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| Paper: |
The Bipolarity of the Highest Galactic Latitude Planetary Nebula, LoTr 5 (PN G339.9+88.4) around IN Com |
| Volume: |
313, Asymmetrical Planetary Nebulae III |
| Page: |
28 |
| Authors: |
Graham, M.F.; Meaburn, J.; Harman, D.J.; Holloway, A.J.; Lopez, J.A. |
| Abstract: |
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. |
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