HCG 57: Evidence for Shock-heated Intergalactic Gas from X-Rays and Optical Emission Line SpectroscopyDOI: info:10.3847/1538-4357/ada14bv. 979IOP240
O'Sullivan, Ewan, Appleton, P. N., Joshi, B. A., Lanz, Lauranne, Alatalo, Katherine, Vrtilek, Jan M., Zezas, Andreas, and David, Laurence P. 2025. "HCG 57: Evidence for Shock-heated Intergalactic Gas from X-Rays and Optical Emission Line Spectroscopy." The Astrophysical Journal, 979 240. https://doi.org/10.3847/1538-4357/ada14b.