New Extinction and Mass Estimates from Optical Photometry of the Very Low Mass Brown Dwarf Companion CT Chamaeleontis B with the Magellan AO System

@article{Wu2015NewEA,
  title={New Extinction and Mass Estimates from Optical Photometry of the Very Low Mass Brown Dwarf Companion CT Chamaeleontis B with the Magellan AO System},
  author={Y. Wu and L. Close and J. Males and T. Barman and K. Morzinski and K. Follette and V. Bailey and T. Rodigas and P. Hinz and A. Puglisi and M. Xompero and R. Briguglio},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2015}
}
  • Y. Wu, L. Close, +9 authors R. Briguglio
  • Published 2015
  • Physics
  • arXiv: Solar and Stellar Astrophysics
  • We used the Magellan adaptive optics (MagAO) system and its VisAO CCD camera to image the young low mass brown dwarf companion CT Chamaeleontis B for the first time at visible wavelengths. We detect it at r', i', z', and Ys. With our new photometry and Teff~2500 K derived from the shape its K-band spectrum, we find that CT Cha B has Av = 3.4+/-1.1 mag, and a mass of 14-24 Mj according to the DUSTY evolutionary tracks and its 1-5 Myr age. The overluminosity of our r' detection indicates that the… CONTINUE READING
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