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Astronomers find planetary system with gas giant exoplanet and white dwarf companion 5nvklj





Astronomers find planetary system with gas giant exoplanet and white dwarf companion 9tpt39

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Astronomers find planetary system with gas giant exoplanet and white dwarf companion

Dragon
Dragon
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Astronomers find planetary system with gas giant exoplanet and white dwarf companion Empty Astronomers find planetary system with gas giant exoplanet and white dwarf companion

Post by Dragon Tue Jan 19, 2021 1:39 am

Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered an interesting extrasolar planetary system consisting of a K-dwarf host star, a Jupiter-sized planet and a white dwarf.

According to the paper, the parent star TOI-1259A has a radius of about 0.71 solar radii and is some 25% less massive than our sun. It has a metallicity at a level of about -0.5 and effective temperature of around 4,775 K.

The exoplanet, designated TOI-1259Ab, is the size of Jupiter but approximately 56% less massive than the solar system's biggest planet. The alien world orbits its host every 3.48 days, at a distance of about 0.04 AU from it. The planet's equilibrium temperature was estimated to be approximately 963 K.

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Dragon
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Astronomers find planetary system with gas giant exoplanet and white dwarf companion Empty Re: Astronomers find planetary system with gas giant exoplanet and white dwarf companion

Post by Dragon Tue Jan 19, 2021 1:40 am

Astronomers find planetary system with gas giant exoplanet and white dwarf companion 2-astronomersf
Credit: Martin et al., 2021.

SDSS image of the planet host TOI-1259A and its bound white dwarf companion TOI-1259B.

Source / Image Courtesy


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Astronomers find planetary system with gas giant exoplanet and white dwarf companion 334pu7m

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Dragon
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Astronomers find planetary system with gas giant exoplanet and white dwarf companion Empty Re: Astronomers find planetary system with gas giant exoplanet and white dwarf companion

Post by Dragon Tue Jan 19, 2021 1:42 am



NASA discovers planet close to white dwarf


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Astronomers find planetary system with gas giant exoplanet and white dwarf companion 334pu7m

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    Current date/time is Wed Jun 23, 2021 6:39 pm