Uncovering Planetary Nebulae in Early Type Galaxies using the Rutgers Fabry-Perot

Abstract

We report on observations of four early-type galaxies performed with the Rutgers Fabry-Perot in order to search for Planetary Nebulae (PNe) in these systems. The aim is to use the PNe as kinematic tracers of the galaxy potential. We describe our data reduction and analysis procedure and show that the proper calibration of our detection statistic is crucial in getting down to our limiting magnitude of $m_{5007}=26.1$. In the case of the two Leo galaxies we find moderately sized samples: 54 PNe in NGC 3379 and 50 PNe in NGC 3384; NGC 4636 (2 PNe) and NGC 1549 (6 PNe) are included for completeness. We present our samples in tabular form, as well as the spectrum for each PN. We constructed simple non-parametric spherical mass models for NGC 3379 using a Monte Carlo Markov Chain method to explore the space of likely mass models. We find a remarkably constant mass-to-light ratio within five half-light radii with an overall $B$ band mass-to-light ratio $\sim 5$. A simple mass-to-light estimate for NGC 3384 yields ${{\rm Y}}_B\sim 11$, but is likely an overestimate.

arXiv comment48 pages, 15 figures, 6 tables, aastex.cls, submitted to AJ

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Cited by in corpus (7)

• Kinematic properties of early-type galaxy haloes using planetary nebulae
• The PN.S Elliptical Galaxy Survey: the dark matter in NGC 4494
• The PN.S Elliptical Galaxy Survey: Data Reduction, Planetary Nebula Catalog, and Basic Dynamics for NGC 3379
• The extended Planetary Nebula Spectrograph (ePN.S) early-type galaxy survey. The kinematic diversity of stellar halos and the relation between halo transition scale and stellar mass
• Fabry-Perot Absorption Line Spectroscopy of the Galactic Bar. I. Kinematics
• Planetary Nebulae in Face-On Spiral Galaxies. II. Planetary Nebula Spectroscopy
• Probing the Environment with Galaxy Dynamics