Spiral galaxies such as the Pinwheel Galaxy (M101) regulate their star formation via massive stellar feedback. Using JWST/NIRCam data in 6 different filters spanning 0.9–4.4 μm, we perform aperture photometry and spectral energy distribution (SED) analysis on a region, previously known to be an expanding supershell (Kamphuis et al., 1991) and recently confirmed as a high-confidence site of galactic fountain in M101 (Anitha Shaji et al., 2025). Out of all 9 fountain sites identified in the latter work, this region hosts the youngest and most energetic fountain, presenting traces of recent star formation. By taking the photometric fluxes of the observational data and using CIGALE (Code Investigating GALaxy Emission) software, we model the stellar population, nebular emission, dust attenuation, and dust emission associated with this region to investigate the underlying and/or contagious star formation.

Location: Sporilov Room 101

Starting from a divergence-free rank-4 tensor of which the trace is the cosmological Einstein tensor, we give a construction of conserved charges in Einstein's gravity and its higher derivative extensions for asymptotically anti-de Sitter spacetimes. The current yielding the charge is explicitly gauge-invariant, and the charge expression involves the linearized Riemann tensor at the boundary (Phys. Rev. D 99, 044016, 2019).

Location: ASU Praha-Spořilov