Orbits of nearby planetary nebulae and their interaction with the interstellar medium

Abstract

We present and analyze the orbits of eight nearby planetary nebulae (PNs) using two different Galactic models. The errors of the derived orbital parameters are determined with a Monte Carlo method. Based on the derived orbital parameters, we find that Sh 2-216, DeHt 5, NGC 7293, A21, and Ton 320 belong to the thin-disk population, and PG 1034+001 and A31 belong to the thick-disk population. PuWe 1 probably belongs to the thick-disk population, but its population classification is very uncertain due to the large errors of its derived orbital parameters. The PN-ISM interactions are observed for the eight PNs in our sample. The position angles of the proper motions of the PNs are consistent with the directions of the PN-ISM interaction regions. The kinematic ages of PNs are much smaller than the time for them to cross the Galactic plane. Using the models of Borkowski et al. and Soker et al., the PN-ISM interaction can be used to derive the local density of ISM in the vicinity of evolved PNs. According to the three-dimensional hydrodynamic simulations of Wareing et al. (WZO), Sh 2-216, A21, and Ton 320 are in the WZO 3 stage, PG 1034+001 and NGC 7293 are in the WZO 1 stage, and PuWe 1 is in the WZO 2 stage.

12 pages, 2 figures, 4 tables; published in AJ (2011, AJ, 141, 104)

References in corpus (12)

• Local Kinematics and the Local Standard of Rest
• The Second-Generation Guide Star Catalog: Description and Properties
• The orbits of open clusters in the Galaxy
• The interaction of planetary nebulae and their AGB progenitors with the interstellar medium
• Trigonometric Parallaxes of Central Stars of Planetary Nebulae
• High-resolution FUSE and HST ultraviolet spectroscopy of the white dwarf central star of Sh 2-216
• Astrometry with the Hubble Space Telescope: Trigonometric Parallaxes of Planetary Nebula Nuclei: NGC 6853, NGC 7293, Abell 31, and DeHt 5
• PHL 932: when is a planetary nebula not a planetary nebula?
• New candidate Planetary Nebulae in the IPHAS survey: the case of PNe with ISM interaction
• The Halos of Planetary Nebulae in the Mid-Infrared: Evidence for Interaction with the Interstellar Medium
• Probing the Magnetized Interstellar Medium Surrounding the Planetary Nebula Sh 2-216
• Optical line profiles of the Helix planetary nebula (NGC 7293) to large radii

Cited by in corpus (5)

• Milky Way Mass Models for Orbit Calculations
• Rotation Curve and Mass Distribution in the Galaxy from the Velocities of Objects at Distances up to 200 kpc
• Independent determination of the systematic and random errors of the proper motions in the PPMXL catalog using quasars
• On the alignment of PNe and local magnetic field at the galactic centre: MHD numerical simulations
• On rare core collapse supernovae inside planetary nebulae