SIMBAD references

1999A&A...351.1036A - Astronomy and Astrophysics, volume 351, 1036-1040 (1999/11-3)

PN G218.9-10.7: a galactic emission nebula of unique morphology.

ALI A. and PFLEIDERER J.

Abstract (from CDS):

We present an Hα+[NII] narrow band image and optical spectra of the galactic nebula PN G218.9-10.7 that has been hardly studied up to now and is suspected to be a planetary nebula. Its morphology is quite unusual: the nebula appears to consist of both symmetric components and asymmetric diffuse ones, and also displays long straight filaments in the east. It rather looks like a combination of morphological features found in HII regions, supernova remnants and planetary nebulae. The nebula has very low [OIII] emission, and is close to a very blue faint star that has been supposed to be of high gravity nature. Detailed description and attempt to give an interpretation of the morphology for this nebula are discussed. The spectral results of the object have been derived, such as the interstellar extinction, excitation class, electron temperature, and electron density.

Abstract Copyright:

Journal keyword(s): ISM: planetary nebulae: individual: PN G218.9-10.7 - ISM: planetary nebulae: general

Simbad objects: 12

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2019.12.12-22:16:56

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