Latest news with #ChamaeleonI
Yahoo
a day ago
- Science
- Yahoo
Ominous 'Chamaeleon' is hiding a stellar secret: Space photo of the week
When you buy through links on our articles, Future and its syndication partners may earn a commission. QUICK FACTS What it is: The Chamaeleon I star-forming cloud Where it is: 522 light-years away, in the constellations Chamaeleon, Apus, Musca, Carina and Octans When it was shared: June 10, 2025 Stars form within dark molecular clouds of gas and dust called nebulae, but it's rare to capture these stellar nurseries clearly. A dramatic new image from the Dark Energy Camera (DECam) in Chile unveils the Chamaeleon I dark cloud — the closest such place to the solar system — in unprecedented detail. The dark patches exposed in the new image give Chamaeleon I an ominous look, but within the thick veils of interstellar dust are pockets of light created by newly formed stars. Chamaeleon I is approximately 2 billion years old and is home to around 200 to 300 stars. Those young stars, now emerging from swirling gaseous plumes, are lighting up three nebulae — Cederblad 110 (at the top of the image), the C-shaped Cederblad 111 (center) and the orange Chamaeleon Infrared Nebula (bottom). In astronomy, the word "nebula" is used to describe a diverse range of objects. It was initially used to describe anything fuzzy in the sky that wasn't a star or a planet, and it also refers to planetary nebulae, shells of gas ejected from dying stars. Related: 28 gorgeous nebula photos that capture the beauty of the universe However, these three are reflection nebulae, which glow brightly only because they're illuminated by starlight. That's in contrast to the famous Orion Nebula, which emits its own light because the intense radiation of stars within or near the nebula energizes its gas, according to NASA. MORE SPACE PHOTOS —James Webb telescope takes best look at 'Sombrero Galaxy' in 244 years —Pink 'raindrops' on the sun captured in greatest detail ever —Violent galaxies seen 'jousting' near the dawn of time Chamaeleon I is just one part of the expansive Chamaeleon Cloud Complex — imaged in 2022 by the Hubble Space Telescope — which includes the smaller Chamaeleon II and III clouds. Chamaeleon I has been imaged many times before, most recently by the James Webb Space Telescope in 2023. What makes this new image stand out is its spectacular detail. Mounted on the National Science Foundation's Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory in Chile, DECam's 570-megapixel sensor reveals an intriguing faint red path of nebulosity between Cederblad 110 and Cederblad 111. Formed when streams of gas ejected by young stars collided with slower-moving clouds of gas, they're known as Herbig-Haro objects and are embedded throughout Chamaeleon I. For more sublime space images, check out our Space Photo of the Week archives.
Yahoo
7 days ago
- Science
- Yahoo
Star-forming cloud Chamaeleon I looks like a cosmic masterpiece in new Dark Energy Camera image (video)
When you buy through links on our articles, Future and its syndication partners may earn a commission. The universe is full of cosmic masterpieces, none more so than this stunningly evocative vista of the Chamaeleon I dark cloud. Chamaeleon I is part of the closest star-forming complex to us, the Chamaeleon Complex, and is depicted here with inky black dabs of interstellar dust mixed with the brushstrokes of bright reflection nebulae illuminated by young stars. Located about 500 light years away, the Chamaeleon Complex is a giant molecular gas cloud, within which stars form when pockets of cool molecular gas, mostly hydrogen, undergo gravitational contraction and condense, thus birthing a star. These molecular clouds are often very dusty, so much so that patches of them become impenetrable to visible light, as we can see in this image of Chamaeleon I, taken by the 570-megapixel Dark Energy Camera (DECam) on the Victor M. Blanco Telescope at the Cerro-Tololo Inter-American Observatory in Chile. The brighter regions in the image are reflection nebulae: pockets of dust close to the forming stars, off which the light of those young stars is reflected and scattered. Chamaeleon I is home to three reflection nebulae, in particular Cederblad 111, which is the bright area located in the centre of the image. Above it is the smaller Cederblad 110, notable for its distinct C-shape. Above Cederblad 110 is the Chamaeleon Infrared Nebula, which is a window into the star-forming region opened by streams of matter emitted from the poles of a young, low-mass star within. In this image, the Chamaeleon Infrared Nebula appears orange-tinted. These outflows are typical of young stars found within star-forming regions such as Chamaeleon I. After a molecular cloud has fragmented and collapsed to form a young star, that star can then grow further by its gravity pulling in streams of gas from the cloud that surrounds it. Sometimes, though, the young star is fed a little too well, and it can't encompass all the mass that falls onto it. Some excess material is therefore spat away, channelled by the star's nascent magnetic field into beams of matter that spurt from the young star's magnetic poles. It's one of these beams that has dug a tunnel through the molecular gas to form the Chamaeleon Infrared Nebula. Other jets from other young stars can also be seen plowing into the gas of Chamaeleon I, causing that gas to glow as what astronomers refer to as Herbig–Haro objects. Examples can be seen as small red patches all across this view of Chamaeleon I. The most recent census of Chamaeleon I, by Penn State University astronomer Kevin Luhman in 2017, found about 50 new stars and brown dwarfs, bringing the total population of Chamaeleon I up to 226 members. These stars are split into two clusters, north and south, within Chamaeleon I, and based on the ages of their stars, these clusters began active star formation 5 to 6 million and 3 to 4 million years ago, respectively. That star formation continues today, but at a declining rate. Those stars are mostly small, low-mass red dwarf stars. Luhman's studies concluded that the Chamaeleon's initial mass function, which describes the initial masses at which stars form when they condense out of a molecular cloud, is only 0.1 to 0.15 solar masses. Such low-mass stars are at the bottom end of the red dwarf mass scale, yet such stars are the most common stars in the universe, so it is no surprise to see them so dominant in Chamaeleon I. It takes a far more intense star-forming region to produce higher-mass stars. It's possible to understand Chamaeleon I's properties a little better by understanding its location. Our Sun and solar system are currently passing through a region of space called the Local Bubble. This is an area of space where gas in the interstellar medium is relatively sparse, with an overall low density. This region was evacuated within the past 20 million years by numerous supernovae explosions, the shockwaves of which blew away much of the molecular gas in their vicinity, creating a bubble in the interstellar medium with a lower density than its surroundings. Related Stories: — Hubble Telescope spies star-forming cocoons in neighboring galaxy (photo) — Hubble Telescope spies newborn stars in famous Orion Nebula (photo) — Astronomers spot unusually synchronized star formation in ancient galaxy for 1st time The Chamaeleon Complex sits on the surface of this bubble, where the supernova shockwaves have buffeted its denser gas and prompted it to eventually begin forming stars. There's also the Chamaeleon II and III dark clouds, but these currently show little active star birth and no active star formation, respectively. They therefore remain dark and inert. It seems all the artistry is to be found in Chamaeleon I.
