CoRoT-7
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COROT-7 (TYC 4799-1733-1) is a magnitude 11.7 main sequence orange dwarf star, and thus is slightly smaller and cooler than the Sun. This star is located in the Monoceros constellation.[1]
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Location and properties
The star is located in the LRa01 field of view of the COROT spacecraft. According to the project website this field is in the Monoceros constellation.[1] The discovery paper lists the stellar properties as being a G9V type star with a temperature of 5275 K, a radius of about 87% of the Sun and a mass of about 93% of the Sun. The star has roughly the same amount of metals as the Sun: the quantity [M/H], which is the base-10 logarithm of the ratio of the star's metal abundance (given by the ratio of metals to hydrogen) to that of the Sun is 0.03 ± 0.06, which corresponds to a range 93% - 123% of the solar metal abundance with a best fit value of 107%. The star is estimated to be about 150 parsecs away and with an age in the range 1.2 – 2.3 billion years, is younger than our own star which has an age of 4.6 billion years.[2]
This star has been reported to be seismically active, making the confirmation process for the planet more difficult.[3]
Planetary system
The star is reported to be orbited by the super-Earth extrasolar planets COROT-7b and COROT-7c.[4] The discovery of the inner planet was made using the astronomical transit method by the COROT program. CoRoT-7b is notable for its small reported size.[5]
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See also
- COROT - an operational French-led ESA planet-hunting mission spacecraft, launched in 2006
References
External links
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