Magellan Flow may be 5 times closer to us than previously thought, study indicates

https://br.sputniknews.com/20211124/fluxo-de-magalhaes-pode-estar-5-vezes-mais-perto-de-nos-do-que-se-pensava-indica-estudo-20241855.html

Magellan Flow may be 5 times closer to us than previously thought, study indicates

Magellan Flow may be 5 times closer to us than previously thought, study indicates

Defining spatial distances is an extremely difficult task. This is because the measurement is made when it is possible to accurately determine the intrinsic brightness of the… 24.11.2021, Sputnik Brasil

2021-11-24T01:39-0300

2021-11-24T01:39-0300

2021-11-24T01:39-0300

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The Magellanic flow (a giant structure formed by a flow of gases moving at high speed) that circles and surrounds the Milky Way, may be much closer than estimated, according to the new simulations. This long flow of material originates in the Large and Small Magellanic Clouds, galaxies that orbit each other and are likely to be cannibalized by the Milky Way. The gravitational interactions of these Magellanic Clouds with the Milky Way ripped off a large amount of gases that now arcing across Earth’s sky. Last year, a team of scientists discovered that gigantic clouds of gas and plasma drawn from the Magellanic Flow’s galactic halos surround most of the galaxies. It was this same team of scientists who used astronomical models to model the formation and evolution of the Magellanic flux over 3.5 billion years and discovered that we could be 5 times closer to it than we imagined. This means that the previous estimate, which ranged from 325,000 light years to 650,000 light years away from Earth, has dropped to 65,000 light years, a considerable difference. If the flow is closer than we thought, we will now need to rethink its main properties. According to the model, when the two dwarf galaxies began to orbit each other, they did so in the opposite direction to what astronomers previously thought. Consequently, when they started to steal gases from each other, rather than arcing away from the Milky Way, the Magellanic stream moved towards our galaxy. The results of the research, published in The Astrophysical Journal Letters, demonstrate that the Magellanic flow is expected to collide with the Milky Way much sooner than expected, about 50 million Earth years. The collision will inject new cosmic material into the galaxy, resulting in shocks and gas concentrations capable of generating new stars. “Some people think the stars are too faint to see because they’re too far away. But now we see that the flux is basically on the outside of the Milky Way’s disk,” Lucchini said. Future observations may confirm the finding.

https://br.sputniknews.com/20211103/astronomos-discobrem-novos- Details-sobre-superestrela-de-helio-rarissima-18190183.html

https://br.sputniknews.com/20211123/astronomos-discobrem-em-exoplanetas-distantes-elementos-sem-equivalentes-no-sistema-solar-20228812.html

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space, science, astronomy

Defining spatial distances is an extremely difficult task. This is because the measurement is made when it is possible to accurately determine the intrinsic brightness of the observed object, relating it to time and speed. But, in the cosmos, the intrinsic brightness of objects is not always well defined, which can lead us to error.

The Magellanic flow (a giant structure formed by a flow of gases moving at high speed) that circles and surrounds the Milky Way, may be much closer than was estimated, according to the new simulations.

This long flow of material originates in the Large and Small Magellanic Clouds, galaxies that orbit each other and are likely to be cannibalized by the Milky Way. At gravitational interactions from these Magellanic Clouds with the Milky Way ripped a great amount of gases that now arcing in the Earth’s sky.
Galaxy NGC 3627 near the Milky Way.  Bright reddish flares map hot clouds of hydrogen (Hα), marking the presence of newborn stars, while blue regions (a combination of green, red and infrared filters) reveal the distribution of slightly older stars - Sputnik Brasil, 1920 , 03.11.2021

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Last year, a team of scientists discovered that gigantic clouds of gas and plasma drawn from the Magellanic Flux’s galactic halos surround the most galaxies. It was this same team of scientists who used astronomical models to model the formation and evolution of the Magellanic flux over 3.5 billion years and discovered that we could be 5 times closer to it than we imagined.

“The origin of the Magellanic Flow has been a mystery for the past 50 years,” said University of Wisconsin-Madison physicist Scott Lucchini. “We proposed a new solution with our models. What is surprising is that the models brought the flow much closer to the Milky Way”, says the researcher.

This means that the previous estimate, which ranged from 325,000 light years to 650,000 light years away from Earth, has dropped to 65,000 light years, a considerable difference. If the flow is more close to what we imagined, it will now be necessary to rethink its main properties.

According to the model, when the two dwarf galaxies began to orbit each other, they did so in the opposite direction to what astronomers previously thought. Consequently, when they started to steal gases from each other, instead of arcing away from the Milky Way, the Magellanic stream moved towards to our galaxy.
The results of the research, published in The Astrophysical Journal Letters, demonstrate that the Magellanic flow is expected to collide with the Milky Way much sooner than expected, about 50 million Earth years. The collision will inject new cosmic material into the galaxy, resulting in shocks and gas concentrations capable of generating new stars.
Solar system in space (reference image) - Sputnik Brasil, 1920, 23.11.2021

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“Some people think the stars are too faint to see because they’re too far away. But now we see that the flux is basically on the outside of the Milky Way’s disk,” Lucchini said.

Future observations may confirm the finding.

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