Studying Nearby Galactic Planetary Nebulae with MUSE: On the Physical Properties of IC 418

Galaxies

Jeremy R. Walsh¹  Ana Monreal-Ibero ² 

[1] European Southern Observatory, 85748 Garching, Germany;Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands;

关键词: optical spectroscopy;    integral field spectroscopy;    planetary nebulae;    emission lines;    physical conditions;   

DOI  :  10.3390/galaxies10010018

来源: DOAJ

【 摘 要 】

Spectroscopic mapping of planetary nebulae (PNe) is particularly useful to capture the richness in terms of physical and chemical properties that exist in these objects. The advent of the multi-unit spectroscopic explorer (MUSE), a large integral field unit mounted on the ESO Very Large Telescope, allow us to obtain this information over the whole face of galactic PNe in a reasonable amount of time. This in turn reveals a wealth of information that can bring insight into this structural complexity. Here we discuss new results from commissioning data for the physical properties of IC 418 and succinctly review recently published results on two additional targets (NGC 3132 and NGC 7009). For the newly-analysed PN, electron densities are high with $n_e$([S ii]) displaying a completely different structure than $n_e$([Cl iii]). The electron temperature was relatively uniform, but somewhat higher at the rim as measured by two of the three used diagnostics ([S iii] 6312/9069, and [Ar iii] 5192/7136). The joint results for the three PNe amply illustrate the potential of MUSE for the study of galactic PNe.

【 授权许可】

Unknown