Sökning: id:"swepub:oai:DiVA.org:uu-337756" > Rings and filaments :
Fältnamn | Indikatorer | Metadata |
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000 | 05576naa a2200565 4500 | |
001 | oai:DiVA.org:uu-337756 | |
003 | SwePub | |
008 | 180112s2017 | |||||||||||000 ||eng| | |
009 | oai:research.chalmers.se:8f699a34-345c-4056-ba73-9e2ca43e8fc6 | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3377562 URI |
024 | 7 | a https://doi.org/10.1051/0004-6361/2017306652 DOI |
024 | 7 | a https://research.chalmers.se/publication/2529682 URI |
040 | a (SwePub)uud (SwePub)cth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Kerschbaum, F.u Univ Vienna, Dept Astrophys,Universität Wien,University of Vienna4 aut |
245 | 1 0 | a Rings and filaments :b The remarkable detached CO shell of U Antliae |
264 | c 2017-09-20 | |
264 | 1 | b 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 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
650 | 7 | a 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 | |
700 | 1 | 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 |
700 | 1 | a Brunner, M.u Univ Vienna, Dept Astrophys4 aut |
700 | 1 | 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 |
700 | 1 | 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 |
700 | 1 | a Mecina, M.u Univ Vienna, Dept Astrophys4 aut |
700 | 1 | 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 |
700 | 1 | a Groenewegen, M. A. T.u Koninklijke Sterrenwacht van Belgie4 aut |
700 | 1 | a Lagadec, E.u Univ Cote Azur, Observ Cote Azur, Lab Lagrange, CNRS,Bd Observ,Observatoire de la Cote d'Azur4 aut |
700 | 1 | 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 |
700 | 1 | a Paladini, C.u Univ Libre Bruxelles, Inst Astron & Astrophys, Campus Plaine CP 226,Université libre de Bruxelles (ULB)4 aut |
700 | 1 | a Ramstedt, Sofiau Uppsala universitet,Teoretisk astrofysik,Uppsala University4 aut0 (Swepub:uu)sofra336 |
700 | 1 | 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 |
700 | 1 | a Wittkowski, M.u European Southern Observ, Karl Schwarzschild Str 24 aut |
710 | 2 | a Univ Vienna, Dept Astrophysb Universität Wien4 org |
773 | 0 | t Astronomy and Astrophysicsd : EDP Sciencesg 605q 605x 0004-6361x 1432-0746 |
856 | 4 | u https://www.aanda.org/articles/aa/pdf/2017/09/aa30665-17.pdf |
856 | 4 | u http://publications.lib.chalmers.se/records/fulltext/252968/local_252968.pdfx primaryx freey FULLTEXT |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-337756 |
856 | 4 8 | u https://doi.org/10.1051/0004-6361/201730665 |
856 | 4 8 | u https://research.chalmers.se/publication/252968 |
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