SIMBAD references

2007ApJ...671.2115B - Astrophys. J., 671, 2115-2128 (2007/December-3)

XO-2b: transiting hot Jupiter in a metal-rich common proper motion binary.

BURKE C.J., McCULLOUGH P.R., VALENTI J.A., JOHNS-KRULL C.M., JANES K.A., HEASLEY J.N., SUMMERS F.J., STYS J.E., BISSINGER R., FLEENOR M.L., FOOTE C.N., GARCIA-MELENDO E., GARY B.L., HOWELL P.J., MALLIA F., MASI G., TAYLOR B. and VANMUNSTER T.

Abstract (from CDS):

We report on a V=11.2 early K dwarf, XO-2 (GSC 03413-00005), that hosts a Rp=0.98±0.030.01RJ, 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, 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 K dwarf stars have a mass and radius close to solar, M*=0.98±0.02 M and R*=0.97±0.020.01 R. The high proper motion of XO-2 results from an eccentric orbit (Galactic pericenter, Rper<4 kpc) well confined to the Galactic disk (Zmax∼100 pc). In addition, the phase-space position of XO-2 is near the Hercules dynamical stream, which points to an origin of XO-2 in the metal-rich, inner thin disk and subsequent dynamical scattering into the solar neighborhood. We describe an efficient Markov chain Monte Carlo algorithm for calculating the Bayesian posterior probability of the system parameters from a transit light curve.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Eclipsing - Stars: Planetary Systems - stars: individual (GSC 34130-0005 (read: GSC 3413-5)) - Techniques: Photometric - Techniques: Radial Velocities

Nomenclature: Text: XO-2b. Table 2: XO-NW (Nos 2N, 2S).

Simbad objects: 17

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2007ApJ...671.2115B and select 'bookmark this link' or equivalent in the popup menu


2019.10.16-07:50:46

© Université de Strasbourg/CNRS

    • Contact