The Fornax 3D project: PNe populations and stellar metallicity in edge-on galaxies
| Autor: | Sébastien Viaene, K. Fahrion, G. van de Ven, P. M. Galán-de Anta, L. Morelli, Ignacio Martín-Navarro, Richard M. McDermid, Mariya Lyubenova, Dimitri A. Gadotti, T. W. Spriggs, B. Nedelchev, P. T. de Zeeuw, Jesús Falcón-Barroso, Enrico Maria Corsini, Marc Sarzi, F. Pinna, Enrichetta Iodice, Lodovico Coccato, Ling Zhu |
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| Rok vydání: | 2021 |
| Předmět: |
Metallicity
Population FOS: Physical sciences Abundances [Galaxies] Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics 01 natural sciences Luminosity cD Galaxies: Abundances Methods: Observational 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Fornax Cluster education 010303 astronomy & astrophysics Stellar evolution Astrophysics::Galaxy Astrophysics Luminosity function (astronomy) Physics education.field_of_study Elliptical and lenticular cD [Galaxies] 010308 nuclear & particles physics Astronomy and Astrophysics Planetary Nebulae: General Galaxies: Elliptical and Lenticular Planetary nebula Techniques: Imaging Spectroscopy Astrophysics - Astrophysics of Galaxies Observational [Methods] Galaxy Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Galaxies: Elliptical and lenticular cD Planetary nebulae: General Techniques: Imaging spectroscopy Astrophysics::Earth and Planetary Astrophysics General [Planetary nebulae] Imaging spectroscopy [Techniques] |
| Zdroj: | Astronomy & Astrophysics Astronomy and Astrophysics, 652 Galán-De Anta, P M, Sarzi, M, Spriggs, T W, Nedelchev, B, Pinna, F, Martín-Navarro, I, Coccato, L, Corsini, E M, de Zeeuw, P T, Falcón-Barroso, J, Gadotti, D A, Iodice, E, Fahrion, K, Lyubenova, M, McDermid, R M, Morelli, L, van de Ven, G, Viaene, S & Zhu, L 2021, ' The Fornax 3D project: PNe populations and stellar metallicity in edge-on galaxies ', Astronomy and Astrophysics, vol. 652, A109 . https://doi.org/10.1051/0004-6361/202140834 |
| ISSN: | 0004-6361 |
| DOI: | 10.1051/0004-6361/202140834 |
| Popis: | 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 understand the later stages of stellar evolution. Previous works have indicated that a 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 very large telescope-multi unit spectroscopic explorer (VLT-MUSE) integral-field observations and dedicated PNe detection procedures, we constructed the PNe luminosity function and computed the luminosity-specific number of PNe α in both in- and off-plane regions of our edge-on systems. Results. Comparing these α 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. |
| Databáze: | OpenAIRE |
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