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Comparing jet-shaped point symmetry in cluster cooling flows and supernovae
Soker, Noam
I point out similarities between point-symmetric X-ray morphologies in cooling flow groups and clusters of galaxies, which are observed to be shaped by jets, and point-symmetric morphologies of eight core-collapse supernova (CCSN) remnants. I identify these similarities by qualitative eye inspection of multiwavelength images. I use these similarit…
Spectroscopic Confirmation of an Ultra-Massive Galaxy in a Protocluster at z ∼ 4.9
Cooper, M. C.; Urbano Stawinski, Stephanie M.; Muzzin, Adam +8 more
We present spectroscopic confirmation of an ultra-massive galaxy (UMG) with log(M⋆/M⊙)=10.98±0.07 at zspec=4.8947 in the Extended Groth Strip (EGS), based on deep observations of Ly α emission with Keck/DEIMOS. The ultra-massive galaxy (UMG-28740) is the most massive member in one of the most significant overdensities in the EGS, with four additio…