High Resolution Spectroscopy of the Planetary Nebulae PM1-242, PM1-318 and PM1-322

Abstract

We have recently confirmed the planetary nebula (PN)nature of PM1-242, PM1-318 and PM1-322. Here we present high-resolution long-slit spectra of these three PNe in order to analyze their internal kinematics and to investigate their physical structure. PM1-242 is a tilted ring and not an elliptical PN as suggested by direct images. The object is probably related to ring-like PNe and shows an unusual point-symmetric brightness distribution in the ring. PM1-318 is a pole-on elliptical PN, instead of a circular one as suggested by direct images. PM1-322 is spatially unresolved and its spectrum shows large differences between the forbidden lines and H$\alpha$ profiles, with the latter showing a double-peaked profile and relatively extended wings (FWZI $\sim$ 325 km\,s${}^{-1}$). These properties are found in other PNe that are suspected to host a symbiotic central star.

4 pages, 3 figures, accepted for publication in PASA

References in corpus (3)

• Kinematics of the ring-like nebula SuWt 2
• Sub-arcsecond Morphology of Planetary Nebulae
• Spectroscopic confirmation of the planetary nebula nature of PM1-242, PM1-318 and PM1-333 and morphological analysis of the nebulae

Cited by in corpus (5)

• A census of symbiotic stars in the 2MASS, WISE and Gaia surveys
• A catalogue of integrated H-alpha fluxes for 1,258 Galactic planetary nebulae
• Catalogue of central stars of planetary nebulae: Expanded edition
• New Galactic Planetary Nebulae selected by radio and multi-wavelength characteristics
• PM 1-322: new variable planetary nebula