Volume 367, Number 3, March I 2001
|Page(s)||967 - 972|
|Published online||15 March 2001|
The distances of planetary nebulae: A scaling factor based upon radial velocities
Instituto de Astronomia y Meteorologia, Avenida Vallarta 2602, Col. Arcos Vallarta, CP 44130 Guadalajara, Jalisco, Mexico
Corresponding author: J. P. Phillips, firstname.lastname@example.org
Accepted: 1 December 2000
We have used the observed radial velocities of planetary nebulae, and the galactic rotation curve to define a new distance scale for planetary nebulae. Care has been taken to restrict the analysis to sources in which distance non-linearities are minimised, and for which distortion of the distance scale is likely to be small. We conclude, as a result, that the so-called "long"distance scales are the most valid, and that various "shorter"scales are unlikely to be correct. The primary systematic errors in this procedure derive from uncertainties in the galactic rotation profile, and in and R0. Such errors are less than those normally associated with PN distance determinations.
Key words: planetary nebulae: general / Galaxy: kinematics and dynamics
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.