XO-2b: Transiting Hot Jupiter in a Metal-rich Common Proper Motion Binary

@article{Burke2007XO2bTH,
  title={XO-2b: Transiting Hot Jupiter in a Metal-rich Common Proper Motion Binary},
  author={Christopher J. Burke and P. R. McCullough and Jeff A. Valenti and Christopher M. Johns–Krull and Kenneth Allan Janes and James N. Heasley and Frank Summers and J. E. Stys and R. H. Bissinger and Michael L. Fleenor and Cindy N. Foote and E. Garc{\'i}a‐Melendo and Bruce L. Gary and Paul J. Howell and Franco Mallia and Gianluca de Masi and Brian W. Taylor and T. Vanmunster},
  journal={The Astrophysical Journal},
  year={2007},
  volume={671},
  pages={2115-2128}
}
We report on a V = 11.2 early K dwarf, XO-2 (GSC 03413-00005), that hosts a Rp = 0.98±0.010.03 RJ, Mp = 0.57 ± 0.06 MJ transiting extrasolar planet, XO-2b, with an orbital period of 2.615857 ± 0.000005 days. XO-2 has high metallicity, [Fe/H ] = 0.45 ± 0.02, high proper motion, μtot = 157 mas yr−1, and a common proper motion stellar companion with 31'' separation. The two stars are nearly identical twins, with very similar spectra and apparent magnitudes. Due to the high metallicity, these early… 
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  • C. Griffith
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    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2014
TLDR
It is argued that these challenges can be partially surmounted by a combination of selected wavelength sampling of optical and infrared measurements and, when possible, the joint analysis of transit and secondary eclipse data of exoplanets.
Gran Telescopio Canarias OSIRIS transiting exoplanet atmospheric survey: detection of potassium in XO-2b from narrowband spectrophotometry
We present Gran Telescopio Canarias (GTC) optical transit narrow-band photometry of the hot-Jupiter exoplanet XO-2b using the OSIRIS instrument. This unique instrument has the capabilities to deliver
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