Two Earth like planets around one of the closest stars

Two Earth-like planets discovered around dwarf star


                          


Scientists have discovered two new Earth-like planets around one of the closest stars within our galactic neighbourhood.

The planets are located only 12.5 light years away orbiting the Teegarden star -- a red dwarf in the direction of the constellation of Aries, according to the study published in the journal Astronomy and Astrophysics.

Its surface temperature is 2,700 degrees Celsius, and its mass is only one-tenth that of the Sun, researchers said.

Even though it is so near, its faintness impeded its discovery until 2003.

They are just a little bigger than the Earth and are situated in the 'habitable zone' where water can exist as a liquid, according to the researchers.

"It is possible that the two planets are part of a larger system," said Stefan Dreizler, a researcher at the University of Gottingen.

Photometric campaigns on this star have been carried out with the Carlos Sanchez Telescope at the Teide Observatory in Spain, and with the network of telescopes of the Las Cumbres Observatory, among others.

"These studies demonstrate that the signals of the two planets cannot be due to the activity of the star, even though we could not detect the transits of the two new planets," said Victor 
Sanchez Bejar, from the Instituto de Astrofisica de Canarias (IAC) in the Canary Islands.

For the transit method to be viable, the planets must pass across the face of the stellar disc and block some of the light from the star during a short time, which means that it must lie on a line joining the Sun and the Earth.
Two Earth like planets around one of the closest stars Two Earth like planets around one of the closest stars Reviewed by newallnow on June 19, 2019 Rating: 5

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