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ESO observation thought to show the birth of a giant planet

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February 28, 2013

An artist's impression of the gas giant planet thought to be forming in the orbit of young...

An artist's impression of the gas giant planet thought to be forming in the orbit of young star HD 100546 (Image:ESO)

Image Gallery (6 images)

The European Southern Observatory's Very Large Telescope (VLT) has been used to observe what is thought to be the formation of a gas giant similar to Jupiter. The candidate planet resides within a disk of dust and gas surrounding the young star HD 100546, located 335 light-years away.

The candidate planet lies some 70 times as far from HD 100546 than the distance between the Earth and the Sun. This large distance has made its identification as a forming planet somewhat controversial, as it does not fit with current theories. It is unclear, however, whether the planet may have moved to its current position from one closer to its star.

Since the discovery of the first exoplanet around a sun-like star in 1995, several hundred planetary systems have been identified, leading to a significant growth in the theory of how planets are formed. However, up until now, there has been no direct observation (and therefore, confirmation) of the process. If the VLT's observations are confirmed, then the discovery will significantly aid our understanding of the process, allowing astronomers to test current theories for the first time.

Images of the gas and dust surrounding HD 100546, taken by the NASA/ESA Hubble Space Teles...

Images of the gas and dust surrounding HD 100546, taken by the NASA/ESA Hubble Space Telescope (left) and the NACO system on the ESO's VLT (right) (Image:ESO)

Sasha Quanz, the leader of the team that made the discovery, commented on the significance of the find, stating that “So far, planet formation has mostly been a topic tackled by computer simulations […] if our discovery is indeed a forming planet, then for the first time scientists will be able to study the planet formation process and the interaction of a forming planet and its natal environment empirically at a very early stage.”

The observation itself was made using a special coronagraph on the NACO adaptive optics instrument on the VLT, which operates at near-infrared wavelengths. Though it is most likely that the observation is that of a planet forming, the results are yet to be corroborated, and further observations are scheduled to take place in order to confirm the discovery.

Other possible explanations could be that the readings are the result of interference from a background source, or that the planet in question is in fact fully formed and has been ejected from its original orbit closer to the star. That said, if the new object is confirmed as the birth of a planet, then it will become a unique and invaluable asset in the ongoing study of the formation process of new planetary systems.

Scroll down for a video fly-through of the environment around the young star HD 100546.

Source: ESO

About the Author
Chris Wood Chris recently graduated from the University of Exeter with a degree in Politics and Ancient History. Based in the U.K., he has an enthusiasm for technology of all kinds, specializing in mobile tech and games. In his spare time you might find him running, playing music, following NFL (Pats fan) or fueling his ever growing Swiss watch obsession.   All articles by Chris Wood
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1 Comment

Great fly-through video. Same as our Jupiter complete with moons.

What happens when we find the answer to the meaning of life? We all die...me, you, the earth, the galaxy, the universe...and we are re-born from the dust.

Threesixty
1st March, 2013 @ 12:24 am PST
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