Water content and wind acceleration in the envelope around the oxygen-rich AGB star IK Tauri as seen by Herschel/HIFI

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Search: WFRF:(de Koter A.) > Water content and w...

Details
MARC

Decin, L.Universiteit Van Amsterdam,University of Amsterdam,Katholieke Universiteit Leuven (author)

Water content and wind acceleration in the envelope around the oxygen-rich AGB star IK Tauri as seen by Herschel/HIFI

Article/chapterEnglish2010

Publisher, publication year, extent ...

2010-10-01
EDP Sciences,2010
electronicrdacarrier

Numbers

LIBRIS-ID:oai:research.chalmers.se:a7b877cd-8502-44e4-9aa7-4567576c10b2
https://doi.org/10.1051/0004-6361/201015069DOI
https://research.chalmers.se/publication/131149URI
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-51348URI

Supplementary language notes

Language:English
Summary in:English

Part of subdatabase

SwePubSwePub

Classification

Subject category:art swepub-publicationtype
Subject category:ref swepub-contenttype

Notes

authorCount :28
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 oxygen-rich asymptotic giant branch star IK Tau using the high-resolution HIFI spectrometer onboard Herschel. We report on the first detection of (H2O)-O-16 and the rarer isotopologues (H2O)-O-17 and (H2O)-O-18 in both the ortho and para states. We deduce a total water content (relative to molecular hydrogen) of 6.6 x 10(-5), and an ortho-to-para ratio of 3:1. These results are consistent with the formation of H2O in thermodynamical chemical equilibrium at photospheric temperatures, and does not require pulsationally induced non-equilibrium chemistry, vaporization of icy bodies or grain surface reactions. High-excitation lines of (CO)-C-12, (CO)-C-13, (SiO)-Si-28, (SiO)-Si-29, (SiO)-Si-30, HCN, and SO have also been detected. From the observed line widths, the acceleration region in the inner wind zone can be characterized, and we show that the wind acceleration is slower than hitherto anticipated.

Subject headings and genre

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
radiative transfer
submillimeter: stars
stars
w-hya
isotopic abundances
evolved
instrumentation: spectrographs
line: profiles
giant branch stars
stars: AGB and post-AGB
mass-loss history
line emission
co
circumstellar envelopes
circumstellar matter
carbon stars
vapor
Astronomy and astrophysics

Added entries (persons, corporate bodies, meetings, titles ...)

Justtanont, Kay,1965Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)justtano (author)
De Beck, Elvire,1985Katholieke Universiteit Leuven(Swepub:cth)elvire (author)
Lombaert, R.Katholieke Universiteit Leuven (author)
de Koter, A.Universiteit Van Amsterdam,University of Amsterdam (author)
Waters, LbfmUniversiteit Van Amsterdam,University of Amsterdam (author)
Marston, A. P.European Space Astronomy Centre (ESAC),Atacama Large Millimeter-submillimeter Array (ALMA) (author)
Teyssier, D.European Space Astronomy Centre (ESAC),Atacama Large Millimeter-submillimeter Array (ALMA) (author)
Schöier, Fredrik,1969Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)schoier (author)
Bujarrabal, V. (author)
Alcolea, J. (author)
Cernicharo, J.Centro de Astrobiologia (CAB) (author)
Dominik, C.Universiteit Van Amsterdam,University of Amsterdam,Radboud Universiteit,Radboud University (author)
Melnick, G. J.Harvard-Smithsonian Center for Astrophysics (author)
Menten, K.Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG) (author)
Neufeld, D. A.Johns Hopkins University (author)
Olofsson, Hans,1952Stockholms universitet,Institutionen för astronomi,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)hanolo (author)
Planesas, P.Atacama Large Millimeter-submillimeter Array (ALMA),Netherlands Institute for Space Research (SRON),California Institute of Technology (Caltech) (author)
Schmidt, M.Polish Academy of Sciences (author)
Szczerba, R.Polish Academy of Sciences (author)
de Graauw, T.Atacama Large Millimeter-submillimeter Array (ALMA) (author)
Helmich, F.Netherlands Institute for Space Research (SRON) (author)
Roelfsema, P.Netherlands Institute for Space Research (SRON) (author)
Dieleman, P.Netherlands Institute for Space Research (SRON) (author)
Morris, P.California Institute of Technology (Caltech) (author)
Gallego, J. D.Observatorio de Yebes (IGN),Yebes Observatory (author)
Diez-Gonzalez, M. C.Observatorio de Yebes (IGN),Yebes Observatory (author)
Caux, E.Institut National des Sciences de l'Univers,Université de Toulouse,University of Toulouse (author)
Universiteit Van AmsterdamKatholieke Universiteit Leuven (creator_code:org_t)

Related titles

In:Astronomy and Astrophysics: EDP Sciences521:1, s. Article Number: L4-0004-63611432-0746

Internet link

Find in a library

Astronomy and Astrophysics (Search for host publication in LIBRIS)

To the university's database

Find more in SwePub

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Astronomy Astrop ...

Articles in the publication: Astronomy and As ...

By the university: Chalmers University of Technology; Stockholm University

Search outside SwePub

Extend your search to:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se