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Revision as of 23:07, 23 December 2011 by Mike s (talk | contribs) (add reference)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)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 | 0.01 | 0.62 | 2008 |
MOA-2007-BLG-400Lb | 0.88 | 0.83 | 2008 |
MOA-2008-BLG-310Lb | 0.23 | 1.24 | 2009 |
MOA-2009-BLG-387Lb | 2.58 | 1.79 | 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 | 3.46 | 3.53 | 2005 |
OGLE-2003-BLG-235Lb | 2.64 | 4.31 | 2004 |
OGLE-2006-BLG-109Lc | 0.27 | 4.54 | 2008 |
References
- 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.
- 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.
- 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.
- ^ 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.
- 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.
- 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.
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ignored (help) - 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.
External links
- "Candidates detected by microlensing". The Extrasolar Planets Encyclopaedia. Retrieved 2011-01-20.
- "Exoplanets Data Explorer". Retrieved 2011-01-20.