From Stellar to Extragalactic Astronomy at the Armagh Observatory and Planetarium 2021-2024

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The projects covered in this consolidated grant bid covers a range of questions in stellar, galactic and extragalactic astronomy and astrophysics. On the stellar side, the proposed projects deals with the role of stellar magnetic fields, stellar flares and the late stages of stellar evolution. In particular, we aim to understand the origin of magnetic fields in white dwarves, of energetic flares in Solar-type stars and less massive stars and of some of the most exotic and puzzling metal-rich stars. In our Galaxy we aim to understand the origin gamma-ray particles as will be soon observed by Cherenkov Telescope Array by mapping the distribution of the densest clouds of gas where gamma rays are produced. Finally, we aim to understand how elliptical and lenticular galaxies grew by accreting other satellite galaxies, by delving in the properties of their stellar outskirts where the record of such events are still preserved.