The Fornax 3D project: PNe populations and stellar metallicity in edge-on galaxies

Abstract

Context. Extragalactic Planetary Nebulae (PNe) are useful distance indicators and are often used to trace the dark-matter content in external galaxies. At the same time, PNe can also be used as probes of their host galaxy stellar populations and to help understanding the later stages of stellar evolution. Previous works have indicated that specific number of PNe per stellar luminosity can vary across different galaxies and as a function of stellar-population properties, for instance increasing with decreasing stellar metallicity. Aims. In this study we further explore the importance of stellar metallicity in driving the properties of the PNe population in early-type galaxies, using three edge-on galaxies in the Fornax cluster offering a clear view into their predominantly metal-rich and metal-poor regions near the equatorial plane or both below and above it, respectively . Methods. Using VLT-MUSE integral-field observations and dedicated PNe detection procedures, we construct the PNe luminosity function and compute the luminosity-specific number of PNe alpha in both in- and off-plane regions of our edge-on systems. Results. Comparing these alpha values with metallicity measurements also based on the same MUSE data, we find no evidence for an increase in the specific abundance of PNe when transitioning between metal-rich and metal-poor regions. Conclusions. Our analysis highlights the importance of ensuring spatial consistency to avoid misleading results when investigating the link between PNe and their parent stellar populations and suggest that in passively-evolving systems variations in the specific number of PNe may pertain to rather extreme metallicity regimes found either in the innermost or outermost regions of galaxies.

References in corpus (33)

• Parametric Recovery of Line-of-Sight Velocity Distributions from Absorption-Line Spectra of Galaxies via Penalized Likelihood
• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• The SAURON project - V. Integral-field emission-line kinematics of 48 elliptical and lenticular galaxies
• An updated MILES stellar library and stellar population models
• Automated data reduction workflows for astronomy
• UV-extended E-MILES stellar population models: young components in massive early-type galaxies
• The ACS Fornax Cluster Survey. V. Measurement and Recalibration of Surface Brightness Fluctuations and a Precise Value of the Fornax--Virgo Relative Distance
• The Atlas3D Project - XXX. Star formation histories and stellar population scaling relations of early-type galaxies
• The Atlas3D project - VII. A new look at the morphology of nearby galaxies: the kinematic morphology-density relation
• On the use of empirical bolometric corrections for stars
• The Absolute Magnitude of the Sun in Several Filters
• Kinematic properties of early-type galaxy haloes using planetary nebulae
• Planetary nebulae as tracers of galaxy stellar populations
• Stellar velocity profiles and line strengths out to four effective radii in the early-type galaxies NGC 3379 and NGC 821
• The PN.S Elliptical Galaxy Survey: Data Reduction, Planetary Nebula Catalog, and Basic Dynamics for NGC 3379
• The Fornax 3D project: unveiling the thick disk origin in FCC 170: signs of accretion?
• The GIST Pipeline: A Multi-Purpose Tool for the Analysis and Visualisation of (Integral-field) Spectroscopic Data
• Detection of Intracluster Planetary Nebulae in the Coma Cluster
• The Fornax3D project: overall goals, galaxy sample, MUSE data analysis and initial results
• Evolution of planetary nebulae II. Population effects on the bright cut-off of the PNLF
• The Need for Speed: Escape velocity and dynamical mass measurements of the Andromeda galaxy
• The Fornax3D project: Tracing the assembly history of the cluster from the kinematic and line-strength maps
• The Fornax 3D project: a two-dimensional view of the stellar initial mass function in the massive lenticular galaxy FCC 167
• The unmixed kinematics and origins of diffuse stellar light in the core of the Hydra I cluster (Abell 1060)
• The Panchromatic Hubble Andromeda Treasury I: Bright UV Stars in the Bulge of M31
• The Fornax 3D project: Thick disks in a cluster environment
• The mysterious cut-off of the Planetary Nebula Luminosity Function
• The Planetary Nebula Luminosity Function at the Dawn of Gaia
• Fornax 3D project: automated detection of planetary nebulae in the centres of early-type galaxies and first results
• The Planetary Nebulae Population in the Nuclear Regions of M31: the SAURON view
• The halo of M105 and its group environment as traced by planetary nebula populations: I. Wide-field photometric survey of planetary nebulae in the Leo I group
• The Planetary Nebulae Population in the Central Regions of M32: the SAURON view
• Revised Simulations of the Planetary Nebulae Luminosity Function

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• Towards Precision Cosmology With Improved PNLF Distances Using VLT-MUSE. III. Impact of Stellar Populations in Early-Type Galaxy
• The Fornax3D project: Planetary nebulae catalogue and independent distance measurements to Fornax cluster galaxies