A new image from the Hubble Space Telescope released this week shows a specific area of star formation. A kindergarten where stars are made from gas that swirls in the area. The object named J025157.5 + 600606 is a bubble of hot gas that contains areas of dark dust and gas known as free-floating vaporizing gaseous globules, or frEGGs.
The gas bubble has beautiful colors and a loose shape that encloses the stars that are born when the gas clumps together. Over time, these clumps grow and increase their gravitational pull, bringing in more gas that forms the base of a new star.
This image, captured by NASA / ESA's Hubble Space Telescope, shows a special class of star-forming nurseries known as free-floating gaseous globules, or frEGGs for short. This item is formally known as J025157.5 + 600606. SA / Hubble & NASA, R. Sahai
It is the formation of these stars that ionize the gas around them and lead to the properties of the bubble, as the Hubble scientists explain: “When a massive new star begins to shine while it is still in the cool molecular cloud, it turns off which it has formed, its energetic radiation can ionize the hydrogen of the cloud and create a large, hot bubble of ionized gas. Amazingly, in this hot gas bubble around a nearby massive star are the FrEGGs: dark, compact dust and gas spheres, some of which produce stars with low mass. The boundary between the cool, dusty frEGG and the hot gas bubble is seen as glowing purple / blue borders in this mesmerizing image. "
The pillars of creation in the Eagle Nebula NASA, ESA and the Hubble Heritage Team (STScI / AURA)
The frEGGs are assigned to objects called Evaporating Gaseous Globules or EGGs, which Hubble first discovered in 1995 in the famous picture Pillars of Creation. These regions are believed to represent an early stage in the formation of protostars, but not every EGG turns into a star. A study of the Eagle Nebula, which is depicted in the Pillar of Creation, found that only about 15% of EGGs showed signs of star formation.
Of the protostars that form, some gain enough mass to convert hydrogen into helium and become full-fledged stars. Others fail to reach this threshold and instead become brown dwarfs, also known as failed stars.