These sausage-like orbits, after which the galaxy was named, are called radial orbits. "We planned the velocity of stars, and the size of the sausage just jumped over us. These "sausage stars" are what's left of the last major merger of the Milky Way", he said. However, the Sausage galaxy was very heavy.
"The collision ripped the dwarf to shreds", said Vasily Belokurov, a contributor to the discovery, who is the lead author on the Sausage discovery papers and a researcher at the University of Cambridge in the United Kingdom and the Center for Computational Astrophysics at the Flatiron Institute in New York City. However, because the Sausage galaxy is so large, it caused more damage than usual, they added.
The sausage-shaped path that these stars orbit in is what tipped the researchers off about this collision, because this path is near the center of our galaxy.
The "Sausage galaxy" implicated in the impact with the early Milky Way possessed a mass of over ten billion times the volume of the Sun. "This is a telling point that the Dwarf galaxy actually came in the eccentric orbit and its fate was sealed". When the Sausage crashed into the young Milky Way, its piercing trajectory caused mayhem.
First, the Milky Way's disk was likely puffed up or even potentially "completely destroyed", forcing it to regrow, according to Belokurov.
And Sausage debris was scattered all around the inner parts of the Milky Way, creating the bulge at the Galaxy's center and the surrounding 'stellar halo'.
Numerical simulations of the galactic mashup can reproduce these features, said Denis Erkal of the University of Surrey in the UK. Computer simulation of the collision showed how stars "Sausages" are in elongated orbits around the center of the milky Way and gradually absorbed the sun's disk. Trajectories have advanced beyond the rising Milky Way disc, which becomes dry after the collision and becomes thicker.
"Evidence of this galactic remodeling is seen in the paths of stars inherited from the dwarf galaxy". About it Vasily Belokurov of Cambridge and his colleagues write in a paper in the journal Monthly Notices of the Royal Astronomical Society. As the sun lies in the center of this enormous cloud of stars, the distribution does not include the slowed-down stars now making a U-turn back toward the galaxy's center. These are the reasons for dramatically reducing the density in the stellar halo of the U-turn galaxy where the stars slide in directions. This study pleased Deason who predicted Orbital Pileup 5 years back.
The new research also recognized at least eight large, spherical wings of stars called the Galobular constellation, which was carried into the Milky Way by the sausage galaxy.
Though we want to conclude this by saying - The Sausage Galaxy has got a huge collection of clusters to host overall.
"While there have been many dwarf satellites falling onto the Milky Way over its life, this was the largest of them all", said Sergey Koposov of Carnegie Mellon University in the USA, who has studied the kinematics of the Sausage stars and globular clusters in detail.