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MIRI: The Mid-Infrared Instrument of JWST

MIRI reveals hidden galaxies and the history of the universe.

Göran Östlin, Pablo G. Pérez-González, Jens Melinder, Steven Gillman, Edoardo Iani, Luca Costantin, Leindert A. Boogaard, Pierluigi Rinaldi, Luis Colina, Hans Ulrik Nørgaard-Nielsen, Daniel Dicken, Thomas R. Greve, Gillian Wright, Almudena Alonso-Herrero, Javier Alvarez-Marquez, Marianna Annunziatella, Arjan Bik, Sarah E. I. Bosman, Karina I. Caputi, Alejandro Crespo Gomez, Andreas Eckart, Macarena Garcia-Marin, Jens Hjorth, Olivier Ilbert, Iris Jermann, Sarah Kendrew, Alvaro Labiano, Danial Langeroodi, Olivier Le Fevre, Mattia Libralato, Romain A. Meyer, Thibaud Moutard, Florian Peissker, John P. Pye, Tuomo V. Tikkanen, Martin Topinka, Fabian Walter, Martin Ward, Paul van der Werf, Ewine F. van Dishoeck, Manuel Güdel Thomas Henning, Pierre-Olivier Lagage, Tom P. Ray, Bart Vandenbussche

― 6 min read


MIRI: A New Look at MIRI: A New Look at Galaxies the universe's hidden galaxies. MIRI transforms our understanding of
Table of Contents

The Mid-Infrared Instrument (MIRI) is like the superhero of space telescopes. Launched as part of the James Webb Space Telescope (JWST), MIRI helps us look at the universe in ways we’ve never done before. Imagine peeking into the dark corners of the cosmos where Galaxies hide; that’s what MIRI does!

The Hubble Ultra Deep Field: A Hidden Treasure

In the vastness of space, there are areas that have been studied more than others. One such spot is the Hubble Ultra Deep Field (HUDF), a tiny patch of sky that holds a treasure trove of galaxies. Think of it as the universe's version of a gold mine, but instead of gold, it’s filled with galaxies waiting to be discovered.

Gathering Deep Images: A Long Wait

When MIRI set out to observe this patch, it took a long time—over 41 hours! That’s like waiting for your pizza to be delivered, only to discover it’s a five-star gourmet meal. The images taken with MIRI allow scientists to see galaxies at a distance that we couldn’t see before.

The Great Galaxy Search

Using MIRI, scientists confirmed the existence of over 2,500 galaxies in the HUDF! Most of these galaxies are like mysterious guests at a party—far away and quite shy. But don’t worry; researchers are here to introduce themselves and find out what these galaxies are all about.

A Peek at the Past

When looking at distant galaxies, we’re not just seeing them as they are now; we’re actually looking back in time! The light from these galaxies takes millions or even billions of years to reach us. So, every picture taken by MIRI isn’t just a snapshot; it’s a glimpse into the history of the universe.

The Magic of Infrared

MIRI works in the mid-infrared range, which is essential for seeing through dust clouds that can hide galaxies. It’s like using night-vision goggles in a dark room—suddenly, you can see all the cool stuff others can’t! With this ability, MIRI is revealing galaxies that were previously overlooked because they were too dim or hidden.

Creating a Galaxy Group Photo

MIRI’s job isn’t just to identify these galaxies; it also helps categorize them. It’s like sorting through a box of family photos and putting together an album. Researchers are learning about different types of galaxies, their shapes, and how they have evolved over time.

The Competition with Other Instruments

To make sure MIRI is doing a great job, scientists are comparing its results with other instruments, like Spitzer, which has been around for a while. Think of Spitzer as the older sibling who set the stage for MIRI to shine even brighter. By comparing results, researchers can refine their methods and better understand what they’re seeing.

Counting Galaxies: Who’s Who in the Cosmic Zoo?

When cataloging these galaxies, counting becomes important. Picture a cosmic zoo where each galaxy is like a different animal. Scientists need to keep track of how many are there and what kinds they are. With MIRI, they can better understand how many galaxies are present in the HUDF and their individual characteristics.

The Quest for Redshifts

Among the many mysteries of the universe is the concept of redshift. It’s like the universe’s way of playing hide-and-seek. When galaxies are moving away from us, their light shifts to the red end of the spectrum. Scientists measure this shift to determine how fast these galaxies are receding and how far away they are.

The Cosmic Evolution Show

Understanding how galaxies evolve over time is a significant part of this research. Imagine watching a time-lapse video of flowers blooming; that’s how scientists view the growth and change of galaxies throughout cosmic history. MIRI contributes to this understanding by offering clearer images of galaxies at various distances.

