The kinematics of planetary nebulae in the outer fields of the Large Magellanic Cloud

Abstract

view Abstract Citations (9) References (38) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Kinematics of Planetary Nebulae in the Outer Fields of the Large Magellanic Cloud Vassiliadis, E. ; Meatheringham, Stephen J. ; Dopita, Michael A. Abstract We present echelle observations of 16 planetary nebulae (PNs) in the [O III] λ5007 emission line, originally detected in a UK-Schmidt objective prism survey of the outer fields of the Large Magellanic Cloud (LMC). Of these 16 objects, 11 have had no velocity information published previously. Expansion and radial velocities have been derived by a simple Gaussian fitting technique. These results have been used in conjunction with previous data presented to test whether the position angle of the kinematic line of nodes, θ_0_ and the systemic Galactocentric velocity, V_0_, of the LMC remain unchanged with the inclusion of tHis additional outer field information. After analysis of the combined sample, and also for those objects greater than 4^deg^ from the optical center of the LMC, we find that our results confirm previous values, where θ_0_ ~ 170^deg^ and V_0_~ 40 km s^-1^. The LMC is confirmed to consist of a single disk, and not a dual disk structure as originally proposed by Freeman, Illingworth, and Oemler. Publication: The Astrophysical Journal Pub Date: August 1992 DOI: 10.1086/171599 Bibcode: 1992ApJ...394..489V Keywords: Magellanic Clouds; Planetary Nebulae; Emission Spectra; Radial Velocity; Schmidt Telescopes; Stellar Evolution; Stellar Rotation; Astrophysics; GALAXIES: KINEMATICS AND DYNAMICS; GALAXIES: MAGELLANIC CLOUDS; ISM: PLANETARY NEBULAE: GENERAL full text sources ADS | data products SIMBAD (16) NED (1)