Kinematics of the planetary nebulae in the Large Magellanic Cloud

Journal Article · Fri Apr 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166222· OSTI ID:6995694

Meatheringham, S J; Dopita, M A; Ford, H C; Webster, B L

The radial velocities of a total of 94 PN in the LMC have been determined. This kinematics of the population of PN is compared with the H I data in the context of a reanalysis of the survey by Rohlfs et al. (1984), taking into account the transverse velocity of the LMC. It is found that the best solution for this transverse velocity is 275 + or - 65 km/s and that the LMC is near perigalacticon. The rotation solution for the PN population is essentially identical with that of the H I, but the vertical velocity dispersion of 19.1 km/s is much greater than the value of 5.4 km/s found for the H I. This increase in velocity dispersion is consistent with it being the result of orbital heating and diffusion operating in the LMC in a manner essentially identical with that found for the solar neighborhood. 66 references.

• Research Organization: Mount Stromlo and Siding Spring Observatories, Canberra (Australia); Space Telescope Science Institute, Baltimore, MD (USA); New South Wales Univ., Kensington (Australia)
• OSTI ID: 6995694
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 327; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
COSMIC RADIO SOURCES
GALAXIES
H1 REGIONS
HEATING
MAGELLANIC CLOUDS
NEBULAE
PLANETARY NEBULAE
RADIAL VELOCITY
VELOCITY