Articles tagged with Stars
The Transiting Exoplanet Survey Satellite (TESS) has discovered three new exoplanets, including one rocky planet in the habitable zone, which could potentially support liquid water and life. The newly found planets, TOI-270, are unique in that they occupy a 'missing link' between rocky Earth-like planets and gas-dominant mini-Neptunes.
Researchers detected gravitational redshift in star orbiting Sagittarius A* black hole, consistent with general relativity. The findings provide a 'transformational change' in understanding supermassive blackholes and their physics.
Astronomers have discovered that high-density gas, the material for stars, accounts for only 3% of the total mass of gas distributed in the Milky Way. This finding implies a small number of opportunities to form stars and will be investigated further using Fugin data.
A study led by the Instituto de Astrofísica de Canarias reveals the early days of the Milky Way's formation, identifying two distinct stellar components that merged to create our galaxy. The research uses accurate stellar ages and Gaia space telescope data to uncover the birth of the Milky Way with unprecedented detail.
Astronomers have made a new measurement of the Hubble constant using red giant stars, indicating an expansion rate of around 70 km/sec/Mpc. This measurement falls in the center of a hotly debated question and may lead to a new interpretation of the universe's fundamental properties.
A new method using red giant stars has measured the universe's expansion rate at 69.8 kilometers per second per megaparsec, settling between previous values of 74.0 km/s/Mpc and 67.4 km/s/Mpc. The result may indicate that the standard model of the universe is not yet complete.
A supermassive black hole at the centre of jellyfish galaxy JO201 is stripping away gas and throwing it out into space, accelerating the suppression of star formation. This process, known as ram-pressure stripping, has caused a brief increase in star formation due to the compression of clouds of gas.
A team of researchers has found a balance between hot gas, stars, and other materials in galaxy clusters. The study validates the prevailing cold dark matter theory and provides insight into the relationship between ordinary matter and dark matter.
A mechanism for bicyclic silicon tricarbide formation has been identified in the circumstellar envelopes of carbon stars. Electronically excited silicon atoms react with allene and methylacetylene to form SiC3H2, which is then converted into c-SiC3 via stellar wind and UV light
A new study using the Keck Cosmic Web Imager has provided the clearest evidence yet that filaments of cool gas spiral into young galaxies, explaining how they can make stars on fast timescales. The observations suggest a cold-flow model of galaxy formation, where cool gas flows directly into forming galaxies and is converted into stars.
Researchers from the University of Leeds have developed 3D holograms to share their work on massive star cluster formation with the general public. The holograms allow people to watch millions of years of stellar evolution in 3D, making it easier for non-experts to understand complex topics.
Astronomers have discovered a large amount of warm gas ejected in the Great Eruption of Eta Carinae, revealing an astonishingly different ultraviolet-light image. The newly revealed gas is important for understanding how the eruption began and could be used to study other stars and gaseous nebulas.
Scientists confirm electrically-charged molecules shaped like soccer balls in space, shedding light on the mysterious contents of interstellar medium. The discovery points toward a strong likelihood for other complex carbon-bearing molecules arising spontaneously in space.
IC 10 is the closest-known starburst galaxy, with ample supplies of cool hydrogen gas fueling its furious star formation. The faint object, located 2.2 million light-years from Earth, remains difficult to study due to cosmic dust and stars blocking our view.
Astrophysicist Allison Kirkpatrick announces the discovery of cold quasars, galaxies with abundant cold gas that can still form new stars despite having a quasar at the center. This breakthrough finding overturns assumptions about galaxy maturation and may represent a previously unknown phase in every galaxy's lifecycle.
A new method allows researchers to map magnetic field orientations in space using ground-based telescopes, revolutionizing studies of star formation and cosmic rays. The 'Wisconsin technique' generates high-resolution maps comparable to those obtained with the Planck mission.
The Hubble Space Telescope's Wide Field Camera 3 has captured a breathtaking image of NGC 7773, a mature barred spiral galaxy. The galaxy features a luminous bar-shaped structure, thought to be a sign of galactic maturity and stellar nursery.
Researchers used chemical composition of stars to determine Gaia Sausage's age, estimating it formed around 12.5 billion years ago. The study suggests a collision with the Milky Way disrupted star formation in our galaxy.
New observations of the NGC 300 spiral galaxy reveal that molecular clouds are short-lived structures undergoing rapid lifecycles driven by intense stellar radiation. The positions of young stars rarely coincide with those of their parent molecular clouds, indicating rapid star formation and gas dispersion.
