The mass of Gliese 887b 4.2 times, and Gliese 887c – 7.6 times greater than the earth.
Researchers from the project RedDots confirmed the existence of two planetologie bodies orbiting the red dwarf Gliese 887, reports the Chronicle.info with reference to Browser.
Both of the newly discovered object belong to the category of so-called supertall. The mass of Gliese 887b 4.2 times, and Gliese 887c – 7.6 times greater than the earth.
One revolution around its star takes them is respectively 9.3 and 21.8 days. Orbit Gliese 887c is close enough to the inner edge of the habitable zone: the calculations show that the equilibrium temperature of the illuminated side of the exoplanet is about 80°C.
Also, the researchers were able to register a signal, which may correspond to a third super-earths with an orbital period of about 50 days. But to confirm this, open the necessary additional observations.
In the course of studying systems, the astronomers found that by the standards of the red dwarf Gliese 887 is a very calm object on its surface very small spots, and during the observations he did not make powerful flares. This allows us to hope that the exoplanet orbiting the stars, has maintained its atmosphere, and therefore may be subject to more detailed studies using observations of the next generation.
Red dwarf Gliese 887, also known as Lacaille 9352, takes the 11th place in the list closest to us star systems. It is located in the southern constellation Pisces at a distance of 10.7 light-years. Gliese 887 is approximately twice smaller and cooler than the Sun.