Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005a%26a...433..579p&link_type=abstract
Astronomy and Astrophysics, Volume 433, Issue 2, April II 2005, pp.579-582
Astronomy and Astrophysics
Astrophysics
7
Planetary Nebulae: Individual: Pm 1-322
Scientific paper
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 Ne > 6.0). 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.
Based on observations collected at the Centro Astronomico Hispano Aleman (CAHA) at Calar Alto, operated jointly by the Max-Planck Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC).
Miranda Luis F.
Pereira Claudio Bastos
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