Discovering New Friends

MIRI doesn’t just identify existing galaxies; it also uncovers those that are “extremely red.” These galaxies are like the wallflowers at a party—seemingly shy but potentially fascinating. They might have older stars or be very dusty, suggesting unique characteristics that scientists are eager to learn about.

The Cosmic Microwave Background: A Background Story

Ever heard about the cosmic microwave background radiation? It’s like the afterglow of the Big Bang, and it helps scientists understand the early universe. The information gleaned from MIRI’s observations helps put together a more complete picture of how galaxies formed and evolved after the Big Bang.

Community Engagement: Sharing the Findings

The findings from MIRI’s observations are not kept secret. Just like sharing your best pizza recipe with friends, researchers are making their data available to everyone. This helps foster collaboration across the scientific community, allowing for new discoveries and insights.

The Team Behind The Telescope

Behind every great telescope, there’s a dedicated team. The engineers, scientists, and researchers work tirelessly to ensure MIRI captures stunning images of the universe. Their efforts and passion reflect the excitement of exploring the cosmos together.

What’s Next?

As observations continue, MIRI will keep revealing more secrets of the universe. With every turn of its telescope, we might discover galaxies strutting their stuff like models on a runway. Who knows what else is out there waiting to be discovered?

A Cosmic Adventure

So, buckle up and get ready for a cosmic adventure! Thanks to MIRI and the team behind it, we’re entering a new age of discovery where galaxies become the stars of our story. With each image and each discovery, we’re peeling back the layers of time and space to understand our universe better.

Final Thoughts

The universe is vast, and there’s still so much to learn. The MIRI Deep Imaging Survey is just the beginning of a beautiful journey through space and time. With continued observations, we’re bound to find out more about our universe and possibly answer some of those big questions we’ve been asking for ages.

Remember, every time you look up at the night sky, you’re gazing at a universe filled with mysteries waiting to be solved—thanks to tools like MIRI, the adventure in space exploration has just begun!

Original Source

Title: MIRI Deep Imaging Survey (MIDIS) of the Hubble Ultra Deep Field

Abstract: The recently launched James Webb Space Telescope (JWST) is opening new observing windows on the distant universe. Among JWST's instruments, the Mid Infrared Instrument (MIRI) offers the unique capability of imaging observations at wavelengths $\lambda > 5\mu$m. This enables unique access to the rest frame near infra-red (NIR, $\lambda \ge 1$\mum) emission from galaxies at redshifts $z>4$ and the visual ($\lambda \gtrsim 5000$\AA) rest frame for $z>9$. We here report on the guaranteed time observations (GTO) from the MIRI European Consortium, of the Hubble Ultra Deep Field (HUDF), forming the MIRI Deep Imaging Survey (MIDIS), consisting of an on source integration time of $\sim41$ hours in the MIRI/F560W (5.6 $\mu$m) filter. To our knowledge, this constitutes the longest single filter exposure obtained with JWST of an extragalactic field as yet.

Authors: Göran Östlin, Pablo G. Pérez-González, Jens Melinder, Steven Gillman, Edoardo Iani, Luca Costantin, Leindert A. Boogaard, Pierluigi Rinaldi, Luis Colina, Hans Ulrik Nørgaard-Nielsen, Daniel Dicken, Thomas R. Greve, Gillian Wright, Almudena Alonso-Herrero, Javier Alvarez-Marquez, Marianna Annunziatella, Arjan Bik, Sarah E. I. Bosman, Karina I. Caputi, Alejandro Crespo Gomez, Andreas Eckart, Macarena Garcia-Marin, Jens Hjorth, Olivier Ilbert, Iris Jermann, Sarah Kendrew, Alvaro Labiano, Danial Langeroodi, Olivier Le Fevre, Mattia Libralato, Romain A. Meyer, Thibaud Moutard, Florian Peissker, John P. Pye, Tuomo V. Tikkanen, Martin Topinka, Fabian Walter, Martin Ward, Paul van der Werf, Ewine F. van Dishoeck, Manuel Güdel Thomas Henning, Pierre-Olivier Lagage, Tom P. Ray, Bart Vandenbussche

Last Update: 2024-11-29 00:00:00

Language: English

Source URL: https://arxiv.org/abs/2411.19686

Source PDF: https://arxiv.org/pdf/2411.19686

Licence: https://creativecommons.org/licenses/by/4.0/

Changes: This summary was created with assistance from AI and may have inaccuracies. For accurate information, please refer to the original source documents linked here.

Thank you to arxiv for use of its open access interoperability.

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