Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..313...28g&link_type=abstract
Asymmetrical Planetary Nebulae III: Winds, Structure and the Thunderbird, Proceedings of the conference held 28 July - 1 August
Astronomy and Astrophysics
Astronomy
Scientific paper
High resolution, spatially resolved, longslit profiles of the [O III] 5007 Å emission line of the highest galactic latitude planetary nebula, LoTr 5, have been obtained with the Manchester Echelle Spectrometer (MES-SPM) on the San Pedro Martir (SPM 2.1m) telescope. These are compared with a deep narrow-band [O III] 5007 Å mosaic image obtained with the same system (see Fig. 1).
This faint nebula, at a distance of ≥ 500 pc from the galactic plane is found to be expanding asymmetrically. Some form of bi-polar structure is suggested by modelling the position-velocity arrays of line profiles and the new [O III] 5007 Å image. Interestingly, the modelled bi-polar axis is nearly perpendicular to the orbital plane of the IN Com binary system; this supports the theories which predict that binary systems play a part in shaping the outflow.
Evidence for interaction of the envelope of LoTr 5 with its local interstellar medium is also present. The results of this work are in an MNRAS paper to be published in early 2004.
Graham M. F.
Harman D. J.
Holloway A. J.
Lopez Jose Alberto
Meaburn John
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