| Issue |
Astron. Astrophys. Suppl. Ser.
Volume 138, Number 2, August 1999
|
|
|---|---|---|
| Page(s) | 275 - 297 | |
| DOI | https://doi.org/10.1051/aas:1999107 | |
| Published online | 15 August 1999 | |
Monochromatic morphologies of Abell planetary nebulae *
1
Laboratoire d'Astronomie Spatiale du CNRS, Allée Peiresc, Les Trois Lucs, BP. 8, 13376 Marseille Cedex 12, France e-mail: trung.hua@astrsp-mrs.fr
2
Department of Physics & Astronomy, University of Calgary, Calgary, T2N 1N4, Canada e-mail: kwok@iras.ucalgary.ca
Send offprint request to: C.T. Hua
Received:
26
February
1999
Accepted:
4
June
1999
Monochromatic (
10 Å) images have been obtained for
seven large (2-10 arcmin) Abell planetary nebulae. From this deep survey, we
found 4 to have normal bipolar shapes, whereas 3 have truly spherical
shells. The structures of these nebulae are discussed using the absolutely
calibrated intensity maps in Hα, 
N ii
![$]$](/articles/aas/abs/1999/14/ds8598/ds8598_tex_eq3.png)
, and O iii
.
An attempt to derive ionized mass using our (dereddened) measured absolute flux
as a function of distance to the PN is also given.
Key words: ISM: Planetary nebulae: individual (A 13, A 21, A 24, A 28, A 30, A 33, A 36)
© European Southern Observatory (ESO), 1999