Researchers discovered aluminum oxide around a young massive protostar using ALMA data, providing insights into the early formation of meteorites and planets. The detection suggests that aluminum-rich dust can form in hot regions close to the star and later condense into solid particles.
New observations using NASA's Spitzer Space Telescope reveal that some of the earliest galaxies in the Universe were significantly brighter than anticipated. The excess light suggests that these galaxies released high amounts of ionising radiation, which may have played a key role in the Epoch of Reionisation.
Astronomers have discovered rapidly swinging jets from a black hole in V404 Cygni, behaving in a way never seen before. The jets are thought to be caused by the misalignment of the accretion disk and the black hole, resulting in a wobble-like motion.
The TESS mission has discovered its first Earth-sized exoplanet, HD 21749c, which orbits a nearby star in just 7.8 days. The planet is likely a rocky, uninhabitable world with surface temperatures of up to 800 degrees Fahrenheit.
The Hubble Space Telescope has revealed a stunning image of Messier 3, a massive globular cluster containing over half a million stars. The cluster features 274 variable stars, including the rare RR Lyrae type, which can be used as standard candles to measure vast celestial distances.
Using simulations, researchers found that photons in long gamma-ray bursts originate from the photosphere of relativistic jets emitted by exploding stars. This discovery provides a promising explanation for the emission mechanism and could help unlock insights into dark matter and dark energy.
Astronomers have uncovered one of the oldest star clusters in the Milky Way Galaxy using high-resolution adaptive optics imaging from the Gemini Observatory. The study reveals that the cluster is approximately 12.8 billion years old and provides new insights into galaxy formation.
Researchers used Keck Cosmic Web Imager to study DGSAT I, a solitary ultra-diffuse galaxy with unusual chemical composition. Its low iron content and normal magnesium levels contradict current theories on UDG formation, sparking new questions about galaxy origins.
Astronomers using ALMA have found evidence of independent origins for two gas flows from a baby star. The slow outflow and high-speed jet have misaligned axes, indicating they were launched from different parts of the disk around the protostar.
The NIST Astrocomb allows the detection of Earth-mass planets orbiting M dwarf stars, which comprise 70% of stars in the galaxy. The precision provided by the comb enables astronomers to find habitable planets around the most ubiquitous stars near Earth.
Researchers have spotted a massive young stellar object with a jet emitted by a fledgling star, shedding light on the early lives of stars. The observations were made possible by ESO's MUSE instrument, which has been improved by the addition of Adaptive Optics Facility.
Astronomers using ALMA have detected complex organic molecules around the young star V883 Ori, similar to those found in comets in our Solar System. The distribution of these molecules has a ring-like structure with a radius of 60 au, which is twice the size of Neptune's orbit.
Astronomers have created the first accurate 3D map of the Milky Way, revealing it is warped and twisted, with young stars in the outer regions.
The MaNGA survey reveals the internal structure and composition of nearly 5,000 nearby galaxies, using resolved spectroscopy to dissect their composition and study star motions. The data release includes a massive 'stellar library' with spectra of over 3,000 stars in the Milky Way galaxy.
Scientists have discovered a 1.3 km radius body beyond Neptune's orbit, revealing more about the planet formation process. The detection supports models where planetesimals grow slowly into kilometer-sized objects before merging to form planets.
Dr Clare Dobbs' research will focus on the formation and evolution of young massive star clusters, a crucial aspect of understanding galaxy formation. The five-year project aims to tackle the puzzle of how stars develop in densely packed regions of space.
The protection of extraterrestrial life is not stipulated in international space research agreements. However, launching miniature interstellar probes poses a risk to habitable but sterile oxygen planets. Research suggests that these planets are unlikely to support life due to the corrosive effect of free oxygen.
Massive black holes may have formed in rare, densely populated areas of the early universe, a new study suggests. The team used simulations to model the growth of dark matter halos and found that rapid assembly prevented normal star formation, leading to black hole formation instead.
The Magellanic Clouds, near neighbors of the Milky Way, have increased their star formation rate over the past 2 billion years. This study, led by David Nidever, mapped the chemical compositions of thousands of stars in the clouds, revealing a dramatic difference from the Milky Way's slow start.
Researchers observe evidence of a 'hot cocoon' material enveloping a relativistic jet escaping a dying star, providing insight into the earliest moments of a supernova. The discovery was made using a coordinated approach with space- and ground-based observatories.
The MIRC-X camera allows astronomers to study the inner regions of planet-forming disks, gaining insights into the formation of rocky planets. Scientists can now explore previously inaccessible areas of young stars and gain new understanding of the solar system's early stages.
