Articles tagged with Planetary Nebulae
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Scientists observe violent collisions around young star Fomalhaut, detecting the aftermath of two powerful collisions over a 20-year period. The collided objects are estimated to be at least 60 kilometers across and may have formed planets.
Astronomers discovered a greedy white dwarf star consuming its closest celestial companion at an unprecedented rate. The study found that the super-dense white dwarf is burning brightly due to the mass transfer between the two stars, potentially leading to a massive explosion visible from Earth.
Scientists analyzed particles from asteroid Ryugu, revealing a weak magnetic field that likely pulled matter inward to form the outer planetary bodies. The team estimates that such a low-grade field intensity would have been enough to play a role in giant planet formation, from Jupiter to Neptune.
Astrophysicists from the University of Hong Kong have solved a 20-year-old mystery surrounding the lower-than-expected amounts of sulfur found in planetary nebulae. Using high-quality data, they found that sulfur and oxygen exhibit strong correlations, effectively dispelling previous claims about the anomaly.
Researchers have found a source for the mysterious alignment of planetary nebulae near the Galactic Centre, attributing it to close binary stars. The study confirms the alignment but also reveals that specific groups of planets are responsible.
The Butterfly Nebula's unique shape is caused by a second star orbiting the central star, creating wing-like lobes. New research reveals powerful winds are altering the material within these lobes, contradicting existing models of planetary nebulae formation and evolution.
A team of astronomers used JWST images to piece together the death of a 500-million-year-old star, which created shrouds of gas and left a remnant dense white dwarf. The study reveals evidence of two or three companion stars that hastened its death, with implications for supernovae and gravitational wave systems.
Researchers have found the oldest visible planetary nebula, a rare celestial jewel, hosted by a 500 million-year-old galactic cluster. The team determined that the PN has a 'kinematic age' of 70,000 years and estimates its progenitor star's mass and residual core's mass.
A new study published in AGU journal Geochemistry, Geophysics, Geosystems suggests that Earth formed inside a solar nebula. The research found that vast stores of helium-3 from the Big Bang are leaking out of the Earth's core, providing evidence for this theory.
A team from University of Arizona observes radio emissions from hydrogen cyanide, formyl ion, and carbon monoxide in five planetary nebulae, outlining their shapes for the first time. The findings support the idea that planetary nebulae seed the interstellar medium with molecules that form new stars and planets.
Researchers from RIT and Green Bank Observatory used Hubble Space Telescope images to analyze the Butterfly Nebula (NGC 6302) and Jewel Bug Nebula (NGC 7027), shedding light on nebula formation processes. The study confirmed that the Butterfly Nebula was ejected only about 2,000 years ago, with its S-shaped iron emission possibly even ...
The Stingray nebula has faded precipitously over the past two decades due to a temperature drop in its central star, SAO 244567. Researchers have observed unprecedented changes in the nebula's structure and brightness, with the oxygen emission dropping by nearly 1,000 times between 1996 and 2016.
The Stingray Nebula, a young planetary nebula, has faded significantly over the past 20 years, losing its bright colors and shape. Its rapid dimming is likely connected to the cooling of its parent star, which has reduced ultraviolet ionizing radiation.
Researchers observed stellar winds around cool red giant stars using ALMA Observatory, finding disk-shaped, spiral, and cone-like structures. The team concludes that companions or exoplanets influence the shape of stellar winds and planetary nebulae.
Interactions with binary companions generate complex planetary nebula shapes by influencing the stellar wind of elderly stars. Leen Decin and colleagues observed AGB star winds using ALMA, finding none with spherical symmetry and instead distinct geometries similar to those in PNe.
Researchers have found unprecedented levels of complexity and rapid changes in jets and gas bubbles blasting off from the centers of two young planetary nebulas. Hubble's multi-wavelength observations are helping to converge on an understanding of the mechanisms underlying these chaotic fireworks.
Astronomers using ALMA captured the moment when an old star starts to alter its environment, ejecting high-speed bipolar gas jets. The team's findings help scientists understand how complex shapes of planetary nebulae are formed.
The Gemini Observatory has captured an exquisite image of the planetary nebula CVMP 1, also known as a celestial hourglass. This object is formed when a massive star undergoes a catastrophic explosion, leaving behind a hot core that energizes the ejected gases, causing them to glow and form the striking hourglass shape.
A team of researchers from the University of Arizona has discovered a mechanism creating complex carbon molecules, such as C60, in a simulated planetary nebula environment. The study suggests that these molecules are derived from silicon carbide dust made by dying stars and can be dispersed throughout the interstellar medium.
Researchers have discovered a binary interaction between stars, leading to slower mass loss rates. This changes our understanding of how stars end their lives and the chemical evolution of galaxies.
A team of scientists has discovered a unique planetary nebula with an inverted ionization structure surrounding a central star undergoing a 'born-again' process, which is expected to occur in the Sun's future evolution. This finding provides valuable insights into the late-stage evolution of stars like our Sun.
