Categories: Technology

The James Webb Space Telescope made an unexpected discovery

The entire region was observed for the first time using a space telescope. Hubble in 2018, and has properties that indicate it may be a site of reionization, but its components are difficult to recognize. Each star cluster is approximately parsec (about 3.26 light years), indicating that they very densewhich is approximately three orders of magnitude larger than typical young star clusters in the local Universe.

During the reionization of the Universe

The authors conclude that these results mean that star cluster formation and feedback may have shaped the properties of galaxies during the epoch reionization The universe underwent a major change that began about 379,000 years after the Big Bang.

“Reionization is one of the last major phase transitions of the Universe,” Adamo explains. “We think it started around the redshift at which we detected these star clusters, so they are found in the galaxy in the early stages of reionization.”

The discovery of young massive star clusters in the Arc of the Cosmic Jewels provides great insight into how globular clusters form.

“We think that the radiation produced by these star clusters could travel outside the galaxy and promote reionization. But, of course, these are assumptions. We cannot have direct evidence with the current data,” admits the researcher.

In our Milky Way we see ancient globular star clustersheld together by gravity and preserved for billions of years. They are old relics of intense star formation in the early cosmos, but it is not known where or when they formed. The discovery of young, massive star clusters in the Cosmic Gem Arc now provides a beautiful glimpse into this process.

“These results provide direct evidence that protoglobular clusters formed in faint galaxies during the reionization era, furthering our understanding of how these galaxies managed to reionize the universe– says Angela.

These results prove that protoglobular clusters formed in faint galaxies during the reionization era of the Universe.

Angela Adamo (Stockholm University)

Moreover, “the high density of stars found in clusters gives us the first indication of the processes occurring within them,” he emphasizes, “providing new data on possible formation of very massive stars

and from black hole seedsboth are important for the evolution of galaxies.”

Spanish participation

Another of the authors Yolanda Jimenezresearcher from the Institute of Astrophysics of Andalusia (IAA-CSIC) and the National Observatory of Rio de Janeiro (Brazil), summarizes the findings: “These structures are the oldest star clusters ever discovered and may be the predecessors of the globular clusters that we currently have observed in our galaxy.”

“This discovery once again demonstrates how, thanks to James Webb, we are uncovering the earliest stages of the development of our Universe,” says co-author Jose Maria Diegoscientist from the Institute of Physics of Cantabria (IFCA, a joint centre between CSIC and the University of Cantabria), where a model of the gravitational lens effect was developed to understand the magnification of the arc.

“One of the questions that remains to be resolved is why we only see five double images,” he comments, “when in fact we expect six. A possible explanation is the presence dwarf galaxy unnoticed James Webb, with a lower magnification, which does not allow us to see the image in question.”

One question that remains to be answered is why we see only five double images when we actually expect six.

Jose Maria Diego (IFCA, CSIC-UC)

In any case, these results help shed light on how stars and galaxies in the early universeand the researchers hope to have many more examples in the future.

At the moment, “we are monitoring spectroscopic observations Comic Gems arc, which will help obtain more accurate physical properties of their star clusters and host galaxy,” continues Adamo. Additional studies with Webb’s participation are planned in 2025, which could bring new surprises.

Source link

Admin

Recent Posts

Pamela Anderson, Anne Hathaway… 20 Celebrities Who Post Outdoors

After using it to remove dark color filters, the stars think they are absolutely beautiful.…

36 minutes ago

He warns that Ukrainian troops have lost more than 40% of the territory won in the Russian Kursk region

Ukrainian soldiers move in a military vehicle in Sumy, near the border with the Russian…

40 minutes ago

a disease that affects half the population and very few people know

Dyspepsia unknown word meaning a very familiar feeling... but with many nuances.It has happened to…

42 minutes ago

The old Nissan will be resurrected this Saturday with the start of production of the first Ebro cars | Economy

Workers assemble the Ebro S700 during tests carried out in November this year at the…

48 minutes ago

Orange offers ‘sybaritic’ TV with its Infinity HomeBox service, only if you subscribe to football

Orange is once again bringing to market a new decoder for the TV service, which…

49 minutes ago

Mistakes from Kounde and Casado make a comeback possible for Celta against Barca, further encouraging the fight for La Liga.

Big disaster for Barça in Balaidos. Hansi Flick's side came back from a 0-2 deficit…

53 minutes ago