What kind of supernova forming the solar system remains, and where?

hotcoffee (25)in #science • 6 years ago

Hello friend steemians wherever you are, I hope you guys are fine. I write something that makes me imagine about the early formation of the solar system, yes! I am very excited about the past, how it began and covered the things that would interest me. There is an expression "Apples fall not far from the tree", only I do not ask Apple Newton. Return to the formation of the Solar System. That the birth of the Solar System was triggered by a supernova explosion. Where is this supernova star supposed to be the trigger for the formation of our solar system ?

^{Supernova&galaxia.wikipedia}

During this time people assume that the supernova that triggers the formation of stars. Thus, shock waves from supernova explosions allegedly trigger the collapse of matter in molecular clouds which then form the sun and the planets.

To know where the supernova is located we must first know where the Sun was 4.6 billion years ago. But now astronomers are looking at other possibilities because they do not find any traces of supernovae around the Embedded Cluster (EC). Well, the Embedded Cluster or EC is a star cluster of mostly stars shrouded in dust and interstellar gas.

Astronomers find there are clusters of stars that can collapse themselves without known for sure what triggers. It could be a collapse caused by interactions in clusters, collisions between clusters or even spiral arm collisions. The molecular cloud gas then collapses and forms a star cluster. Here they formed a lot of stars and there is a massive mass with several million years old and explode.

For the Sun, we must first traceback approximately where the location of the Sun was born. This is because the existence of the Sun that we know is its current existence. But where he came from in the past is still a mystery. Like a traveler trying to find where his birthplace is.

^{Location of the Solar System within the Milky Way,wikipedia}

What about the Sun? It is now 4.5 billion years old and inside the Milky Way, the Sun moves around the center of the galaxy. If calculated, since the birth of the Sun has been around the galactic center 20 - 30 times. In such a long span of time, anything can happen to the rest of the supernova. Traces of supernovae will be easily swept away due to the interaction between the stars and the interaction of matter between the stars around them.

But astronomers are still searching for the Sun's footsteps when it's born. It's like looking for a trail where a child who has been decades earlier was born. Astronomers retraced the position of the Sun 4.6 billion years ago by assuming static galaxies. From there was known the location of the Sun 4.6 billion years ago. But it's not that easy!

Assuming the static galaxy problem is not yet completed. Another problem is the spiral arms or molecular disorders that scramble the movement of the Sun. As a result astronomers so difficult to know where the position of the Sun at the beginning of its formation.

^wikipedia

If there has been a trace of the Sun 4.5 billion years ago and there is a cluster that, if traced back to its existence in the past, is close to the Sun, then what to do next is to trace the stars of the "Sun's brother" within a 100-parsec radius. This is called the search for the family of the Sun.

Why look for the star of the Sun family?

In general, the star is born in a star cluster although there are also stars that are born alone and not in the cluster. But the birth of this self-born star is very little. Therefore, the main assumption is that the Sun is born in a cluster. The question is now, where are the clusters? Whether the cluster is still there or has been destroyed.

If the Sun were born in a cluster there would probably be other stars also born in the same cluster. It is therefore sought by friends of the Sun who are born at the same time that is characterized by the same chemical composition. Thus the search is focused on stars that have the same chemical composition. The age of the stars is difficult to calculate in detail with Earth that can be calculated in detail.

^{The Pleiades, an open cluster dominated by hot blue stars surrounded by reflection nebulosity.,wikipedia}

Currently, there are several candidates who allegedly are brothers of the Sun because it has a similar chemical composition. But it remains to be seen whether these stars are born at the same time or not.

The next problem, if born in the cluster, then there is the possibility that the cluster of birthplaces was destroyed because the average lifetime of a cluster is only 100 million years. Over 100 million years most of the clusters have been unraveled and some even less than 100 million years have been unraveled making it difficult to look for the cluster.

But even though the cluster is gone, astronomers can still trace the past of stars of similar chemical compositions.

There are allegations that the Sun's nebula that forms the Solar System is not derived from the supernova but is polluted by the stellar wind of AGB stars (Asymptotic Giant Branch - red giant stars) in the cluster. But the strongest possibility is that the supernovas of the exploding young star or the supernova of the young star just muddle the Sun's nebula that has now formed planets.

^{Artist’s impression of a hot Jupiter exoplanet in the star cluster Messier 67,wikipedia}

One of the candidates for the twin sister of the sun is a star in the M67 cluster that has an age not far from the Sun. But astronomers still doubt that the M67 cluster is the birthplace of the sun, because of the orbital simulation, the sun, and the M67 cluster never close together in a distance of fewer than 20 parsecs.

But where is the supernova or the Sun-born cluster still being searched and unknown to its existence because it is not easy to retrace the last traces of the Sun.