Hubble’s Stunning Galaxy with Unusual Glowing Gas Revealed

Key Takeaways

1. NGC 4388 is a spiral galaxy located about 60 million light-years away in the Virgo constellation.
2. A new image of NGC 4388 reveals a plume of bright gas being ejected from the galaxy’s disc.
3. The gas outflow is caused by interactions with the hot intracluster medium as NGC 4388 moves through it.
4. The glow observed may be related to the supermassive black hole at the galaxy’s core, which ionizes nearby gas.
5. The Hubble image is a result of various observing programs aimed at studying galaxies with active black holes.

NGC 4388 is a spiral galaxy situated roughly 60 million light-years away in the Virgo constellation, also known as The Maiden. This galaxy is familiar to Hubble, which had previously captured an image of it in 2016. The latest image, however, offers more detailed data, showcasing a plume of bright gas that is ejecting from the galaxy’s disc.

Reasons Behind the Gas Outflow

Researchers have put forth plausible explanations for the gas outflow. NGC 4388 is a member of the Virgo galaxy cluster, where galaxies are spaced apart by regions filled with hot gas, referred to as the intracluster medium. As NGC 4388 traverses through this medium, it encounters pressure from the surrounding gas. This interaction leads to some of its own gas being stripped away, which is what we observe as the gas outflow emerging from NGC 4388’s disc towards the lower right side of the image.

The Mystery of the Glow

The origin of the glow remains largely uncertain. Nevertheless, scientists propose that it might be linked to the supermassive black hole situated at the galaxy’s core. This black hole spins the gas around it, creating a superheated disc. This disc then ionizes the nearby gas, resulting in the glowing effect. The distant gas likely emits light due to shock waves created in the process.

This image from Hubble was made possible through contributions from various observing programs. These programs are designed to enhance our understanding of galaxies that have active black holes at their centers.

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