1999/10/06 by M. Arnaboldi, Arnaboldi, M., N. R. Napolitano +4
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9910108
4 pages, 2 figures. To appear on ``Galaxy Dynamics: from Early Universe to the Present'', ASP Conf. Ser., F. Combes, G.A. Mamon and V. Charmandaris (eds.)
arxiv created 1999/10/06 · openalex publication_date 1999/10/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Planetary Nebulae (PNe) are very important kinematical tracers of the outer regions of early-type galaxies, where the integrated light techniques fail. Under ad hoc assumptions, they allow measurements of rotation velocity and velocity dispersion profile from descrete radial velocity fields. We present the results on the precision allowed by different set of radial velocity samples, discuss the hypotheses in the analysis of descrete velocity fields and their impact on the inferred kinematics of the stellar population.