Detection of Galactic Center source G2 at 3.8 μm during periapse passage

  title={Detection of Galactic Center source G2 at 3.8 $\mu$m during periapse passage},
  author={Gunther Witzel and Andrea M. Ghez and Mark R. Morris and Breann N. Sitarski and Anna Boehle and Smadar Naoz and Randall D. Campbell and Eric Edward Becklin and Gabriela Canalizo and Samantha Chappell and Tuan Do and Jessica R. Lu and Keith Y. Matthews and Leonhard Meyer and Alan N. Stockton and Peter Wizinowich and Sylvana Yelda},
  journal={The Astrophysical Journal},
We report new observations of the Galactic Center source G2 from the W. M. Keck Observatory. G2 is a dusty red object associated with gas that shows tidal interactions as it nears closest approach with the Galaxy’s central black hole. Our observations, conducted as G2 passed through periapse, were designed to test the proposal that G2 is a 3 earth mass gas cloud. Such a cloud should be tidally disrupted during periapse passage. The data were obtained using the Keck II laser guide star adaptive… Expand
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