Researchers from Lehigh University's STAR Collaboration, led by Rosi Reed, use the Beam Energy Scan to test the limits of quark-gluon plasma and map its phase diagram. The goal is to understand the nuclear strong force and Quantum Chromodynamics.
Astronomers have developed a massive library of star spectra, enabling them to reconstruct the composition and history of distant galaxies. By analyzing thousands of stars in our Milky Way galaxy, researchers can build up a "library" of stellar spectra, allowing them to understand the unique mix of stars that makes up each galaxy.
A new study has discovered that oscillating X-rays from consumed stars can reveal the mass and spin of a black hole. By analyzing the quasi-periodic oscillation every 131 seconds, researchers found that the signal is representative of the physical properties of the black hole itself.
Stellar winds from infant stars in the Orion Nebula disrupt the formation of new stars by blowing away seed material. The winds create a bubble that regulates physical conditions and influences star formation activity.
Scientists from the University of Colorado Boulder have developed a new technique for finding galaxy mergers, which may be crucial for building huge galaxies and forming new stars. The method was tested on data from the Sloan Digital Sky Survey and successfully identified fusing galaxies 80% of the time.
Scientists have discovered that dark matter can be heated up and pushed outwards due to star formation in galaxies. This phenomenon, known as 'dark matter heating', has been observed in 16 dwarf galaxies with varying star formation histories.
Scientists used data from NASA's Fermi Gamma-ray Space Telescope to measure all starlight produced over 90% of the universe's history. This analysis provides a reference for future missions exploring stellar evolution and confirms previous measurements of star-formation rates.
Researchers discover Chinese pyramids exhibit surprising orientation patterns, defying expectations of traditional funerary practices. The study suggests that ancient Chinese emperors intentionally aligned their pyramids to the star Polaris, reflecting a deeper understanding of celestial movements and astronomy.
Researchers have discovered a new massive star system dubbed 'Apep,' featuring a slow-moving dust pinwheel that defies current theories on how large stars die. The system's unusual rotation is thought to cause the star to collapse at its poles before the equator, producing a gamma-ray burst.
Researchers have identified a giant, exceptional relic of a disrupted galaxy, comprising an elliptical head and a long tail. The 'tadpole' galaxy is 1 million light-years long from end to end and contains two nearby galaxies within it.
A team of astronomers has identified a giant disrupted 'tadpole' galaxy 300 million light years away, with an elliptical head and a long straight tail. The galaxy is ten times larger than the Milky Way and contains a system of two close disc galaxies.
Researchers have successfully measured the Earth's magnetic field in the sodium layer of the mesosphere using laser-generated artificial stars. This technique allows for ground-based observations of the mesosphere, previously difficult to access, and holds promise for monitoring space weather and measuring electrical currents.
Researchers have observed a powerful outflow of hydrogen gas from the Small Magellanic Cloud, indicating it may eventually stop forming new stars. The discovery provides insight into the evolution of galaxies and the potential source of gas for the enormous Magellanic Stream surrounding the Milky Way.
Researchers found that the Wild Duck Cluster's stars are older than initially thought due to their rotational periods, which affect their hydrogen core mixing and lifetime. This discovery sheds light on how stars form and evolve, challenging previous assumptions about open clusters.
Researchers found a shared origin in one large merger for most halo stars, indicating the Milky Way formed from a massive collision. The young stars from Gaia-Enceladus are younger than native Milky Way stars in the thick disk region.
Researchers observed a powerful outflow of hydrogen gas from the Small Magellanic Cloud, a tiny dwarf galaxy. The discovery provides the first clear observational measurement of mass lost from a dwarf galaxy, shedding light on its slow death and potential impact on the surrounding Milky Way galaxy.
A team of UC Riverside-led scientists have made the best measurement yet of why star formation stops in galaxy clusters in the early universe. They found that it takes a galaxy longer to stop forming stars as the universe gets older, with quenching timescales varying across 70 percent of the universe's history.
Researchers used supercomputers to simulate early universe, revealing formation of first stars and galaxies. Metal-enriched gas enabled rapid star formation, leading to smaller, more numerous stars and galaxy evolution.
A young star with a protoplanetary disc has been discovered to have four Jupiter and Saturn-sized planets in orbit around it. The system's extreme range of orbits raises questions about how such a system might have formed.
Researchers from Instituto de Astrofísica de Canarias have discovered a star with an atmosphere devoid of metals, which is believed to be one of the oldest objects in the Milky Way. The study provides valuable information about the origin of the universe and the formation of the first stars.