Pseudo-image Z (blue), J (green) and Ks (red) of a region corresponding to the cluster / group of candidate galaxies. The red dashed circle delineates the central region of the six arcmin rays, the green lines indicate the two positions of the long slits, and the red squares show the five galaxies observed with F2. In the right panels, we have zoomed in / out 58 candidate galaxies within the studied region. Each square side is 20 arcs long. attributed to him: arXiv (2022). doi: 10.48550 / arxiv.2210.16332
A team of researchers with members from the Universidad Nacional de San Juan, Universidade Federal do Rio Grande do Sul and Universidad Andres Bello have found evidence of a large extragalactic cluster hidden behind part of the Milky Way. The group has posted a paper describing their findings on a prepress server on arXiv pending publication in the journal. Astronomy and astrophysics.
Astronomers have long known that part of the night sky is mostly hidden from view due to the galaxy’s bulge. Known as the “zone to avoid,” it makes up about 10% of the dark sky and has left researchers wondering what might be behind it. Because it provides researchers with so little to work with, the area has not been well researched; So, little is known about what it might be hiding. In this new effort, the researchers used a variety of tools to gain a better understanding of what might be hidden from view.
In recent years, scientists have used a variety of tools to explore the area to be avoided. In this new effort, researchers have begun to collect all the data collected to date and add more using information recently obtained from the VVV survey.
The VVV Survey is a project sponsored by an intergovernmental research organization called the European Organization for Astronomical Research in the Southern Hemisphere. It includes many state-of-the-art research facilities located in multiple locations. The survey participated in the study of the use of stars infrared emissions instead of visible light. Such emissions can pass through gas, dust, and light from the stars into the bulge and instruments created here on Earth.
in a studio infrared imagesIn this study, the researchers found that they were able to identify many galaxies located outside the Milky Way. Because of their number, the researchers believe that together they make up what they describe as a huge extragalactic structure. They estimate that there may be up to 58 galaxies in the structure.
more information:
Daniela Galdiano et al, unveiled a new structure behind the Milky Way, arXiv (2022). doi: 10.48550 / arxiv.2210.16332
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