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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005576naa a2200565 4500
001oai:DiVA.org:uu-337756
003SwePub
008180112s2017 | |||||||||||000 ||eng|
009oai:research.chalmers.se:8f699a34-345c-4056-ba73-9e2ca43e8fc6
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3377562 URI
0247 a https://doi.org/10.1051/0004-6361/2017306652 DOI
0247 a https://research.chalmers.se/publication/2529682 URI
040 a (SwePub)uud (SwePub)cth
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Kerschbaum, F.u Univ Vienna, Dept Astrophys,Universität Wien,University of Vienna4 aut
2451 0a Rings and filaments :b The remarkable detached CO shell of U Antliae
264 c 2017-09-20
264 1b EDP Sciences,c 2017
338 a print2 rdacarrier
500 a Acknowledgements: F.K. and M.B. acknowledge funding by the Austrian Science Fund FWF under project number P23586. M.B. further acknowledges funding through the uni: docs fellowship of the University of Vienna. M.M., H.O., and W.V. acknowledge financial support from the Swedish Research Council. C.P. is supported by the Belgian Fund for Scientific Research F.R.S.-FNRS.
520 a Aims. Our goal is to characterize the intermediate age, detached shell carbon star U Antliae morphologically and physically in order to study the mass-loss evolution after a possible thermal pulse.Methods. High spatial resolution ALMA observations of unprecedented quality in thermal CO lines allow us to derive first critical spatial and temporal scales and constrain modeling efforts to estimate mass-loss rates for both the present day as well as the ejection period of the detached shell.Results. The detached shell is remarkably thin, overall spherically symmetric, and shows a barely resolved filamentary substructure possibly caused by instabilities in the interaction zone of winds with different outflow velocities. The expansion age of the detached shell is of the order of 2700 yr and its overall width indicates a high expansion-velocity and high mass-loss period of only a few hundred years at an average mass-loss rate of approximate to 10(-5) M-circle dot yr(-1). The post-high-mass-loss-rate-epoch evolution of U Ant shows a significant decline to a substantially lower gas expansion velocity and a mass-loss rate amounting to 4 x 10(-8) M-circle dot yr(-1), at present being consistent with evolutionary changes as predicted for the period between thermal pulses.
650 7a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
653 a stars: AGB and post-AGB
653 a stars: carbon
653 a stars: evolution
653 a stars: mass-loss
7001 a Maercker, Matthias,d 1979u Chalmers Univ Technol, Dept Earth & Space Sci, Onsala Space Observ,Chalmers tekniska högskola,Chalmers University of Technology,Universität Wien,University of Vienna,Royal Observatory of Belgium,European Southern Observatory (ESO),Univ Vienna, Dept Astrophys,Koninklijke Sterrenwacht van Belgie,European Southern Observ, Karl Schwarzschild Str 24 aut0 (Swepub:cth)maercker
7001 a Brunner, M.u Univ Vienna, Dept Astrophys4 aut
7001 a Lindqvist, Michael,d 1960u Chalmers Univ Technol, Dept Earth & Space Sci, Onsala Space Observ,Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)mlq
7001 a Olofsson, Hans,d 1952u Chalmers Univ Technol, Dept Earth & Space Sci, Onsala Space Observ,Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)hanolo
7001 a Mecina, M.u Univ Vienna, Dept Astrophys4 aut
7001 a De Beck, Elvire,d 1985u Chalmers Univ Technol, Dept Earth & Space Sci, Onsala Space Observ,Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)elvire
7001 a Groenewegen, M. A. T.u Koninklijke Sterrenwacht van Belgie4 aut
7001 a Lagadec, E.u Univ Cote Azur, Observ Cote Azur, Lab Lagrange, CNRS,Bd Observ,Observatoire de la Cote d'Azur4 aut
7001 a Mohamed, S.u South African Astron Observ.; Univ Cape Town, Dept Astron.; Natl Inst Theoret Phys, Private Bag X1,National Institute for Theoretical Physics,South African Astronomical Observatory,University of Cape Town4 aut
7001 a Paladini, C.u Univ Libre Bruxelles, Inst Astron & Astrophys, Campus Plaine CP 226,Université libre de Bruxelles (ULB)4 aut
7001 a Ramstedt, Sofiau Uppsala universitet,Teoretisk astrofysik,Uppsala University4 aut0 (Swepub:uu)sofra336
7001 a Vlemmings, Wouter,d 1974u Chalmers Univ Technol, Dept Earth & Space Sci, Onsala Space Observ,Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)wouterv
7001 a Wittkowski, M.u European Southern Observ, Karl Schwarzschild Str 24 aut
7102 a Univ Vienna, Dept Astrophysb Universität Wien4 org
7730 t Astronomy and Astrophysicsd : EDP Sciencesg 605q 605x 0004-6361x 1432-0746
8564 u https://www.aanda.org/articles/aa/pdf/2017/09/aa30665-17.pdf
8564 u http://publications.lib.chalmers.se/records/fulltext/252968/local_252968.pdfx primaryx freey FULLTEXT
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-337756
8564 8u https://doi.org/10.1051/0004-6361/201730665
8564 8u https://research.chalmers.se/publication/252968

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