List of extrasolar planets detected by microlensing

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 [1] 0.010+0.015
−0.005		 0.62+0.22
−0.16		 2008
MOA-2007-BLG-400Lb [2] 0.83+0.49
−0.31		 0.72+0.38
−0.16
or 6.5+3.2
−1.2		 2008
MOA-2008-BLG-310Lb [3] 0.23 ± 0.05 1.25 ± 0.10 2009
MOA-2009-BLG-387Lb [4] 2.56+4.15
−1.58		 1.82+0.86
−0.73		 2011
MOA-2009-BLG-319Lb [5] 0.16 1.87 2010
OGLE-2006-BLG-109Lb [6] 0.73 2.31 2008
OGLE-2005-BLG-169Lb [7] 0.04 2.76 2006
OGLE-2005-BLG-390Lb [8] 0.02 2.76 2006
OGLE-2007-BLG-368Lb [9] 0.07 3.14 2009
OGLE-2005-BLG-071Lb [10] 3.8 +0.3
−0.4
or 3.4 ± 0.3		 3.6 ± 0.2
or 2.1 ± 0.1		 2005
OGLE-2003-BLG-235Lb [11] 2.6 +0.8
−0.6		 4.3+2.5
−0.8		 2004
OGLE-2006-BLG-109Lc [6] 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. http://iopscience.iop.org/0004-637X/684/1/663/fulltext. 
  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. http://iopscience.iop.org/0004-637X/698/2/1826/fulltext. 
  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. http://iopscience.iop.org/0004-637X/711/2/731/fulltext. 
  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". The Astrophysical Journal 728 (2): article number 120. arXiv:1010.1809. Bibcode 2011ApJ...728..120M. doi:10.1088/0004-637X/728/2/120. http://authors.library.caltech.edu/23045/1/Miyake2011p13143Astrophys_J.pdf. 
  6. ^ a b 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. http://www.iop.org/EJ/article/1538-4357/644/1/L37/20518.html. 
  8. ^ Beaulieu, J.-P. et al. (January 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. http://www.nature.com/nature/journal/v439/n7075/full/nature04441.html. 
  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. http://iopscience.iop.org/0004-637X/710/2/1641/fulltext/. 
  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. http://iopscience.iop.org/0004-637X/695/2/970/fulltext/. 
  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. http://iopscience.iop.org/1538-4357/647/2/L171/fulltext/. 

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