Free flotation planetary mass objects (FFOP) have a mass comparable to that of a planet, but exist in isolation without orbit around a star. One of these objects, Simp 0136, is not gravitationally linked to any star and vague aimlessly by the Milky Way. It is about 20 light years from the earth and has a mass 13 times higher than that of Jupiter. It is believed that it has the structure and chemical composition of a giant gaseous planet like Jupiter, but its true nature has not yet been determined.
Among the planetary mass objects that float are the “floating planets”, which formed within a star system but were expelled from it due to the gravitational influence of other planets, and the ‘brown dwarfs’, which were formed as normal stars in molecular clouds of dense gas and dust, but did not experience a stable fusion due to lack of mass. However, it has not yet been determined if SIMP 0136 belongs to any of these categories.
Although galactic discs already existed in the first billions of the universe, the galaxy called ‘Big Wheel’ is surprisingly similar to the largest albums of today in terms of size and mass.
Why observe Simp 0136 in detail?
Simp 0136 is the body of planetary mass of brighter free flotation in the boreal sky, which makes it an ideal objective for the weather of exoplanets. However, the reasons for studying are not limited to its brightness. Not belonging to any star and existing in isolation, it is not influenced by the star light when observed. In addition, it has a very short rotation speed, about 2 hours and 40 minutes, which allows you to effectively observe the entire globe.
However, the low surface temperature of SIMP 0136, about 825 ° C, hinders its observation in visible light from Earth. The object shines intensely in the infrared due to its low surface temperature. Therefore, the Boston University team in charge of the research, used the James Webb space telescope (JWST), which has excellent performance in infrared light. They used two types of instruments: the near infrared spectrograph (Nirspec) and the Middle Infrared Instrument (MIRI).
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