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Planetary nebulae in the circumnuclear region of M31: a spectroscopic sample

Dong, Hui; Li, An-Qi; Li, Zhi-Yuan +2 more

Planetary nebulae (PNe) are an important tool for studying the dynamics and chemical evolution of galaxies in the Local Universe, given their characteristic bright emission line spectra. The Andromeda Galaxy (M31) provides a unique laboratory for studying PNe in the circumnuclear region, thanks to its proximity and almost uniformly low line-of-sig…

The NGC 7742 star cluster luminosity function: a population analysis revisited

de Grijs, Richard; Ma, Chao

We re-examine the properties of the star cluster population in the circumnuclear starburst ring in the face-on spiral galaxy NGC 7742, whose young cluster mass function has been reported to exhibit significant deviations from the canonical power law. We base our reassessment on the clusters’ luminosities (an observational quantity) rather than the…