| 3 | Characterizing microlensing planetary system OGLE-2014-BLG-0676Lb with adaptive optics imaging显示文摘We constrain the host-star flux of the microlensing planet OGLE-2014-BLG-0676 Lb using adaptive optics(AO)images taken by the Magellan and Keck telescopes.We measure the flux of the light blended with the microlensed source to be K=16.79±0.04 mag and J=17.76±0.03 mag.Assuming that the blend is the lens star,we find that the host is a 0.73_(-0.29)^(+0.14)M_(⊙)star at a distance of2.67_(-1.41)^(+0.77)kpc,where the relatively large uncertainty in angular Einstein radius measurement is the major source of uncertainty.With mass of M_(p)=3.68_(-1.44)^(+0.69)M_J,the planet is likely a'super Jupiter'at a projected separation of r_(⊥)=4.53_(-2.50)^(+1.49)AU,and a degenerate model yields a similar M_p=3.73_(-1.47)^(+0.73)M_(J)at a closer separation of r_(⊥)=2.56_(-1.41)^(+0.84)AU.Our estimates are consistent with the previous Bayesian analysis based on a Galactic model.OGLE-2014-BLG-0676 Lb belongs to a sample of planets discovered in a'secondgeneration'planetary microlensing survey and we attempt to systematically constrain host properties of this sample with high-resolution imaging to study the distribution of planets. | 解小佳 东苏勃 Yossi Shvartzvald Andrew Gould Andrzej Udalski Jean-Philippe Beaulieu Charles Beichman Laird Miller Close Calen B.Henderson Jared R.Males Jean-Baptiste Marquette Katie M.Morzinski Christopher R.Gelino | 2021 | Research in Astronomy and Astrophysics2021，21，12： | 0 |
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