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dc.contributor.authorRedman, Matt P.en
dc.identifier.citationP. Boumis (1), J. Meaburn (1,2), J. Alikakos (1,3), M. P. Redman (4), S. Akras...(2007)Deep optical observations of the interaction of the SS 433 microquasar jet with the W 50 radio continuum shell,en
dc.description.abstractFour mosaics of deep, continuum-subtracted, CCD images have been obtained over the extensive galactic radio continuum shell, W 50, which surrounds the remarkable stellar system SS 433. Two of these mosaics in the Halpha+[N II] and [O III] 5007 A emission lines respectively cover a field of ~2.3 x 2.5 degr^2 which contains all of W 50 but at a low angular resolution of 5 arcsec. The third and fourth mosaics cover the eastern (in [O III] 5007 A) and western (in Halpha+[N II]) filamentary nebulosity respectively but at an angular resolution of 1 arcsec. These observations are supplemented by new low dispersion spectra and longslit, spatially resolved echelle spectra. The [O III] 5007 A images show for the first time the distribution of this emission in both the eastern and western filaments while new Halpha+[N II] emission features are also found in both of these regions. Approaching flows of faintly emitting material from the bright eastern filaments of up 100 km/s in radial velocity are detected. The present observations also suggest that the heliocentric systemic radial velocity of the whole system is 56+-2 km/s. Furthermore, very deep imagery and high resolution spectroscopy of a small part of the northern radio ridge of W 50 has revealed for the first time the very faint optical nebulosity associated with this edge. It is suggested that patchy foreground dust along the ~5 kpc sightline is inhibiting the detection of all of the optical nebulosity associated with W 50. The interaction of the microquasar jets of SS 433 with the W 50 shell is discussed.en
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Ireland
dc.titleDeep optical observations of the interaction of the SS 433 microquasar jet with the W 50 radio continuum shellen
dc.local.authorsP. Boumis (1), J. Meaburn (1,2), J. Alikakos (1,3), M. P. Redman (4), S. Akras (1,3), F. Mavromatakis (5), J. A. Lopez (6), A. Caulet (6), C. D. Goudis (1,3) ((1) Institute of Astronomy & Astrophysics, National Observatory of Athens, Greece, (2) Jodrell Bank Observatory, University of Manchester, UK, (3) Astronomical Laboratory, Department of Physics, University of Patras, Greece, (4) Department of Physics, National University of Ireland Galway, Ireland, (5) Technological Education Institute of Crete, General Department of Applied Science, Heraklion, Crete, Greece, (6) Instituto de Astronomia, UNAM, Ensenada, Mexico)en

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Attribution-NonCommercial-NoDerivs 3.0 Ireland
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