| Issue |
A&A
Volume 433, Number 2, April II 2005
|
|
|---|---|---|
| Page(s) | 579 - 582 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20042218 | |
| Published online | 22 March 2005 | |
The identification of PM 1-322 as a new young high-density planetary nebulae*
1
Observatório Nacional-MCT, Rua José Cristino 77, CEP 20921-400, São Cristóvão, Rio de Janeiro-RJ, Brazil e-mail: claudio@on.br
2
Instituto de Astrofísica de Andalucía, CSIC, Apdo.3004, 18080 Granada, Spain
Received:
20
October
2004
Accepted:
30
November
2004
We report spectroscopic observations of a new planetary nebula
PM 1-322, which has not yet been identified. This object was found during a
northern survey of post-AGB and planetary nebulae candidates selected
from García-Lario et al. (1997, A&AS, 126, 479) and Preite-Martinez (1988, A&AS, 76, 317). Here
we present the main spectroscopic features including a list of the
intensities of the identified emission lines. The main spectral
characteristic of PM 1-322 is the presence of a very strong [O iii] λ4363 emission line (I[OIII]4363/Hβ 
120)
indicating high electron densities (log
). A comparison
with similar objects strongly suggests that PM 1-322 is a very young
planetary nebula, although the posibility of a symbiotic nature can
not be ruled out.
Key words: planetary nebulae: individual: PM 1-322
© ESO, 2005
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