Researchers can now see the influence of young stars on galaxy formation.
In the MIRI observations of NGC 1365, clumps of dust and gas in the interstellar medium have absorbed the light from forming stars and emitted it back out in the infrared, lighting up an intricate network of cavernous bubbles and filamentary shells created by young stars releasing energy into the galaxy's spiral arms. At the center of NGC 7496, a barred spiral galaxy, is an active galactic nucleus .
PHANGS researchers are thrilled with the new images, which reveal previously unseen details, such as"glowing cavities of dust and huge cavernous bubbles of gas" within the galaxy's arms. "Areas which are completely dark in Hubble imaging light up in exquisite detail in these new infrared images, allowing us to study how the dust in the interstellar medium has absorbed the light from forming stars and emitted it back out in the infrared, illuminating an intricate network of gas and dust," said PHANGS team member Karin Sandstrom of the University of California, San Diego.
The researchers will continue to study star formation and inventory these newly revealed structures in the interstellar medium across the 19 galaxies they're studying.
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