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- W4380079662 abstract "Planetary nebula (PN) surveys in systems beyond ~10 Mpc often find high-excitation, point-like sources with [O III] $lambda 5007$ fluxes greater than the apparent bright-end cutoff of the planetary nebula luminosity function (PNLF). Here we identify PN superpositions as one likely cause for the phenomenon and describe the proper procedures for deriving PNLF distances when object blends are a possibility. We apply our technique to two objects: a model Virgo-distance elliptical galaxy observed through a narrow-band interference filter, and the Fornax lenticular galaxy NGC 1380 surveyed with the MUSE integral-field unit spectrograph. Our analyses show that even when the most-likely distance to a galaxy is unaffected by the possible presence of PN superpositions, the resultant value will still be biased towards too small a distance due to the asymmetrical nature of the error bars. We discuss the future of the PNLF in an era where current ground-based instrumentation can push the technique to distances beyond ~35 Mpc." @default.
- W4380079662 created "2023-06-10" @default.
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- W4380079662 date "2023-06-01" @default.
- W4380079662 modified "2023-10-01" @default.
- W4380079662 title "The Effect of Superpositions on the Planetary Nebula Luminosity Function" @default.
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- W4380079662 doi "https://doi.org/10.3847/1538-4357/acc9bd" @default.
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