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Publication of the first direct UV-ray image of the exoplanet

Sunday, May 2, 2021 11:00 AM (GMT + 7)

For the first time, direct ultraviolet images of an exoplanet – the exoplanet – clearly appear before humans, suggesting it is a giant world taking shape.

According to Sci-News, the aforementioned exoplanet, named PDS 70b, orbits an orange dwarf star 370 light-years away, located in the constellation Centaurus.

This is a very young star system with a parent star of only 5.4 million years old, and the photographed giant planet is only in its infancy. But this “baby baby” is extremely gigantic: it is about the size of Jupiter of the solar system, but five times heavier than Jupiter, or more than 1,590 times more than Earth!

The first photo with PDS 70b looms. Previously, to study an exoplanet, people could not look at it but could only learn and reconstruct through spectral data, radiation obtained by telescopes – Photo: Josheph DePasquale, STScI

The team led by Dr. Yifan Zhou, an astronomer from the University of Texas in Austin (USA), used NASA’s famous Hubble space telescope / ESA to capture the PDS 70b with ultraviolet light ( UV rays).

The parent star PDS 70 actually contains up to 2 protoplanets, PDS 70b and PDS 70c, but only PDS 70b has actually formed and can be photographed. The planet is located 21 astronomical units (AU) from its parent star, as far away as Uranus is to the Sun. 1 AU is the distance from Earth to the Sun.

PDS 70c formed later will be as far as 34.5 AU, equivalent to the distance Neptune – Sun.

This orange dwarf also contains another large disk of gas and dust stretching from a distance of 40 AU onwards, where additional protoplanets could also form.

The PDS 70b-imaged planet is experiencing a constant increase in mass, but a sharp decline. Although in 5.4 million years it has gained 5 times the mass of Jupiter, but in the next 1 million years it will only increase about 1% of Jupiter’s mass.

In their publication in the Astronomical Journal, scientists say this is a great opportunity to study the birth of a planet.

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