sky at submillimeter wavelengths, in both continuum and spectral line emission. ...
    • A (C-12)O survey of the Small Magellanic Cloud 

      Rubio López, Mónica; Garay Brignardello, Guido; Montani, J.; Thaddeus, P. (1991-02-10)
      The central 2 arcsec x 2 arcsec region of the SMC has been fully surveyed to search for (C-12)O emission in the J = 1-0 transition. (C-12)O emission from two large complexes located in the southwest and northeast regions ...
    • Características Dinámicas de los Núcleos Densos en las Regiones de Formación Estelar NGC 6334 y NGC 6357 

      Rebolledo Lara, David Andrés (Universidad de ChilePrograma Cybertesis, 2007)
      En esta tesis presento observaciones de la emisión en las líneas moleculares C8(2 -+ 1) y 13CO(2 -+ 1) hechas con el telescopio 8E8T, hacia las regiones de formación estelar NGC 6334 y NGC 6357. Observé un total de 68 ...
    • CE 315: a new interacting double-degenerate binary star 

      Ruiz González, María Teresa; Rojo Rubke, Patricio; Garay Brignardello, Guido; Maza Sancho, José (UNIV CHICAGO PRESS, 2001-05-10)
      We present spectroscopic observations of object CE 315 revealing a blue continuum with strong emission lines. Most of the detected lines are identified with He I or He II in emission, with a handful of faint lines of ...