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540 ... Scientists have summarized the stars, brown dwarves, and planets around us

540 … Scientists have summarized the stars, brown dwarves, and planets around us

Astronomers have compiled a catalog of objects within 10 parsecs (36 light-years) of the solar system.These are stars, brown dwarves, exoplanets, etc. There is also a clear map.





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Astronomers have gathered a nice overview of space objects in our stellar neighborhood. It is an overview that is certainly not consistent. In the future, new creatures will appear on it and some of them may disappear.

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Céline Reylé of the French institute UTINAM and colleagues used the available data and compiled a catalog of objects 10 parsecs (33 light-years) away from us. A quick look at the stars, brown dwarves and exoplanets. Scientists took advantage of data from the Gaia satellite, which has been measuring the locations of hundreds of millions of stars with extreme accuracy for several years and measuring the distance between them.

Up to 10 leagues are:

  • 375 stars
  • 88 brown dwarves
  • 77 exoplanets

1 Parsec (PC)

A parsec is the distance that attains the angular dimension of one astronomical unit (the average distance between the Earth and the Sun is also known as 149.6 million kilometers).

1 piece = 3262 light years

In the case of stars, no major changes can be expected in the future. The most numerous group are red dwarves. You will not see anyone in the sky with the naked eye. Compared to the sun, it emits very little radiation. However, it is relatively easy to pick up for space shows, and the distance of 10 parsecs is relatively small.

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Brown dwarves emit less radiation. These are objects on the borders of planets and stars. Its masses range from 13 to about 80 Jupiter’s planets, and it is too small to ignite classical thermonuclear reactions inside them.

Finding a brown dwarf is not an easy task. When paired with a star, the methods are the same as those used on the outer planets – they depend on the dwarf’s effect on the parent star. If a brown dwarf moves through space alone, it can be difficult to find. In the case of proximal brown dwarves, infrared is mainly used.

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The closest brown dwarf is Luhman 16. The pair of brown dwarfs is only 6.5 light years away. The discovery was made thanks to photos from 2010 and 2011.

Exoplanets appear mainly due to their influence on the parent star. Some discoveries are being questioned later, so their number may decrease in our area.

The closest extrasolar planet can be found next to the closest star to the sun – Proximy Centauri. Recent observations indicate that there may be as many as two planets orbiting the red dwarf.

Discovering that scientists are tiptoeing: We may be looking at an image of the planet near Proxima Centauri

Of the 375 stars, 21 are white dwarfs (sun-type star remnants). All creatures (stars, brown dwarves, and planets) are located in 339 systems. A total of 69 binary stars, 19 three-star stars, three four-star and one five-star systems.

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Most of the stars are red dwarfs (249). Spectral G-Class stars, like our Sun, are eighteen at a distance of 10 parsecs.

Catalog

You can find the object catalog at the title https://gruze.org/10pc/. It starts, of course, with the Alpha Centauri system, which also includes the Proxima Centauri.

The seemingly artificial signal came from Proxima Centauri. But the doubt is correct

He continues with Barnard Starr. A good example of a “disappearing planet”. In 2018, astronomers announced the discovery of a planet near this star, but recent data question its existence. Here are the brown dwarves Luhman 16.

But orthographic projection is much better, and it is available in a zoom-in and zoom-out version gruze.org/galaxymap/10pc/

Single circles mean 2 parsecs (6.5 light years). The number in square brackets indicates the distance above or below the plane of the galaxy. If there is a green circle around the star, then the planets rotate around it. The number indicates the number of planets.

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