Confirmation and Characterization of Galactic Planetary Nebulae: Insights from a Spectroscopic Study

We present a spectroscopic investigation of 25 objects previously reported as possible Planetary Nebulae (PNe) in recent catalogs to obtain their physical properties and establish their true nature. We found 11 objects showing intense emission lines, 11 objects where it was not possible to measure H𝛽, and 3 objects where no lines were present. We used diagnostic diagrams to confirm the true PN nature of the eight objects. We obtained elemental abundances for the three objects, the values of which are in agreement with the mean PNe values for our Galaxy. Four objects show N II 𝜆6583 being more intense than H𝛼, and for two of them, this can be explained by the presence of shocks in the gas. Finally, we report angular sizes based on H𝛼 and O III 𝜆5007 emission.