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Researchers discover a system with three Earth-sized planets
phys.org ^ | June 8, 2018 | Instituto de Astrofísica de Canarias

Posted on 06/08/2018 9:54:31 AM PDT by Red Badger

Credit: Instituto de Astrofísica de Canarias

__________________________________________________________________________

The Instituto de Astrofísica de Canarias (IAC) and the University of Oviedo present today the discovery of two new planetary systems, one of them hosting three planets the same size as the Earth.

The information about these new exoplanets has been obtained from the data collected by the K2 mission of NASA's Kepler satellite, which started in November 2013. The work, which will be published in the Monthly Notices of the Royal Astronomical Society (MNRAS), reveals the existence of two new planetary systems detected from the eclipses they produce in the stellar light of their respective stars. In the research team led jointly by Javier de Cos at the University of Oviedo, and Rafael Rebolo at the IAC, participate, along with researchers from these two centres, others from the University of Geneva and the Gran Telescopio Canarias (GTC).

The first exoplanetary system is located in the star K2-239, characterized as a red dwarf type M3V from observations made with the Gran Telescopio Canarias (GTC), at the Roque de los Muchachos Observatory (Garafía, La Palma). It is located in the constellation of the Sextant at 50 parsecs from the sun (at about 160 light years). It has a compact system of at least three rocky planets of similar size to the Earth (1.1, 1.0 and 1.1 Earth radii) that orbit the star every 5.2, 7.8 and 10.1 days, respectively.

The other red dwarf star, called K2-240, has two super-Earth-like planets about twice the size of our planet. The atmospheric temperature of red dwarf stars around which these planets revolve is 3,450 and 3,800 K respectively, almost half the temperature of the sun. These researchers estimate that all planets discovered will have temperatures tens of degrees higher than those of Earth due to the strong radiation they receive in these close orbits to their stars.

Future observation campaigns with the new James Webb space telescope will characterize the composition of the atmospheres of the discovered planets. Spectroscopic observations with the ESPRESSO instrument, installed in the Very Large Telescope (VLT), of the European Southern Observatory (ESO), or with future spectrographs in the GTC or in new astronomical facilities, such as the ELT or the TMT, will be crucial to determine the masses, densities and physical properties of these planets.

Explore further: Astronomers find Earth-like planets capable of hosting water

More information: Díez Alonso, J.I. et al. Two planetary systems with transiting Earth-size and super-Earth planets orbiting late-type dwarf stars, Monthly Notices of the Royal Astronomical Society. arxiv.org/abs/1806.01181

Journal reference: Monthly Notices of the Royal Astronomical Society

Provided by: Instituto de Astrofísica de Canarias


TOPICS: Arts/Photography; Astronomy; Education; Science
KEYWORDS: k2239; xplanets
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1 posted on 06/08/2018 9:54:31 AM PDT by Red Badger
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To: SunkenCiv

X-O Planet Ping!................


2 posted on 06/08/2018 9:54:54 AM PDT by Red Badger (When Obama and VJ go to prison for treason, will Roseanne get her show back?...)
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To: Red Badger

NASA funding time again.


3 posted on 06/08/2018 9:56:04 AM PDT by MuttTheHoople (Yes, Liberals, I question your patriotism)
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To: MuttTheHoople

Hussein only wanted NASA to do outreach to Muslims.


4 posted on 06/08/2018 9:57:03 AM PDT by TBP (Progressives lack compassion and tolerance. Their self-aggrandizement is all that matters.)
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To: MuttTheHoople

Instituto de Astrofísica de Canarias located in the Canary Islands. ................


5 posted on 06/08/2018 9:59:47 AM PDT by Red Badger (When Obama and VJ go to prison for treason, will Roseanne get her show back?...)
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To: TBP
"Hussein only wanted NASA to do outreach to Muslims."

It's Kepler's Law, not Mustafa's Law.

6 posted on 06/08/2018 10:02:43 AM PDT by wmileo
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To: Red Badger

If viewed from outside our solar system, Venus would be the holy grail of “Earth-like” planets: A rocky planet that is almost exactly the same size and mass as Earth and that orbits a G-type main sequence star within the apparent “Goldilocks zone.”


7 posted on 06/08/2018 10:08:21 AM PDT by Bubba_Leroy (The Obamanation has ended!)
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To: Bubba_Leroy

And it has water.......................


8 posted on 06/08/2018 10:09:31 AM PDT by Red Badger (When Obama and VJ go to prison for treason, will Roseanne get her show back?...)
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To: Red Badger

It is located in the constellation of the Sextant at 50 parsecs

Wow, that’s FAST!


9 posted on 06/08/2018 10:10:51 AM PDT by tet68 ( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
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To: Red Badger

Being that close to their sun, they will all be tidal locked, with one hemisphere always noon, and the other side always midnight.

If these planets are too hot, and they would be on the noon side, the reverse would be too cold.

Just imagine the dynamics of the atmosphere if they have any. Warm air rising on the sun side, cold air falling on the reverse... How would the winds flow? Could humans survive in the periphery of the sun side, where it is always dawn/evening twilight?


10 posted on 06/08/2018 10:17:46 AM PDT by Alas Babylon! (MAGAMarchOnWashington.com)
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To: MuttTheHoople

They can’t even park on the moon again.


11 posted on 06/08/2018 10:20:40 AM PDT by bmwcyle (People who do not study history are destine to believe really ignorant statements.)
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To: Red Badger

If Earth did not have a strong geomagnetic field and a large moon it would probably look a lot more like Venus. As far as I know, we have not yet developed a means to determine if “Earth-like” exoplanets have either.


12 posted on 06/08/2018 10:24:59 AM PDT by Bubba_Leroy (The Obamanation has ended!)
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To: Red Badger
Are they warring with each other yet?

-PJ

13 posted on 06/08/2018 10:28:52 AM PDT by Political Junkie Too (The 1st Amendment gives the People the right to a free press, not CNN the right to the 1st question.)
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To: Bubba_Leroy

Nope, not yet..................


14 posted on 06/08/2018 10:31:24 AM PDT by Red Badger (When Obama and VJ go to prison for treason, will Roseanne get her show back?...)
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To: Red Badger

Manny, Moe, and Jack.


15 posted on 06/08/2018 10:32:02 AM PDT by BenLurkin (The above is not a statement of fact. It is either satire or opinion. Or both.)
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To: BenLurkin

Huey, Dewey and Louie................


16 posted on 06/08/2018 10:33:33 AM PDT by Red Badger (When Obama and VJ go to prison for treason, will Roseanne get her show back?...)
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To: Red Badger
Rules...


17 posted on 06/08/2018 10:37:43 AM PDT by BenLurkin (The above is not a statement of fact. It is either satire or opinion. Or both.)
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To: Red Badger

How they “find” and estimate the size of these planets is underwhelming.

Find a star.

Observe light flickers that indirectly indicate something passing between the star and the observer.

Quantify the reduction in light, and translate that to the size of the object.

I know you have to start somewhere, but this isn’t exactly exciting.


18 posted on 06/08/2018 10:40:01 AM PDT by brownsfan (Behold, the power of government cheese.)
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To: brownsfan

Well, it sure beats the old method....................


19 posted on 06/08/2018 10:41:43 AM PDT by Red Badger (When Obama and VJ go to prison for treason, will Roseanne get her show back?...)
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To: KevinDavis; annie laurie; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; Mmogamer; ...
Thanks Red Badger.
 
X-Planets
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20 posted on 06/08/2018 10:45:22 AM PDT by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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