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Browsing by Author "Bujarrabal, V."

Browsing by Author "Bujarrabal, V."

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  • Discovery of water vapour in the carbon star V Cygni from observations with Herschel/HIFI 
    Neufeld, David A.; González-Alfonso, E.; Melnick, Gary J.; Pulecka, M.; Schmidt, M.; Szczerba, R.; Bujarrabal, V.; Alcolea, J.; Cernicharo, José; Decin, L.; Dominik, C.; Justtanont, K.; de Koter, A.; Marston, A. P.; Menten, Karl M.; Olofsson, H.; Planesas, P.; Schöier, F. L.; Teyssier, D.; Waters, L. B. F. M.; Edwards, K.; McCoey, C.; Shipman, R.; Jellema, W.; de Graauw, Th; Ossenkopf, V.; Schieder, R.; Philipp, S. (2010)
    We report the discovery of water vapour toward the carbon star V Cygni.
  • Gomez's Hamburger (IRAS 18059-3211): a pre main-sequence A-type star 
    Bujarrabal, V.; Young, K.; Fong, D. (2008)
  • Herschel/HIFI deepens the circumstellar NH<SUB>3</SUB> enigma 
    Menten, Karl M.; Wyrowski, F.; Alcolea, J.; de Beck, E.; Decin, L.; Marston, A. P.; Bujarrabal, V.; Cernicharo, José; Dominik, C.; Justtanont, K.; de Koter, A.; Melnick, Gary J.; Neufeld, David A.; Olofsson, H.; Planesas, P.; Schmidt, M.; Schöier, F. L.; Szczerba, R.; Teyssier, D.; Waters, L. B. F. M.; Edwards, K.; Olberg, M.; Phillips, Thomas G.; Morris, P.; Salez, M.; Caux, E. (2010)
    Context. Circumstellar envelopes (CSEs) of a variety of evolved stars have been found to contain ammonia (NH<SUB>3</SUB>) in amounts that exceed predictions from conventional chemical models by many orders of magnitude. ...
  • Herschel/HIFI observations of high-J CO transitions in the protoplanetary nebula CRL 618 
    Bujarrabal, V.; Alcolea, J.; Soria-Ruiz, R.; Planesas, P.; Teyssier, D.; Marston, A. P.; Cernicharo, José; Decin, L.; Dominik, C.; Justtanont, K.; de Koter, A.; Melnick, Gary J.; Menten, Karl M.; Neufeld, David A.; Olofsson, H.; Schmidt, M.; Schöier, F. L.; Szczerba, R.; Waters, L. B. F. M.; Quintana-Lacaci, G.; Güsten, R.; Gallego, J. D.; Díez-González, M. C.; Barcia, A.; López-Fernández, I.; Wildeman, K.; Tielens, A. G. G. M.; Jacobs, K. (2010)
    <br/> Aims: We aim to study the physical conditions, particularly the excitation state, of the intermediate-temperature gas components in the protoplanetary nebula CRL 618. These components are particularly important for ...
  • Herschel/HIFI observations of molecular emission in protoplanetary nebulae and young planetary nebulae 
    Bujarrabal, V.; Alcolea, J.; Soria-Ruiz, R.; Planesas, P.; Teyssier, D.; Cernicharo, J.; Decin, L.; Dominik, C.; Justtanont, K.; de Koter, A.; Marston, A. P.; Melnick, Gary J.; Menten, K. M.; Neufeld, D. A.; Olofsson, H.; Schmidt, M.; Schöier, F. L.; Szczerba, R.; Waters, L. B. F. M. (2012)
    <br/> Aims: We aim to study the physical conditions, particularly the excitation state, of the intermediate-temperature gas in protoplanetary nebulae and young planetary nebulae (PPNe, PNe). The information that the ...
  • Herschel/HIFI observations of O-rich AGB stars: molecular inventory 
    Justtanont, K.; Khouri, T.; Maercker, M.; Alcolea, J.; Decin, L.; Olofsson, H.; Schöier, F. L.; Bujarrabal, V.; Marston, A. P.; Teyssier, D.; Cernicharo, J.; Dominik, C.; de Koter, A.; Melnick, G.; Menten, K. M.; Neufeld, D.; Planesas, P.; Schmidt, M.; Szczerba, R.; Waters, R. (2012)
    <br/> Aims: Spectra, taken with the heterodyne instrument, HIFI, aboard the Herschel Space Observatory, of O-rich asymptotic giant branch (AGB) stars which form part of the guaranteed time key program HIFISTARS are presented. ...
  • A HIFI preview of warm molecular gas around ? Cygni: first detection of H<SUB>2</SUB>O emission toward an S-type AGB star 
    Justtanont, K.; Decin, L.; Schöier, F. L.; Maercker, M.; Olofsson, H.; Bujarrabal, V.; Marston, A. P.; Teyssier, D.; Alcolea, J.; Cernicharo, José; Dominik, C.; de Koter, A.; Melnick, Gary J.; Menten, Karl M.; Neufeld, David A.; Planesas, P.; Schmidt, M.; Szczerba, R.; Waters, R.; de Graauw, Th; Whyborn, N.; Finn, T.; Helmich, F.; Siebertz, O.; Schmülling, F.; Ossenkopf, V.; Lai, R. (2010)
    <br/> Aims: A set of new, sensitive, and spectrally resolved, sub-millimeter line observations are used to probe the warm circumstellar gas around the S-type AGB star ? Cyg. The observed lines involve high rotational quantum ...
