DETECTION OF GALACTIC CENTER SOURCE G2 AT 3.8 μm DURING PERIAPSE PASSAGE

@article{Witzel2014DETECTIONOG,
  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 Randy D. Campbell and E. E. Becklin and Gabriela Canalizo and Samantha Chappell and Tuan Do and J. R. Lu and Keith R. Matthews and Leonhard Meyer and Alan N. Stockton and Peter L. Wizinowich and S. Yelda},
  journal={The Astrophysical Journal Letters},
  year={2014},
  volume={796}
}
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 its 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… 

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