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| DOI | 10.1088/2041-8205/727/2/L29 | ||||
| Año | 2011 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
We report the preliminary results of a survey for water vapor in a sample of eight C stars with large mid-IR continuum fluxes: V384 Per, CIT 6, V Hya, Y CVn, IRAS 15194-5115, V Cyg, S Cep, and IRC+40540. This survey, performed using the HIFI instrument on board the Herschel Space Observatory, entailed observations of the lowest transitions of both ortho-and para-water: the 556.936 GHz 1(10)-1(01) and 1113.343 GHz 1(11)-0(00) transitions, respectively. Water vapor was unequivocally detected in all eight of the target stars. Prior to this survey, IRC+10216 was the only carbon-rich asymptotic giant branch (AGB) star from which thermal water emissions had been discovered, in that case with the use of the Submillimeter Wave Astronomy Satellite (SWAS). Our results indicate that IRC+10216 is not unusual, except insofar as its proximity to Earth leads to a large line flux that was detectable with SWAS. The water spectral line widths are typically similar to those of CO rotational lines, arguing against the vaporization of a Kuiper Belt analog being the general explanation for water vapor in carbon-rich AGB stars. There is no apparent correlation between the ratio of the integrated water line fluxes to the 6.3 mu m continuum flux-a ratio which measures the water outflow rate-and the total mass-loss rate for the stars in our sample.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Neufeld, David A. | Hombre |
Johns Hopkins Univ - Estados Unidos
Johns Hopkins University - Estados Unidos |
| 2 | GONZALEZ-ALFONSO, EDUARDO | Hombre |
Univ Alcala De Henares - España
Universidad de Alcalá - España |
| 3 | Melnick, G. | - |
Harvard-Smithsonian Center for Astrophysics - Estados Unidos
Harvard Smithsonian CfA - Estados Unidos |
| 4 | Szczerba, R. | Hombre |
Nicholas Copernicus Astron Ctr - Polonia
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia N Copernicus Astron Ctr - Polonia |
| 5 | MORA-FERNANDEZ, ALCIONE | Hombre |
Nicholas Copernicus Astron Ctr - Polonia
Chalmers - Suecia Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia N Copernicus Astron Ctr - Polonia |
| 6 | Melnick, Gary | Hombre |
Harvard Smithsonian CfA - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos |
| 6 | Decin, L. | Hombre |
Katholieke Univ Leuven - Bélgica
Univ Amsterdam - Países Bajos Anton Pannekoek Instituut voor Sterrenkunde - Países Bajos |
| 7 | Alcolea, J. | Hombre |
Observ Astron Nacl IGN - España
Observatorio Astronomico Nacional - España |
| 8 | Sander, A. | Hombre |
Univ Amsterdam - Países Bajos
Univ Utrecht - Países Bajos Universiteit van Amsterdam - Países Bajos Sterrekundig Instituut Utrecht - Países Bajos Anton Pannekoek Instituut voor Sterrenkunde - Países Bajos Sterrenkundig Instituut Utrecht - Países Bajos |
| 9 | MORA-FERNANDEZ, ALCIONE | Hombre |
Nicholas Copernicus Astron Ctr - Polonia
Chalmers - Suecia Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences - Polonia N Copernicus Astron Ctr - Polonia |
| 10 | Bujarrabal, V. | Hombre |
Observ Astron Nacl IGN - España
Observatorio Astronomico Nacional - España |
| 11 | Cernicharo, Jose | Hombre |
CSIC - España
Centro de Astrobiología (CSIC-INTA) - España |
| 12 | Dominik, C. | Hombre |
Radboud Univ Nijmegen - Países Bajos
Univ Amsterdam - Países Bajos Universiteit van Amsterdam - Países Bajos Radboud University Nijmegen - Países Bajos Anton Pannekoek Instituut voor Sterrenkunde - Países Bajos Radboud Universiteit - Países Bajos |
| 13 | Justtanont, K. | - |
Chalmers - Suecia
Chalmers University of Technology, Onsala Space Observatory - Suecia Chalmers Univ Technol - Suecia Onsala Space Observatory - Suecia |
| 14 | Marston, A. | Hombre |
European Space Astron Ctr - España
European Space Astronomy Centre - España |
| 15 | Menten, K. M. | Hombre |
MPI Radioastron - Alemania
Max Planck Institute for Radio Astronomy - Alemania |
| 16 | Olofsson, H. | Hombre |
Chalmers - Suecia
Stockholm Univ - Suecia Chalmers University of Technology, Onsala Space Observatory - Suecia Stockholms universitet - Suecia Chalmers Univ Technol - Suecia Onsala Space Observatory - Suecia |
| 17 | Planesas, Pere | Hombre |
Observ Astron Nacl IGN - España
Atacama Large Millimeter Array - Chile Observatorio Astronomico Nacional - España Atacama Large Millimeter-submillimeter Array - Chile |
| 18 | Teyssier, D. | Hombre |
CSIC - España
Centro de Astrobiología (CSIC-INTA) - España |
| 19 | Waters, L. B. F. M. | Hombre |
Univ Amsterdam - Países Bajos
SRON Netherlands Inst Space Res - Países Bajos Universiteit van Amsterdam - Países Bajos SRON Netherlands Institute for Space Research - Países Bajos Anton Pannekoek Instituut voor Sterrenkunde - Países Bajos |
| Agradecimiento |
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| This research was performed, in part, through a JPL contract funded by the National Aeronautics and Space Administration. E.G.-A. is a Research Associate at the Harvard-Smithsonian Center for Astrophysics. R.S. and M.S. acknowledge support from grant N 203 581040. J.A. and V.B. have been supported by grant "ASTROMOL" (CSD2009-00038). |