Now showing items 1-20 of 122

    • A comparison of density structures of a star forming and a non-star-forming globule - DCld303.8-14.2 and Thumbprint Nebula 

      Kainulainen, J.; Lehtinen, K.; Väisänen, P.; Bronfman Aguiló, Leonardo; Knude, J. (EDP SCIENCES S A, 2007-03)
      We present a study of radial density structure of the star forming globule, DCld303.8-14.2 (DC303), and a non-star forming globule, Thumbprint Nebula (TPN), using near-infrared data taken with the ISAAC instrument on the ...
    • A FPGA-based fast converging digital adaptive filter for real time RFI mitigation on ground based radio telescopes 

      Finger Camus, Ricardo; Curotto, F.; Fuentes, R.; Duan, R.; Bronfman Aguiló, Leonardo; Li, D. (IOP Publishing Ltd, 2018)
      Radio Frequency Interference (RFI) is a growing concern in the radio astronomy community. Single-dish telescopes are particularly susceptible to RFI. Several methods have been developed to cope with RF-polluted environments, ...
    • A gallery of bubbles The nature of the bubbles observed by Spitzer and what ATLASGAL tells us about the surrounding neutral material 

      Deharveng, L.; Schuller, F.; Anderson, L. D.; Zavagno, A.; Wyrowski, F.; Menten, K. M.; Bronfman Aguiló, Leonardo; Testi, L.; Walmsley, C. M.; Wienen, M. (2010-12)
      Context. This study deals with infrared bubbles, the H II regions they enclose, and triggered massive-star formation on their borders. Aims. We attempt to determine the nature of the bubbles observed by Spitzer in the ...
    • A large scale CO survey of the Galactic center region 

      Bitrán, M.; Álvarez Moreno, Héctor Julio; Bronfman Aguiló, Leonardo; May Humeres, Jorge; Thaddeus, P. (1997-10)
      We present the data from a CO(J = 1 --> 0) survey of the central region of our Galaxy. The observations were obtained with the 1.2-m Southern Millimeter-wave Telescope at Cerro Tololo Interamerican Observatory, Chile. This ...
    • 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 ...
    • 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 observations of the Th 28 protostellar disk A new example of counter-rotation between disk and optical jet 

      Louvet, Fabien; Dougados, Catherine; Cabrit, S.; Hales, A.; Pinte, Christophe; Ménard, F.; Bacciotti, F.; Coffey, D.; Mardones Pérez, Diego; Bronfman Aguiló, Leonardo; Gueth, F. (EDP Sciences, 2016)
      Aims. Recently, differences in Doppler shifts across the base of four close classical T Tauri star jets have been detected with the HST in optical and near-ultraviolet (NUV) emission lines, and these Doppler shifts were ...
    • ALMA survey of massive cluster progenitors from ATLASGAL: Limited fragmentation at the early evolutionary stage of massive clumps 

      Csengeri, T.; Bontemps, S.; Wyrowski, F.; Motte, F.; Menten, K. M.; Beuther, H.; Bronfman Aguiló, Leonardo; Commerçon, B.; Chapillón, E.; Duarte Cabral, A.; Fuller, G. A.; Henning, Th; Leurini, S.; Longmore, S.; Palau, A.; Peretto, N.; Schuller, F.; Tan, J. C.; Testi, L.; Traficante, A.; Urquhart, J. S. (EDP Sciences, 2017)
      The early evolution of massive cluster progenitors is poorly understood. We investigate the fragmentation properties from 0.3 pc to 0.06 pc scalesof a homogenous sample of infrared-quiet massive clumps within 4.5 kpc ...
    • Anomalous radio emission from dust in the Helix 

      Casassus Montero, Simón; Readhead, A. C. S.; Pearson, T. J.; Nyman, L. A.; Shepherd, M. C.; Bronfman Aguiló, Leonardo (UNIV CHICAGO PRESS, 2004-03-10)
      A by-product of experiments designed to map the cosmic microwave background is the recent detection of a new component of foreground Galactic emission. The anomalous foreground at similar to 10 - 30 GHz, unexplained by ...
    • ATLASGAL - compact source catalogue: 330 degrees < l < 21 degrees 

      Contreras, Y.; Schuller, F.; Urquhart, J. S.; Csengeri, T.; Wyrowski, F.; Beuther, H.; Bontemps, S.; Bronfman Aguiló, Leonardo; Henning, Thomas; Menten, K. M.; Schilke, P.; Walmsley, C. M.; Wienen, M.; Tackenberg, J.; Linz, H. (EDP Sciences, 2012-10-24)
      Context. The APEX Telescope Large Area Survey of the GALaxy (ATLASGAL) is the first systematic survey of the inner Galactic plane in the sub-millimetre. The observations were carried out with the Large APEX Bolometer Camera ...
    • ATLASGAL - Complete compact source catalogue: 280°<ℓ< 60° 

      Urquhart, J. S.; Csengeri, T.; Wyrowski, F.; Schuller, F.; Bontemps, S.; Bronfman Aguiló, Leonardo; Menten, K. M.; Walmsley, C. M.; Contreras, Y.; Beuther, H.; Wienen, M.; Linz, H. (EDP Sciences, 2014)
      Context. The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) is the largest and most sensitive systematic survey of the inner Galactic plane in the submillimetre wavelength regime. The observations were carried ...
    • ATLASGAL - environments of 6.7 GHz methanol masers 

