Title: OGLE-2013-BLG-1761Lb: A Massive Planet Around an M/K Dwarf,
Abstract: We report the discovery and the analysis of the planetary microlensing event,
OGLE-2013-BLG-1761. There are some degenerate solutions in this event because
the planetary anomaly is only sparsely sampled. But the detailed light curve
analysis ruled out all stellar binary models and shows that the lens to be a
planetary system. There is the so-called close/wide degeneracy in the solutions
with the planet/host mass ratio of $q \sim (7.5 \pm 1.5) \times 10^{-3}$ and $q
\sim (9.3 \pm 2.9) \times 10^{-3}$ with the projected separation in Einstein
radius units of $s = 0.95$ (close) and $s = 1.19$ (wide), respectively. The
microlens parallax effect is not detected but the finite source effect is
detected. Our Bayesian analysis indicates that the lens system is located at
$D_{\rm L}=6.9_{-1.2}^{+1.0} \ {\rm kpc}$ away from us and the host star is an
M/K-dwarf with the mass of $M_{\rm L}=0.33_{-0.18}^{+0.32} \ M_{\odot}$ orbited
by a super-Jupiter mass planet with the mass of $m_{\rm P}=2.8_{-1.5}^{+2.5} \
M_{\rm Jup}$ at the projected separation of $a_{\perp}=1.8_{-0.5}^{+0.5} \ {\rm
AU}$. The preference of the large lens distance in the Bayesian analysis is due
to the relatively large observed source star radius. The distance and other
physical parameters can be constrained by the future high resolution imaging by
ground large telescopes or HST. If the estimated lens distance is correct, this
planet provides another sample for testing the claimed deficit of planets in
the Galactic bulge.