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CoRoT-7b的发现过程
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CoRoT-7b (previously named CoRoT-Exo-7b) [3][4] is an exoplanet orbiting the star CoRoT-7 in the constellation of Monoceros, 489 light-years (150 parsecs) from Earth.
CoRoT-7 b is a super Earth exoplanet that orbits a K-type star. Its mass is 4.07660518 Earths, it takes 0.9 days to complete one orbit of its star, and is 0.017016 AU from its star. Its discovery was announced in 2009.
CoRoT-7b, the first extrasolar planet that was shown to be a rocky planet like Earth. CoRoT-7b orbits a main-sequence star, CoRoT-7, of spectral type K0 (an orange star, cooler than the Sun) that is about 500 light-years from Earth. CoRoT-7 was discovered in 2009 by the French satellite CoRoT
CoRoT-7 (TYC 4799-1733-1) is a binary star system made up of a late G-type star [1] and a M-dwarf star that was discovered in 2021. [3] The primary star has three exoplanets, [5] including CoRoT-7b, a super-Earth exoplanet that is remarkable due to its extremely high temperature (around 2000 °C) and very short orbital period, around 20 hours. [6][7] It was the first exoplanet shown to be ...
Corot 7b与地球比较在迄今为止所有已知直径的系外行星中，Corot 7b行星直径是最小的之一，约为地球的1.7倍。其质量约为地球的5.6-11倍，这表明它可能是一颗岩石行星。该行星的轨道十分靠近其母星COROT-7，轨道周期为20小时。2009年10月天文学家探测到这颗行星，该行星距离地球480光年，环绕一颗恒星 ...
The exoplanet CoRoT-7b is the seventh planet detected via transit photometry (Fig. 1) by the European space telescope, CoRoT (Léger et al. 2009). With a radius of ~1.6 Earth radii (Fig. 2), this planet is the first terrestrial-like planet found outside our solar system. CoRoT-7b revolves around its central star in a very short-period orbit of 20 h making this planet one of the few with ...
CoRoT-7b is very likely the first Super-Earth with a measured radius. This object illustrates what will probably become a common situation with missions such as Kepler, namely the need to establish the planetary origin of transits in the absence of a firm radial velocity detection and mass measurement.
The discovery of CoRoT-7b, a planet of radius 1.68 +/- 0.09 R_E, mass 4.8 +/- 0.8 M_E and orbital period of 0.854 days demonstrates that small planets can orbit extremely close to their star. We use knowledge of hot Jupiters, mass loss estimates and models for the interior structure and evolution of planets to understand its composition, structure and evolution. The inferred mass and radius of ...
The dominant frequency in the power spectrum was found at 23 days, which corresponds to the rotation period of CoRoT-7. The 0.8535 day period of CoRoT-7b planetary candidate was detected with an amplitude of 3.3 m s -1. Most other frequencies, some with amplitudes larger than the CoRoT-7b signal, are most likely associated with activity.
CoRoT's transit data, on the other hand, make the geometry of CoRoT-7b's orbit definable and allow precise mass determination. Image: The star CoRoT-7 is located towards the constellation of Monoceros (the Unicorn) at a distance of about 500 light-years.