OGLE-2016-BLG-1190Lb

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OGLE-2016-BLG-1190Lb
Discovery
Discovered by Ryu, Y.-H. et al [1]
Discovery site Spitzer Space Telescope [1]
Discovery date2017 [1]
Gravitational microlensing [1]
Orbital characteristics
2.17 AU (325,000,000 km) [2]
Eccentricity 0.42 [2]
1223.6 [2] d
Inclination 41.2 [2]
StarOGLE-2016-BLG-1190L [1]
Physical characteristics
Mass 13.38 [1] [2] MJ

    OGLE-2016-BLG-1190Lb is an extremely massive exoplanet, with a mass about 13.4 times that of Jupiter (MJ), or is, possibly, a low mass brown dwarf, orbiting the G-dwarf star OGLE-2016-BLG-1190L, located about 22,000 light years from Earth, in the constellation of Sagittarius, in the galactic bulge of the Milky Way. [1] [3] [4]

    Contents

    “Since the existence of the brown dwarf desert is the signature of different formation mechanisms for stars and planets, the extremely close proximity of OGLE-2016-BLG-1190Lb to this desert raises the question of whether it is truly a ‘planet’ (by formation mechanism) and therefore reacts back upon its role tracing the galactic distribution of planets," according to astronomers reporting the findings. [1] [5]

    Discovery

    The host star was discovered in June 2016 by the Optical Gravitational Lensing Experiment (OGLE) collaboration; the Spitzer Space Telescope observed the microlensing event a few days after its discovery. OGLE-2016-BLG-1190Lb is the first exoplanet discovered by microlensing with the Spitzer space telescope and the first exoplanet discovered lying near the planet/brown dwarf boundary. [1] [3] In addition, the discovery "is likely to be the first Spitzer microlensing planet in the Galactic bulge/bar," according to the initial reported study. [1]

    See also

    References

    1. 1 2 3 4 5 6 7 8 9 10 Ryu, Y.-H.; et al. (27 October 2017). "OGLE-2016-BLG-1190Lb: The FirstSpitzer Bulge Planet Lies Near the Planet/Brown-dwarf Boundary". The Astronomical Journal. 155: 40. arXiv: 1710.09974 . doi: 10.3847/1538-3881/aa9be4 . S2CID   54706921.
    2. 1 2 3 4 5 Staff (2017). "Planet OGLE-2016-BLG-1190L b". Extrasolar Planets Encyclopaedia . Retrieved 10 November 2017.
    3. 1 2 Nowakowski, Tomasz (6 November 2017). "Extremely massive exoplanet discovered in the Milky Way's bulge". Phys.org . Retrieved 10 November 2017.
    4. ↑ Bartels, Meghan (7 November 2017). "A Giant Exoplanet Is Hiding At The Center of the Milky Way Galaxy". Newsweek . Retrieved 10 November 2017.
    5. ↑ Wehner, Mike (7 November 2017). "Astronomers just spotted a planet so huge they aren't even sure it's really a planet". BGR . Retrieved 10 November 2017.
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