NGC 3137 Lights Up with Fresh Stars in Hubble’s Latest View

NGC 3137 is a spiral galaxy located 53 million light-years away in the constellation Antlia, and the Hubble Space Telescope has captured it in exquisite clarity. It captured images of this galaxy at six different wavelengths, enabling astronomers to combine ultraviolet, visible, and hydrogen emission data into a single complete picture. At first impression, the image is beautiful, with the galaxy dominating the frame at a sharp angle and its loose arms fanning out like feathers in a summer wind. The older stars in the galaxy’s center have a warm golden tone, whilst the hotter, younger groups of stars on the periphery appear pale blue.

You can see thin dust lanes flowing through the galaxy’s disk, as well as these gorgeous pink spots showing where new stars are being formed as we speak. There are thick clusters of dazzling blue stars that have formed amid the pink clouds of incandescent gas, and each cluster represents a new generation of stars that are just beginning to light. Hubble targeted these features as part of a wider study to examine fifty-five neighboring galaxies. The data is being used to determine how star clusters age from when they first begin to shine brightly until they finally become the older populations that make up the majority of a galaxy. The results provide a vivid picture of life in a spiral galaxy similar to our own Milky Way.

So, what exactly is NGC 3137? It belongs to a small group of galaxies known as the NGC 3175 group, which is named after the Local Group, of which we are a member. It comprises of two large spiral galaxies, NGC 3137 and its neighbor NGC 3175, as well as hundreds of smaller, microscopic galaxies that are still being tallied. Astronomers are interested in this group because the layout and movement of the galaxies are quite similar to what we see in the Local Group. Every new discovery about how galaxies behave and interact allows us to gain a better understanding of how our own cosmic backyard operates.

NGC 3137 has a supermassive black hole that is estimated to be sixty million times the mass of our own Sun. There are small dust clouds ringing the core location, adding a lot of dimension to the scene. Because NGC 3137 is inclined slightly towards us rather than directly facing us, we obtain a side-on perspective of the galaxy, which highlights the 3D structure of the arms. There are a few background galaxies in the scene, but they’re just small orange dots, and then there are a few foreground stars that have drifted into the shot; they’re like photobombs, coming out of nowhere and taking the spotlight.