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List of exoplanets detected by microlensing

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This is the list of 12 extrasolar planets detected by microlensing, sorted by projected separations. To find planets using that method, the background star is temporarily magnified by a foreground star because of the gravity that bends light. If the foreground star has a planet, the light from background star would be slightly brighter than the star with no planet. Studying the brightness difference of background star between the foreground star with planets and foreground star with no planets, then mass can be estimated. The projected separation can be determined from how much the light bended.

The most massive planet detected by microlensing is OGLE-2005-BLG-071Lb, which masses 3.5 MJ; the least massive is MOA-2007-BLG-192Lb, which masses 0.010 MJ or 3.3 M. The widest separation between a planet and a star is OGLE-2006-BLG-109Lc, which is 4.5 AU; the shortest separation is MOA-2007-BLG-192Lb, which is 0.62 AU.

There are 2 members of the multi-planet systems.

Yellow rows donate the members of the multi-planet system

Planet Mass (MJ) Projected separation (AU) Year of discovery
MOA-2007-BLG-192Lb 0.010
−0.005
0.62
−0.16
2008
MOA-2007-BLG-400Lb 0.83
−0.31
0.72
−0.16
or 6.5
−1.2
2008
MOA-2008-BLG-310Lb 0.23 ± 0.05 1.25 ± 0.10 2009
MOA-2009-BLG-387Lb 2.56
−1.58
1.82
−0.73
2011
MOA-2009-BLG-319Lb 0.16 1.87 2010
OGLE-2006-BLG-109Lb 0.73 2.31 2008
OGLE-2005-BLG-169Lb 0.04 2.76 2006
OGLE-2005-BLG-390Lb 0.02 2.76 2006
OGLE-2007-BLG-368Lb 0.07 3.14 2009
OGLE-2005-BLG-071Lb 3.8
−0.4
or 3.4 ± 0.3
3.6 ± 0.2
or 2.1 ± 0.1
2005
OGLE-2003-BLG-235Lb 2.6
−0.6
4.3
−0.8
2004
OGLE-2006-BLG-109Lc 0.27 4.54 2008

References

  1. Bennett, D. P.; et al. (2008). "A Low-Mass Planet with a Possible Sub-Stellar-Mass Host in Microlensing Event MOA-2007-BLG-192". The Astrophysical Journal. 684 (1): 663–683. arXiv:0806.0025. Bibcode:2008ApJ...684..663B. doi:10.1086/589940.
  2. Dong, Subo; et al. (2009). "Microlensing Event MOA-2007-BLG-400: Exhuming the Buried Signature of a Cool, Jovian-Mass Planet". The Astrophysical Journal. 698 (2): 1826–1837. arXiv:0809.2997. Bibcode:2009ApJ...698.1826D. doi:10.1088/0004-637X/698/2/1826.
  3. Janczak, Julia; et al. (2010). "Sub-Saturn Planet MOA-2008-BLG-310Lb: Likely To Be In The Galactic Bulge". The Astrophysical Journal. 711 (2): 731. arXiv:0908.0529. Bibcode:2010ApJ...711..731J. doi:10.1088/0004-637X/711/2/731.
  4. Batista, Virginie; et al. (2011). "MOA-2009-BLG-387Lb: A massive planet orbiting an M dwarf". Astronomy and Astrophysics. 529. arXiv:1102.0558. Bibcode:2011yCat..35299102B. doi:10.1051/0004-6361/201016111.
  5. Miyake, N.; et al. (2011). "A Sub-Saturn Mass Planet, MOA-2009-BLG-319Lb" (PDF). The Astrophysical Journal. 728 (2). article number 120. arXiv:1010.1809. Bibcode:2011ApJ...728..120M. doi:10.1088/0004-637X/728/2/120.
  6. ^ Gaudi; et al. (2008). "Discovery of a Jupiter/Saturn Analog with Gravitational Microlensing". Science. 319 (5865): 927–930. arXiv:0802.1920. Bibcode:2008Sci...319..927G. doi:10.1126/science.1151947. PMID 18276883.
  7. Gould, A.; et al. (2006). "Microlens OGLE-2005-BLG-169 Implies That Cool Neptune-like Planets Are Common". The Astrophysical Journal Letters. 644 (1): L37 – L40. arXiv:astro-ph/0603276. Bibcode:2006ApJ...644L..37G. doi:10.1086/505421.
  8. Beaulieu, J.-P.; et al. (2006). "Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing". Nature. 439 (7075): 437–440. arXiv:astro-ph/0601563. Bibcode:2006Natur.439..437B. doi:10.1038/nature04441. PMID 16437108. {{cite journal}}: Unknown parameter |month= ignored (help)
  9. Sumi, T.; et al. (2010). "A Cold Neptune-Mass Planet OGLE-2007-BLG-368Lb: Cold Neptunes Are Common". The Astrophysical Journal. 710 (2): 1641–1653. arXiv:0912.1171. Bibcode:2010ApJ...710.1641S. doi:10.1088/0004-637X/710/2/1641.
  10. Dong, Subo; et al. (2009). "OGLE-2005-BLG-071Lb, the Most Massive M Dwarf Planetary Companion?". The Astrophysical Journal. 695 (2): 970–987. Bibcode:2009ApJ...695..970D. doi:10.1088/0004-637X/695/2/970.
  11. Bennett, David P.; et al. (2006). "Identification of the OGLE-2003-BLG-235/MOA-2003-BLG-53 Planetary Host Star". The Astrophysical Journal Letters. 647 (2): L171 – L174. arXiv:astro-ph/0606038. Bibcode:2006ApJ...647L.171B. doi:10.1086/507585.

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