Kinematics of disk planetary nebulae

Details Kinematics of disk planetary nebulae Kinematics of disk planetary nebulae

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...262..271m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 262, no. 1, p. 271-280.

Astronomy and Astrophysics

Astrophysics

45

Galactic Rotation, Gas Dynamics, Oort Cloud, Planetary Nebulae, Spatial Distribution, Chemical Composition, Density Distribution

Scientific paper

The space distribution and kinematic properties of galactic planetary nebulae are considered, on the basis of a sample containing 150 objects. It is shown that planetary nebulae of Types I, IIa, IIb, III, and IV form an approximately continuous sequence in terms of these properties, confirming similar conclusions based on their chemical composition. Some kinematical consequences regarding the connection between planetary nebulae and H II regions are explored, leading to a determination of the galactic rotation curve and Oort's constants. It is found that the rotation curve presents a flattening near the solar circle and a moderate increase for larger galactocentric distances.

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