About the scientists who studied stars, who was the father of stellar astronomy

The father of stellar astronomy was Herschel.

Friedrich Wilhelm Herschel is a famous British astronomer, classical composer, and the founder of stellar astronomy, known as the father of stellar astronomy.

In 1773, Herschel built his first astronomical telescope with a 40-fold magnification using a lens he bought, and by 1776 he had built reflecting telescopes with focal lengths of 3 and 6 meters, and began to survey the sky.

On March 13, 1781, Herschel spotted an unusually bright star while observing the starry sky with a homemade 227x astronomical telescope. Later, he changed to 460x and 932x eyepieces and found that the diameter of the star increased as the magnification of the astronomical telescope increased.

Experience told Herschel that it was not a star, because the diameter of the star did not increase with magnification, and he concluded that it was a new planet hidden in the solar system. This new planet is the famous Uranus. His discovery caused a sensation all over the world, because it was an epoch-making event since mankind learned about the solar system.

Character achievements

In 1781 the seventh planets in the solar system - Uranus and Jupiter, Saturn and its moons (Celestial Guardian) were discovered.

3. Ganymede. Fourth, Encete.

I. Enceladus).

In 1782, Herschel compiled the first biplanetary catalog, and he also discovered that most binary stars were not superficial "optical binaries", but real "physical binaries".

In 1783, Herschel discovered the Sun's self and demonstrated that the Sun was moving at a speed of kilometers and seconds in the direction of the constellation Hercules, which was about 10 times different from modern estimates.

Herschel published a catalog of star clusters and nebulae three times, recording 2,500 nebulae and star clusters. He was the first to determine the shape, size, and number of stars of the Milky Way. Pioneering stellar astronomy, he studied and hypothesized that (some) nebulae were made up of stars, and developed the famous theory of stellar evolution.

A total of 1,083 observations were made, with a total of 117,600 stars observed.

Hello dear, the father of stellar astronomy is William Herschel. Friedrich Wilhelm Herschel (15 November 1738 – 25 August 1822) was an English astronomer and classical composer.

The founder of stellar astronomy and is known as the father of stellar astronomy. First President of the Royal Astronomical Society. Member of the French Academy of Sciences.

Discover Uranus and its two moons, Saturn's two moons, the space movement of the Sun, infrared radiation from sunlight with a large reflecting telescope of his own design; compiled the first biplanetary and constellation catalogs, and published the Catalog of Stars and Nebulae; The structure of the Milky Way was also studied.

A team of German astronomers has discovered a strange new type of star covered in large amounts of helium. It is possible that these stars were formed by the merger of a rare star.

The surface of a normal star is made up of hydrogen and helium, while the surface of the star discovered by Werner and his colleagues is covered with carbon and oxygen, which is produced after helium is burned, which is a peculiar component for stars. The situation becomes even more puzzling because the temperature and radius of these new stars suggest that their cores are still burning, a property that is often seen in stars that are more evolved than the ones observed by Werner and his team in this study.

The second article**, published at the same time as Professor Werner and his team's staff, was published by a team of astronomers from the University of La Plata and the Max Planck Institute for Astrophysics, providing possible explanations for their formation.

Dr. Miller Bertolami of the Institute of Astrophysics of La Plata, lead author of the second article, said:"We believe that these stars, discovered by our German colleagues, may have formed during a very rare stellar merger event between two white dwarfs. White dwarfs are the remnants of larger stars that have run out of nuclear fuel, and are usually very small and dense.

It is well known that stellar mergers occur between white dwarfs in close binary star systems due to the reduction of orbits caused by the emission of gravitational waves. Miller-Bertolamy explains:"Normally, white dwarf mergers do not result in the formation of carbon- and oxygen-rich stars"，"But we believe that for binary star systems that form with very special masses, white dwarfs rich in carbon and oxygen may be broken and eventually appear on top of helium-rich white dwarfs, leading to the formation of these stars"。

However, there is currently no stellar evolutionary model that can fully explain the newly discovered stars. The research team needed a well-developed model to assess whether these mergers could actually occur. These models will not only help the team better understand these stars, but also provide a deeper understanding of the later evolution of binary star systems and how their stars exchange masses during their evolution.

Until astronomers develop finer models for the evolution of twin stars, the origins of helium-covered stars will be discussed.

Normally, we expect stars with these surface components to have completed the burning of helium in their core nuggets and are on their way to becoming white dwarfs. These new stars are a serious challenge to our understanding of stellar evolution. "

This star, numbered WHL0137-LS, was born in the first billion years of the universe, with a mass at least 50 times that of the Sun, millions of times brighter than the Sun, and it took 12.9 billion years for light to reach the Earth's shed.

Far from the earth, the formation time of stars is as long as 13 billion years, the brightness is 1 million times that of the sun, and people can see the appearance of the sedan chair about 12.8 billion years ago.

Very close to the earth, it is the ** place of the earth's energy, and it can be seen at night, it is mainly hydrogen-based, and it is a sphere that can emit light.