Volunteers helped find two unique brown dwarf

Civilian scientists from the project “Backyard Worlds: Planet 9” has helped astronomers find two unique brown dwarf. Body were the most similar to the planets starlike objects that have ever been observed among the oldest stellar population of the milky Way. Preprint published on the website arXiv.org.

The project of a civil science “Backyard Worlds: Planet 9″supported by NASA, was launched in February 2017 at the portal Zooniverse. Its purpose is to search for brown dwarfs and low-mass stars in the immediate vicinity of the Solar system, as well as the elusive Ninth planet whose existence was predicted in 2016 Konstantin Batygin and Michael brown. It is assumed that its mass can be equal to 5-10 Earth masses, and it is in the 300-1000 astronomical units from the Sun. Civilian scientists involved in the project, working with archive images of infrared space telescope WISE, trying to find them previously unknown objects.

A team of astronomers led by Adam Schneider (Adam Schneider) from the University of Arizona announces the opening of the project two brown dwarfs WISEA WISEA 0414-5854 and 1810-1010 with unusual characteristics. Initially to find them on shots telescope WISE helped the volunteers, after which the facilities have been explored and studied using a spectrometer NIRES (Near-Infrared Echellette Spectrometer), installed on one of the Keck telescopes, spectrograph FIRE(Folded-port
Infrared Echellette) installed on one of the Magellan telescopes, and the instrument TripleSpecmounted on the Palomar Observatory telescope.

It turned out that the new facilities are the first known extreme subcarriage T-type. Their masses are in the range of 0.075−0.08 mass of Jupiter, estimated to be over ten billion years, and the effective temperature is 1300 Kelvin. The distance from the Sun to 1810-1010 and WISEA WISEA 0414-5854 estimated 14-67 52-94 and parsecs, respectively, both of them are characterized by a low metallicity ([Fe/H]≤ -1). Thanks to their characteristics, these two objects can be considered the most similar to planets brown dwarfs ever observed among the oldest stellar population of the milky Way. Their further study will allow us to understand the prevalence of such objects and their evolution.

The study of brown dwarfs helps to know a lot about them, in particular, found out that the wind they are much stronger than those that are raging on Jupiter and the atmospheres of dwarfs , there are layers of clouds.

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