Astronomers have detected a unique laser emission from the heart of the Ant Nebula, indicating the presence of a double star system. The phenomenon was discovered using European Space Agency's Herschel space observatory and is connected to the death of a star.
A team of international astronomers predicts the sun will turn into a planetary nebula, marking the end of its active life. The new model shows that low-mass stars like the sun can form bright planetary nebulas, solving a long-standing scientific puzzle.
Astronomers have detected superhot blobs of gas being ejected near the dying star V Hydrae, with each blob twice as massive as Mars and traveling at half-million miles per hour. The plasma balls are thought to be launched by an unseen companion star in an elliptical orbit, shedding new light on planetary nebulae.
A team of researchers from the Instituto de Astrofísica de Canarias has discovered a new gaseous component in a planetary nebula, which is helping to understand the chemical evolution of our Galaxy. The component, rich in heavy elements such as oxygen and carbon, was detected using the OSIRIS instrument on the Gran Telescopio CANARIAS.
A new method has been developed by HKU astronomers to estimate more accurate distances between planetary nebulae and the Earth. The technique uses three sets of data, including object size, brightness, and dimming, to create a robust distance scale that can provide distances accurate to 20 percent.
Researchers found that strongly interacting binary stars are necessary for powerful, bipolar jets of gas and dust to form in planetary nebulae. The jets are produced by accretion processes that provide fuel for the outflows.
Astronomers are closer to understanding the formation of planetary nebulas after discovering a star in the southern sky with a strong magnetic field. The 'blooming' star is creating a jet of charged particles that glow with radio waves, and researchers believe the magnetic field may play a key role in shaping its symmetrical jets.
A team of astronomers found that butterfly-shaped planetary nebulae are mysteriously aligned in the sky, with their long axes aligned along the plane of our galaxy. This surprising result hints at a more mysterious factor influencing the formation of these objects, possibly due to strong magnetic fields as the bulge formed.
A team of astronomers, led by Joel Kastner from RIT, has conducted the most comprehensive X-ray survey to date for planetary nebulae using Chandra's exceptional 'X-ray vision'. The study reveals new insights into the violent processes of stellar death and wind collisions in X-rays.
Researchers have captured a rare binary star explosion inside a planetary nebula, offering new insights into stellar evolution. The study predicts that the combined mass of the two stars could lead to a larger supernova explosion.
Researchers are using planetary nebulae as probes to uncover patterns of chemical enrichment in spiral galaxies. By analyzing the chemical elements in these shells of gas, scientists can gain insights into how galaxies were formed and developed.
Researchers at the University of Rochester found that planets or low-mass stars orbiting dying stars create breathtaking objects in the sky. The study explores how these companions shape planetary nebulae through spiral waves and magnetic fields, producing striking shapes like the Dumbbell Nebula.
Two astronomers have used NASA's Chandra X-ray Observatory to discover a shell of superheated gas around a dying star in the Milky Way galaxy. The study reveals how material ejected at two million miles per hour can heat previously ejected gas to emit X-rays, providing new insight into the persistence of such gas around dying stars.
Astronomers have discovered a quadra-polar nebula with two disks formed at different times, challenging the companion-star-only model. The study, led by C. Robert O'Dell, used sharp new images from the Hubble Space Telescope to reconstruct the 3D structure of the Helix Nebula.
Astronomers confirm that the Virgo Cluster of galaxies is a highly non-uniform structure consisting of several subunits. The cluster's formation history can be studied using planetary nebulae stars, which trace the masses within the region. These findings provide new insights into the dynamic evolution of galaxy clusters.
Astronomers using the Chandra X-ray Observatory discovered a complex shape of the Cat's Eye Nebula, which is driven by hot gas. The team also found an unexpected X-ray source at the central star, sparking questions about its formation.
Researchers unveil a new model suggesting magnetic dynamo forces shape planetary nebulae by twisting radiating material into distinctive shapes. The discovery sheds light on the cosmic 'paintbrush' responsible for creating stunning nebulae, with implications extending beyond our solar system.
New Chandra X-ray Observatory images reveal a luminous spike from a giant black hole, a compact nebular resembling a cosmic crossbow, and a hot bubble of gas surrounding a dying star. These observations contradict theoretical predictions, indicating the presence of high-energy particles beyond expectations.
Dr. Karen Kwitter's research focuses on the chemical composition of planetary nebulae, which can reveal information about the life cycle of stars and the evolution of our galaxy. By analyzing light spectra from these clouds, she aims to refine models of galactic chemical evolution.
Astronomers have discovered large numbers of previously unknown stars in the Virgo Cluster using dying green stars as tools. The findings suggest that at least 22% of Virgo's light is coming from these hidden stars, and could affect estimates of universe mass.
A team of astronomers has developed a 3-D globe-like image of the Helix nebula, allowing them to inspect it from all sides. The image reveals evidence that the nebula behaves like a double-headed garden sprinkler, with each side ejecting gas at similar structures.