Newly Identified Planetary Nebula Candidates in M31 using Deep-Learning Search of Hubble Space Telescope Images

Yiğit C. Atılgan, Aleyna Demirci, Nazım Aksaker +3

The Hubble Space Telescope has imaged approximately a quarter of a billion stars in M31's disc, yet only slightly over a thousand planetary nebulae (PNe) are known, mostly from gro…