Astronomers discover three compact planetary systems
Astronomers discover three compact planetary systems

Astronomers discover three compact planetary systems

Astronomers discover three compact planetary systems:

Astronomers discover three compact planetary systems: The scattered astronomers of the Planeta Materia Project (DMPP) have discovered three new planetary systems: DMPP-1, 2 and 3, which house six short-term exoplanets. These planets are very close to their original stars and have a surface temperature between 1,100 and 1,800 ° C (2,012–3,272 ° F).

“These new discoveries are very promising for future studies,” said Professor Carroll Havelwell, head of astronomy at the Open University and principal investigator of the DMPP project.

“We should allow the relationship between the mass, size and composition of the planets outside our solar system to be measured.”

DMPP-1 is a 2 billion year old F8V type star located about 204 light years away.

Also known as HD 38677, it houses a compact planetary system with an orbital period of 2.9-19 days, comprising four large planets: DMPP-1B, C, D and E.

DMPP-1C, D and E are super-terrestrial planets with a mass between 3 and 10 of the Earth. DMPP-1b is a planet similar to Neptune with approximately 24 Earth masses.

“DMPP-1 organizes a truly important planet with three low mass exoplanets whose structure we can measure,” said Dr. Daniel Staub, an astronomer at the Faculty of Physical Sciences at the Open University and the Rutherford Appeals Laboratory.

DMPP-2, also known as HD 11231, is an F5V type star of 2,000 million years to about 452 light years from Earth.

Its only known planet, the DMPP-2B, is a giant planet in near orbit, which is about half of Jupiter in a 5.2-day orbit.

The DMPP-3, also known as HD 42936, is a binary stellar system of 6 billion years at a distance of approximately 153 light years.

The primary star in the binary system, DMPP-3A, is a K0V type star that rotates slowly.

It houses a super-Earth planet, DMPP-3Ab, in 6.7-day orbit, and has a star companion, DMPP-3B.

“DMPP-3B has a minimum mass at the boundary between brown dwarfs and low-mass stars, and is probably a dwarf with stable hydrogen burning. It is in the orbit of 507 days, ”the astronomers explained.

“The DMPP-3 was a big surprise, we were looking for a small signal that indicated a planet in orbit, of low mass, but the first thing we found was due to a large signal that we did not expect,” Dr. John said Barnes, an Open University researcher.

The astronomers used ESO’s high-precision radial velocity plane (HARPS) finder to observe these planetary systems.

They discovered that the surface temperature of the planet is between 1,100 and 1,800 ° C.

“At these temperatures, the atmosphere and even the rocky surface of the planet can be lost, and some of this material expands to form thin layers of gas,” he said.

“This shroud filters the star’s light, producing clues that allow the team to eject small traces of stars with these unusual and very hot planets.”

“With more studies, the chemical composition of the roof can be measured, which reveals the type of rock on the surface of the hot planet.”

“Now we can see how planets are formed in general, and if our own planets are specific,” said Professor Haswell.

For example, we still do not know if it is a coincidence that in the solar system, Earth and Venus are the largest rock objects and the largest fraction of their mass is made of iron. “

The findings were published in three articles in the journal Nature Astronomy.

Astronomers discovered three compact planetary systems

Astronomers discovered three compact planetary systems: the scattered astronomers of the Planeta Materia Project (DMPP) discovered three new planetary systems: DMPP-1, 2 and 3, which houses six short-lived exopartets.

These planets are very close to their original stars and have a surface temperature between 1,100 and 1,800 ° C (2,012–3,272 ° F). These new discoveries are very promising for future studies, “said Professor Carroll Havel, head of astronomy at the Open University and the principal investigator of the DMPP project, which allows us to connect the mass, size and composition of the planets outside of our solar system, it can be measured, it can be measured DMPP-1 is a F8V-type star, 2,000 million years old, located about 204 light years away, also known as HD 38677 As such, it maintains a compact planetary system with an orbital period of 2.9-19 days, comprising four large planets: DMPP-1B, C, D and E. DMPP-1C, D and E are 3 more from Earth.

There are super-terrestrial planets with a mass between 10. DMPP- 1B is a planet similar to Neptune with approximately 24 Earth masses DMPP-1 is a really important planet with three low mass exoplanets Alphabetization, whose structure Dr. astronomer and Rutherford appeal laboratory in the faculty of physics, “Open University can measure.

Daniel Stob said. DMPP-2, also known as HD 11231, is an F5V type star of 2 billion years about 452 light years from Earth. Its only known planet, DMPP-2B, is a massive planet in near orbit, about half that of Jupiter in a 5.2-day orbit. The DMPP-3, also known as HD 42936, is a binary stellar system of 6 billion years at a distance of approximately 153 light years.

The primary star in the binary system, DMPP-3A, is a K0V type star that rotates slowly. It is a 6.7-day super-Earth planet in orbit, DMPP-3Ab, and a star companion, DMPP-3B. DMPP-3B has a minimum mass at the boundary between brown dwarfs and low mass stars, and is probably dwarf with stable hydrogen combustion.

It is in the orbit of 507 days, “the astronomers explained. DMPP-3 was a big surprise, we were looking for a small signal that indicated a less orbiting mass around a planet in orbit, but the first thing we found was due to a large signal we didn’t expect. ” Dr. John said Barnes, a researcher at the Open University.

The astronomers used ESO’s high-speed radial plane (HARPS) finder to observe these planetary systems. The planet’s surface temperature was found to be between 1,100 and 1,800 °. At these temperatures, the atmosphere and even the rocky surface of the planet can be lost, and part of this material forms thin layers of gas. “He said. This shroud produces stellar light, providing clues that allow the team to exclude small star trails with these unusual and very hot stars. With more studies, the chemical composition of the roof can be measured, revealing the type of rock on the surface of the hot planet. Now we can see how planets are formed in general, and if our own planets are specific, “said Professor Haswell.

For example, we still don’t know if this is the coincidence that Earth and Venus are the most numerous in the solar system. Large rocks are objects and the largest fraction of their mass is made of iron. The findings were published in three articles in the journal Nature Astronomy.

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