Hypervelocity stars have been seen before, but NASA scientists have just identified a potential exoplanet's system with record loss. They found a hypervegegenstar that has a super-neptune exoplanet in orbit. This discovery could redesign our understanding of the planetary and orbital mechanics. The current models of star development emphasize more about these fascinating stars at high speed. However it has formed, it is astonishing that it somehow managed to hold onto his planet by the process!
High -speed stars travel with extraordinarily high speeds through space, often over hundreds of kilometers per second. These rapidly moving stars are usually excluded from their galaxies due to gravitational forces, possibly from tight encounters with super massive black holes or other stars. Some of them move so quickly that they can free themselves from the gravity of the Milky Way. It is important to examine them because they offer decisive insights into the dynamics of our galaxy, interactions with black holes and even the distribution of dark matter across the cosmos.
The positions and reconstructed orbits of 20 high -speed stars, which were portrayed on an artistic point of view of our galaxy, the Milky Way. Credit: ESA (artist impression and composition); Marchetti et al. 2018 (star positions and trajectories); NASA / ESA / Hubble (background galaxies)
Details of the discovery were published in a paper that was written by the leading astronomer Sean Terry in the astronomical journal. It tells of the discovery of what the team is for a super-neptune world that is around a star with a small mass. The system drives with an estimated 540 kilometers per second! If it were aligned with our own solar system and the star was where our sun was, the planet would sit somewhere between the Venus and Earth orbit. Terry, researcher at the University of Maryland and said: “It will be the first planet to ever creep up a hypervelocity star.”
Finding objects like this in the room is difficult. This property was first observed in 2011 after analyzing data from the micro observations in astrophysics survey carried out by the University of Canterbury in New Zealand. The study was looking for evidence of exoplanets around remote stars.
The starry sky in this NASA/ESA-Hubble world space telescopic photo is located in the direction of the galactic center. The light of stars is monitored to determine whether a change in its apparent brightness is caused by a foreground object that drives them in front of them. The distortion of the space by the intruder would currently illuminate the appearance of a background star, an effect that is called gravitational lenses. Such an event is shown in the four close -ups below. The arrow refers to a star that was currently being held by Hubble in August 2011 by Hubble, which was caused by a black foreground that drifted in front of the star along our line of sight. The star brightened and then faded back to its normal brightness when the black hole came by. Since a black hole does not go out or reflects light, it cannot be observed directly. However, its unique thumbprint at the room of the room can be measured by these so -called microline events. Although an estimated 100 million isolated black holes roam our galaxy, it is a needle-in-a-Haystack search for Hubble astronomers.
The presence of a mass between the earth and a distant object creates these microline events. If such a mass passes between us and a star, your presence can be revealed by analyzing its light curve. In the data in 2011, the signals showed a few celestial bodies and enabled the researchers to calculate that one was about 2,300 times heavier than the other.
The 2011 study indicated that the star was about 20 percent as massive as the sun and a planet 29 times heavier than the earth. Either that or it was a closer planet, about four times the mass of Jupiter, maybe even with a moon. To learn more about the object that the team was looking for by data from Keck Observatory and the Gaia satellite. They found the star, which is still about 24,000 light years away in the Milky Way. By comparing the location of the star in 2011 and then ten years later in 2021, the team was able to calculate its speed.
After the team calculated the speed of the star at around 540,000 kilometers per second, the team is interested in securing further observations in the coming years. If it is about 600,000 kilometers per second per second, the severity of the Milky Way will probably escape and will enter the intergalactic space in the future.
Source: NASA scientists see the candidate for the fastest exoplanet system
Like this:
Load…
Comments are closed.