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dc.contributor.authorRedman, Matt P.en
dc.date.accessioned2011-03-10T16:55:33Zen
dc.date.available2011-03-10T16:55:33Zen
dc.date.issued2009en
dc.identifier.citationJ. Meaburn (1), J. A. Lopez (2), P. Boumis (3), M. Lloyd (1), M. P. Redman (4)...(2009)A high-speed bi-polar outflow from the archetypical pulsating star Mira A,en
dc.identifier.urihttp://hdl.handle.net/10379/1725en
dc.description.abstractOptical images and high-dispersion spectra have been obtained of the ejected material surrounding the pulsating AGB star Mira A. The two streams of knots on either side of the star, found in far ultra-viollet (FUV) GALEX images, have now been imaged clearly in the light of Halpha. Spatially resolved profiles of the same line reveal that the bulk of these knots form a bi-polar outflow with radial velocity extremes of +- 150 km/s with respect to the central star. The South stream is approaching and the North stream receding from the observer. A displacement away from Mira A between the position of one of the South stream knots in the new Halpha image and its position in the previous Palomar Observatory Sky Survey (POSS I) red plate has been noted. If interpreted as a consequence of expansion proper motions the bipolar outflow is tilted at 69deg +- 2deg to the plane of the sky, has an outflow velocity of 160 +- 10 km/s and is ~1000 y old.en
dc.formatapplication/pdfen
dc.language.isoenen
dc.subjectAstrophysics - Galaxy Astrophysicsen
dc.titleA high-speed bi-polar outflow from the archetypical pulsating star Mira Aen
dc.typeArticleen
dc.local.publishedsourcehttp://arxiv.org/pdf/0903.1966en
dc.description.peer-reviewedpeer-revieweden
dc.local.authorsJ. Meaburn (1), J. A. Lopez (2), P. Boumis (3), M. Lloyd (1), M. P. Redman (4) ((1) Jodrell Bank Centre for Astrophysics, University of Manchester, UK, (2) Instituto de Astronomia, UNAM, Ensenada, Mexico (3) Institute of Astronomy & Astrophysics, National Observatory of Athens, Greece, (4) Centre for Astronomy, National University of Ireland, Galway, Ireland)en
dc.local.arxivid0903.1966en
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