Now showing items 1-17 of 17

    • 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 ...
    • 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 ...
    • Compact ammonia sources toward the G10.5 + 0.0 H II region complex 

      Garay Brignardello, Guido; Moran, James M.; Rodríguez, Luis F. (1993-08-20)
      We present observations of the (2, 2) and (3, 3) inversion transitions of ammonia toward a group of compact H II regions near l = 10-degrees.5, b = 0-degrees.0, made at 4'' resolution using the VLA. We detected three ...
    • The compact molecular core toward G34.3 + 0.2 - VLA observations in the (2,2) and (3,3) lines of ammonia 

      Garay Brignardello, Guido; Rodríguez, Luis F. (1990-10-10)
      The VLA was used to map the NH3 emission in the lines of the (J,K) = (2,2) and (J,K) = (3,3) inversion transitions toward the warm molecular cloud associated with the compact H II region G34.3 + 0.2. The main HF line of ...
    • Continuum observations at 3 and 12 mm of the high-mass protostellar jet iras 16547_4247 

      Brooks, Kate J.; Garay Brignardello, Guido; Voronkov, Maxim; Rodríguez, Luis F. (2007-11-01)
      Continuumdata at 25 and 88 GHz toward the luminous young stellar object IRAS 16547 4247 (G343.126 0.062) have been obtained with the Australia Telescope Compact Array. The triple emission source identified previously ...
    • The dense molecular envelope around the compact H II region G5.89 - 0.39 (W28 A2) 

      Gómez, Yolanda; Rodríguez, Luis F.; Garay Brignardello, Guido; Moran, James M. (The American Astronomical Society, 1991-08-20)
      VLA observations of ammonia in the (J, K) = (2, 2) and (3, 3) inversion transitions toward the compact H II region G5.89 - 0.39 are presented. These observations reveal the presence of a massive and hot molecular envelope ...
    • Detection of a candidate for the exciting source of the expanding water maser bubble in Cepheus A 

      Curiel, Salvador; Trinidad, Miguel A.; Cantó, Jorge; Rodríguez, Luis F.; Torrelles, José M.; Ho, Paul T. P.; Patel, Nimesh A.; Greenhill, Lincoln; Gómez, José F.; Garay Brignardello, Guido; Hernández, Liliana; Contreras, María E.; Anglada Escudé, Guillem (2002-06-01)
      We report sensitive, high angular resolution VLA 3.6 cm and 7 mm continuum observations toward the starforming region Cepheus A. Three embedded young stellar objects (YSOs) were found within a projected area of 0 .6#0 ...
    • Disk and outflow in Cepheus A-HW2: Interferometric SiO and HCO+ observations 

      Gómez, José F.; Sargent, Anneila I.; Torreles, José M.; Ho, Paul T. P.; Rodríguez, Luis F.; Cantó, Jorge; Garay Brignardello, Guido (1999-03-20)
      j\3.4 mm toward the Cepheus A East star-forming region. The HCO` line shows emission up to velocities of D50 km s~1 relative to the ambient cloud velocity. The spatial distribution of the highvelocity gas is bipolar, ...
    • The distance to NGC 6302 

      Gómez, Yolanda; Moran, James M.; Rodríguez, Luis F.; Garay Brignardello, Guido (The American Astronomical Society, 1988-10-15)
      New 6 cm continuum and radio recombination line VLA observations as well as CO observations are presented of the bright PN NGC 6302. The H110-alpha line is significantly broader than the H76-alpha line, an effect which is ...
    • Methanol and silicon monoxide observations toward bipolar outflows associated with Class 0 objects 

      Garay Brignardello, Guido; Mardones Pérez, Diego; Rodríguez, Luis F.; Caselli, Paola; Bourke, Tyler L. (2002-03-10)
      We report Swedish-ESO Submillimetre Telescope observations of seven bipolar outÑows thought to be associated with Class 0 objects in the t\0 J\3]2 and J\2]1 transitions of SiO and Jk\ 3k and transitions of Methanol and ...
    • The Nature of the Radio Sources within the Cepheus A Star-forming Region 

      Garay Brignardello, Guido; Ramírez, Solange; Rodríguez, Luis F.; Curiel, Salvador; Torelles, José M. (1996-03-01)
      We present multifrequency, matching-beam, VLA radio continuum observations of the Cep A East radio source, known to consist of 16 compact ( 1") components clustered within a 25" radius region, most of which are aligned in ...
    • A protostellar jet emanating from a hypercompact H II region 

      Guzmán, Andrés E.; Garay Brignardello, Guido; Rodríguez, Luis F.; Contreras, Yanett; Dougados, Catherine; Cabrit, Sylvie (The American Astronomical Society, 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 ...
    • The rotating molecular structures and the ionized outflow associated with iras 16547−4247 

      Franco Hernández, Ramiro; Moran, James M.; Rodríguez, Luis F.; Garay Brignardello, Guido (2009-08-20)
      We present Very Large Array 1.3 cm radio continuum and water maser observations as well as Submillimeter Array SO2 (226.300 GHz) and 1.3 mm dust continuum observations toward the massive star formation region IRAS ...
    • Systems with H2O maser and 1.3 centimeter continuum emission in Cepheus A 

      Torrelles, José M.; Gómez, José F.; Garay Brignardello, Guido; Rodríguez, Luis F.; Curiel, Salvador; Cohen, R. Jim; Ho, Paul T. P. (1998-12-10)
    • The circumstellar structure and excitation effects around the massive protostar Cepheus A HW 2 

      Torrelles, J. M.; Patel, N. A.; Curiel, S.; Ho, P. T. P.; Garay Brignardello, Guido; Rodríguez, Luis F. (2007)
      We report SMA 335 GHz continuum observations with angular resolution of similar to 0.3'', together with VLA ammonia observations with similar to 1'' resolution toward Cep A HW 2. We find that the flattened disk structure ...
    • Very large array observations of candidate high-mass protostellar objects at 7 millimeters 

      Garay Brignardello, Guido; Rodríguez, Luis F.; De Gregorio Monsalvo, Itziar (2007)
      We present radio-continuum observations at 7 mm made using the Very Large Array toward three massive star-forming regions thought to be in very early stages of evolution, selected from the 2002 sample of Sridharan et al. ...
    • VLBA DETERMINATION OF THE DISTANCE TO NEARBY STAR-FORMING REGIONS. V. DYNAMICAL MASS, DISTANCE, AND RADIO STRUCTURE OF V773 Tau A 

      Torres, Rosa M.; Loinard, Laurent; Mioduszewski, Amy J.; Boden, Andrew F.; Franco Hernández, Ramiro; Vlemmings, Wouter H. T.; Rodríguez, Luis F. (2012-01-01)
      We present multi-epoch Very Long Baseline Array (VLBA) observations of V773 Tau A, the 51 day binary subsystem in the multiple young stellar system V773 Tau. Combined with previous interferometric and radial velocity ...