  • HIFISTARS Herschel/HIFI observations of VY Canis Majoris. Molecular-line inventory of the envelope around the largest known star 
    Alcolea, J.; Bujarrabal, V.; Planesas, P.; Teyssier, D.; Cernicharo, J.; De Beck, E.; Decin, L.; Dominik, C.; Justtanont, K.; de Koter, A.; Marston, A. P.; Melnick, G.; Menten, K. M.; Neufeld, D. A.; Olofsson, H.; Schmidt, M.; Schöier, , F.L.; Szczerba, R.; Waters, L. B. F. M. (2013)
    <br/> Aims: The study of the molecular gas in the circumstellar envelopes of evolved stars is normally undertaken by observing lines of
  • Molecular remnant of Nova 1670 (CK Vulpeculae). II. A three-dimensional view of the gas distribution and velocity field 
    Kaminski, Tomasz; Steffen, W.; Bujarrabal, V.; Tylenda, R.; Menten, K. M.; Hajduk, M. (2021)
    CK Vul is the remnant of an energetic eruption known as Nova 1670 that is thought to be caused by a stellar merger. The remnant is composed of (1) a large hourglass nebula of recombining gas (of 71&#39;&#39; in size), very ...
  • A new radio molecular line survey of planetary nebulae. HNC/HCN as a diagnostic of ultraviolet irradiation 
    Bublitz, J.; Kastner, J. H.; Santander-García, M.; Bujarrabal, V.; Alcolea, J.; Montez, Rodolfo (2019)
    Certain planetary nebulae (PNe) contain shells, filaments, or globules of cold gas and dust whose heating and chemistry are likely driven by UV and X-ray emission from their central stars and from wind-collision-generated ...
  • The physical conditions in Gomez&#39;s Hamburger (IRAS 18059-3211), a pre-MS rotating disk 
    Bujarrabal, V.; Young, K.; Castro-Carrizo, A. (2009)
  • Polarisation observations of VY Canis Majoris H<SUB>2</SUB>O 5<SUB>32</SUB>- 4<SUB>41</SUB> 620.701 GHz maser emission with HIFI 
    Harwit, M.; Houde, M.; Sonnentrucker, P.; Boogert, Adwin; Cernicharo, José; de Beck, E.; Decin, L.; Henkel, C.; Higgins, R. D.; Jellema, W.; Kraus, A.; McCoey, C.; Melnick, Gary J.; Menten, Karl M.; Risacher, C.; Teyssier, D.; Vaillancourt, J. E.; Alcolea, J.; Bujarrabal, V.; Dominik, C.; Justtanont, K.; de Koter, A.; Marston, A. P.; Olofsson, H.; Planesas, P.; Schmidt, M.; Schöier, F. L.; Szczerba, R.; Waters, L. B. F. M. (2010)
    Context. Water vapour maser emission from evolved oxygen-rich stars remains poorly understood. Additional observations, including polarisation studies and simultaneous observation of different maser transitions may ultimately ...
  • Water content and wind acceleration in the envelope around the oxygen-rich AGB star IK Tauri as seen by Herschel/HIFI 
    Decin, L.; Justtanont, K.; de Beck, E.; Lombaert, R.; de Koter, A.; Waters, L. B. F. M.; Marston, A. P.; Teyssier, D.; Schöier, F. L.; Bujarrabal, V.; Alcolea, J.; Cernicharo, José; Dominik, C.; Melnick, Gary J.; Menten, Karl M.; Neufeld, David A.; Olofsson, H.; Planesas, P.; Schmidt, M.; Szczerba, R.; de Graauw, Th; Helmich, F.; Roelfsema, P.; Dieleman, P.; Morris, P.; Gallego, J. D.; Díez-González, M. C.; Caux, E. (2010)
    During their asymptotic giant branch evolution, low-mass stars lose a significant fraction of their mass through an intense wind, enriching the interstellar medium with products of nucleosynthesis. We observed the nearby ...
  • The Widespread Occurrence of Water Vapor in the Circumstellar Envelopes of Carbon-Rich Asymptotic Giant Branch Stars: First Results from a Survey with Herschel/HIFI 
    Neufeld, David A.; González-Alfonso, E.; Melnick, Gary J.; Szczerba, R.; Schmidt, M.; Decin, L.; Alcolea, J.; de Koter, A.; Schöier, F. L.; Bujarrabal, V.; Cernicharo, José; Dominik, C.; Justtanont, K.; Marston, A. P.; Menten, Karl M.; Olofsson, H.; Planesas, P.; Teyssier, D.; Waters, L. B. F. M. (2011)
  • The wind of W Hydrae as seen by Herschel. I. The CO envelope 
    Khouri, T.; de Koter, A.; Decin, L.; Waters, L. B. F. M.; Lombaert, R.; Royer, P.; Swinyard, B.; Barlow, M. J.; Alcolea, J.; Blommaert, J. A. D. L.; Bujarrabal, V.; Cernicharo, J.; Groenewegen, M. A. T.; Justtanont, K.; Kerschbaum, F.; Maercker, M.; Marston, A.; Matsuura, M.; Melnick, G.; Menten, K. M.; Olofsson, H.; Planesas, P.; Polehampton, E.; Posch, Th; Schmidt, M.; Szczerba, R.; Vandenbussche, B.; Yates, J. (2014)
    Context. Asymptotic giant branch (AGB) stars lose their envelopes by means of a stellar wind whose driving mechanism is not understood well. Characterizing the composition and thermal and dynamical structure of the outflow ...

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