      Urquhart, J. S.; Moore, T. J. T.; Schuller, F.; Wyrowski, F.; Menten, K. M.; Thompson, M. A.; Csengeri, T.; Walmsley, C. M.; Bronfman Aguiló, Leonardo; König, C. (Oxford University Press on behalf of the Royal Astronomical Society, 2013-03-12)
      Using the 870 mu m APEX Telescope large area survey of the Galaxy, we have identified 577 submillimetre continuum sources with masers from the methanol multibeam survey in the region 280 degrees < l < 20 degrees; vertical ...
    • ATLASGAL - Kinematic distances and the dense gas mass distribution of the inner Galaxy 

      Wienen, M.; Wyrowski, F.; Menten, K. M.; Urquhart, J. S.; Csengeri, T.; Walmsley, C. M.; Bontemps, S.; Russeil, D.; Bronfman Aguiló, Leonardo; Koribalski, B. S.; Schuller, F. (EDP Sciences, 2015)
      Context. The formation of high mass stars and clusters occurs in giant molecular clouds. Objects in evolved stages of massive star formation such as protostars, hot molecular cores, and ultracompact HII regions have been ...
    • The ATLASGAL survey: a catalog of dust condensations in the Galactic plane 

      Csengeri, T.; Urquhart, S.; Schuller, F.; Motte, F.; Bontemps, S.; Wyrowski, F.; Menten, K. M.; Bronfman Aguiló, Leonardo; Beuther, H.; Henning, Thomas; Testi, L.; Zavagno, A.; Walmsley, M. (2014)
      Context. The formation processes and the evolutionary stages of high-mass stars are poorly understood compared to low-mass stars. Large-scale surveys are needed to provide an unbiased census of high column density sites ...
    • The ATLASGAL survey: distribution of cold dust in the Galactic plane Combination with Planck data 

      Csengeri, T.; Weiss, A.; Wyrowski, F.; Menten, K.; Urquhart, J.; Leurini, S.; Schuller, F.; Beuther, H.; Bontemps, S.; Bronfman Aguiló, Leonardo; Henning, Thomas; Schneider, N. (EDP SCIENCES, 2016)
      Context. Sensitive ground-based submillimeter surveys, such as ATLASGAL, provide a global view on the distribution of cold dense gas in the Galactic plane at up to two-times better angular-resolution compared to recent ...
    • ATLASGAL – properties of compact H II regions and their natal clumps 

      Urquhart, J.; Thompson, M.; Moore, T.; Purcell, C. R.; Hoare, M.; Schuller, F.; Wyrowski, F.; Csengeri, T.; Menten, K.; Lumsden, S. L.; Kurtz, S.; Walmsley, C. M.; Bronfman Aguiló, Leonardo; Morgan, L.; Eden, D.; Russeil, D. (Royal Astronomical Society, 2013-08-19)
      We present a complete sample of molecular clumps containing compact and ultracompact H II (UC H II) regions between = 10◦ and 60◦ and |b| < 1◦, identified by combining the APEX Telescope Large Area Survey of the Galaxy ...
    • 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, G.; 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. ...
    • ATLASGAL – towards a complete sample of massive star forming clumps 

      Urquhart, James; Moore, Toby; Csengeri, Timea; Wyrowski, Friedrich; Schuller, Frederic; Hoare, Melvin G.; Lumsden, Stuart; Mottran, Josep; Thompson, Mark; Menten, Karl; Walmsley, C. M.; Bronfman Aguiló, Leonardo; Pfalzner, Susana; König, Carsten; Wienen, Marion (Royal Astronomical Society, 2014)
      By matching infrared-selected, massive young stellar objects (MYSOs) and compact H II regions in the Red MSX Source survey to massive clumps found in the submillimetre ATLASGAL (APEX Telescope Large Area Survey of the ...
    • Atomic carbon in the southern Milky Way 

      Oka, Tomoharu; Kamegai, Kazuhisa; Hayashida, Masaaki; Nagai, Makoto; Ikeda, Masafumi; Kuboi, Nobuyuki; Tanaka, Kunihiko; Bronfman Aguiló, Leonardo; Yamamoto, Satoshi (UNIV CHICAGO PRESS, 2005-04-20)
      We present a coarsely sampled longitude-velocity (l-V) map of the region l = 300 degrees - 354 degrees, b = 0 degrees in the 492 GHz fine-structure transition of neutral atomic carbon (C-0 P-3(1) - P-3(0); [C I]), observed ...
    • Automatización de un Radiómetro para Medir la Opacidad Atmosférica a 115 GHZ 

      Ramos Oliver, Nicolás Esteban (Universidad de ChilePrograma Cybertesis, 2009)
      Desde 1983 la Universidad de Chile, en colaboración con la Universidad de Harvard, opera en el Observatorio Interamericano de Cerro Tololo – La Serena, Chile – un radiotelescopio a 115 [GHz]. Este receptor, conocido como ...