Planetary Nebulae as Probes of Dark Matter in NGC 3384

Preprint

19 October 1995

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9510098

Abstract

We have obtained radial velocities of 68 planetary nebulae surrounding the SB0 galaxy NGC 3384 in the Leo I group, using the CTIO 4 m telescope and the Rutgers Fabry-Perot interferometer. The PN system exhibits a well-ordered rotation field aligned with the photometric axes of the galaxy. The rotation curve is flat from about 2 kpc until at least 7 kpc. Our results imply that at least a third of the dynamical mass of the NGC 3379/3384 system may be accounted for in the two bright galaxies.

Keywords

RADIAL VELOCITIES
PLANETARY NEBULAE
OBTAINED RADIAL
INTERFEROMETER
DARK MATTER
GALAXY
KPC
NGC

All Related Versions

Version 1, 1995-10-19, ArXiv
Published version: The Astrophysical Journal, 443, L5.

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