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A high-speed bi-polar outflow from the archetypical pulsating star Mira A

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dc.contributor.author Redman, Matt P. en
dc.date.accessioned 2011-03-10T16:55:33Z en
dc.date.available 2011-03-10T16:55:33Z en
dc.date.issued 2009 en
dc.identifier.citation J. 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.uri http://hdl.handle.net/10379/1725 en
dc.description.abstract Optical 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.format application/pdf en
dc.language.iso en en
dc.subject Astrophysics - Galaxy Astrophysics en
dc.title A high-speed bi-polar outflow from the archetypical pulsating star Mira A en
dc.type Article en
dc.local.publishedsource http://arxiv.org/pdf/0903.1966 en
dc.description.peer-reviewed peer-reviewed en
dc.local.authors J. 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.arxivid 0903.1966 en

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