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dc.contributor.authorMeaburn, J.
dc.contributor.authorLópez, J. A.
dc.contributor.authorBoumis, P.
dc.contributor.authorLloyd, M.
dc.contributor.authorRedman, M. P.
dc.date.accessioned2018-09-20T16:17:33Z
dc.date.available2018-09-20T16:17:33Z
dc.date.issued2009-04-29
dc.identifier.citationMeaburn, J. López, J. A.; Boumis, P.; Lloyd, M.; Redman, M. P. (2009). A high-speed bipolar outflow from the archetypical pulsating star mira a. Astronomy & Astrophysics 500 (2), 827-831
dc.identifier.issn0004-6361,1432-0746
dc.identifier.urihttp://hdl.handle.net/10379/12858
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-ultraviolet (FUV) GALEX images, have now been imaged clearly in the light of Ha. Spatially resolved profiles of the same line reveal that the bulk of these knots form a bipolar outflow with radial velocity extremes of +/- 150 km s(-1) 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 Ha image and its position in the previous Palomar Observatory Sky Survey (POSS I) red plate was noted. If interpreted as a consequence of expansion proper motions, the bipolar outflow is tilted at 69 degrees +/- 15 degrees to the plane of the sky, has an outflow velocity of 160 +/- 10 km s(-1) and is approximate to 1000 y old.
dc.publisherEDP Sciences
dc.relation.ispartofAstronomy & Astrophysics
dc.subjectstars: circumstellar matter
dc.subjectstars: variables: general
dc.subjectstars: binaries: general
dc.subjectstars: individual: mira
dc.subjectplanetary-nebula ngc-6302
dc.subjecthubble-type outflows
dc.subjectmass-loss history
dc.subjectechelle spectrometer
dc.subjecthigh-excitation
dc.subjectp-cygni
dc.subjecttail
dc.subjecttelescope
dc.titleA high-speed bipolar outflow from the archetypical pulsating star mira a
dc.typeArticle
dc.identifier.doi10.1051/0004-6361/200911785
dc.local.publishedsourcehttps://www.aanda.org/articles/aa/pdf/2009/23/aa11785-09.pdf
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