Current Massive Stars News and Events

Current Massive Stars News and Events, Massive Stars News Articles.
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Binary stars are all around us, new map of solar neighborhood shows
A UC Berkeley doctoral student has mined the most recent Gaia survey for all binary stars near Earth and created a 3D atlas of 1.3 million of them. The last local survey included about 200 binary pairs. With such census data, astronomers can conduct statistical analyses on binary populations. For pairs that contain white dwarfs, it's possible to determine the age of their main-sequence companion, and thus of any exoplanets around them. (2021-02-22)

The Milky Way may be swarming with planets with oceans and continents like here on Earth
According to a new study from the University of Copenhagen, Earth, Venus and Mars were created from small dust particles containing ice and carbon. The discovery opens up the possibility that the Milky Way may be filled with aquatic planets. (2021-02-22)

Big galaxies steal star-forming gas from their smaller neighbours
In research published today, astronomers have discovered that large galaxies are stealing the material that their smaller counterparts need to form new stars. (2021-02-22)

The mass of Cygnus X-1's black hole challenges stellar evolution models
Weighing in at roughly 21 solar masses, the black hole in the X-ray binary system Cygnus X-1 is so massive that it challenges current stellar evolution models, a new study reveals. (2021-02-18)

First black hole ever detected is more massive than we thought
An international team, including researchers from National Astronomical Observatories of the Chinese Academy of Sciences (NAOC), found that the first black hole, Cygnus X-1, contains a stellar-mass black hole with 21 solar mass and rotates at a speed close to the speed of light. (2021-02-18)

On the quest for other Earths
An international research team with members from ETH has developed a new method for directly imaging smaller planets in the habitable zone of a neighbouring star system. This opens up new possibilities in the search for extraterrestrial life. (2021-02-17)

The smallest galaxies in our universe bring more about dark matter to light
Our universe is dominated by a mysterious matter known as dark matter. Its name comes from the fact that dark matter does not absorb, reflect or emit electromagnetic radiation, making it difficult to detect. (2021-02-16)

Star employees get most of the credit - and blame
Working with a ''star'' employee - someone who demonstrates exceptional performance and enjoys broad visibility relative to industry peers - offers both risks and rewards, according to new research from the Cornell University's ILR School. (2021-02-16)

Enormous ancient fish discovered by accident
Fossilised remains of a fish that grew as big as a great white shark and the largest of its type ever found have been discovered by accident. (2021-02-15)

Young planets with teenage sun give space studies a lift
Researchers find a new planetary system made up of at least three neighboring planets, ranging in size between that of Earth and Neptune, that orbit the same sun. (2021-02-12)

Vaporised crusts of Earth-like planets found in dying stars
Remnants of planets with Earth-like crusts have been discovered in the atmospheres of four nearby white dwarf stars by University of Warwick astronomers, offering a glimpse of the planets that may have once orbited them up to billions of years ago. (2021-02-11)

Hubble uncovers concentration of small black holes
Scientists were expecting to find an intermediate-mass black hole at the heart of the globular cluster NGC 6397, but instead they found evidence of a concentration of smaller black holes lurking there. New data from the NASA/ESA Hubble Space Telescope have led to the first measurement of the extent of a collection of black holes in a core-collapsed globular cluster. (2021-02-11)

New machine learning theory raises questions about nature of science
A novel computer algorithm, or set of rules, that accurately predicts the orbits of planets in the solar system could be adapted to better predict and control the behavior of the plasma that fuels fusion facilities designed to harvest on Earth the fusion energy that powers the sun and stars. (2021-02-11)

A new way to look for life-sustaining planets
A new system for mid-infrared exoplanet imaging in combination with long observation time allows ground-based telescopes to directly capture images of planets about three times the size of Earth within the habitable zones of nearby stars. (2021-02-10)

A new method to search for potentially habitable planets
Imaging planets orbiting around nearby stars, which could potentially harbour life, has become a possibility thanks to the progress made in observational methods by an international team of astronomers, including Olivier Absil and Anne-Lise Maire, astrophysicists at the STAR Institute of ULi├Ęge. First candidate: Alpha Centauri, a system similar to ours, ''only'' 4.3 light years away. This study is the subject of a publication in the journal Nature Communications. (2021-02-10)

Astronomers uncover mysterious origins of 'super-Earths'
Mini-Neptunes and super-Earths up to four times the size of our own are the most common exoplanets orbiting stars beyond our solar system. Until now, super-Earths were thought to be the rocky cores of mini-Neptunes whose gassy atmospheres were blown away. In a new study published in The Astrophysical Journal, astronomers from McGill University show that some of these exoplanets never had gaseous atmospheres to begin with, shedding new light on their mysterious origins. (2021-02-10)

Astronomers confirm orbit of most distant object ever observed in our solar system
A team of astronomers, including associate professor Chad Trujillo of Northern Arizona University's Department of Astronomy and Planetary Science, have confirmed a planetoid that is almost four times farther from the Sun than Pluto, making it the most distant object ever observed in our solar system. (2021-02-10)

Embry-Riddle alumna helps unravel key mysteries of rare stars
Researchers including recent Embry-Riddle Aeronautical University graduate Laura M. Lee have mapped an elderly star's orbit around its oversized and equally ancient partner. In a scientific first, they have also determined the dynamical mass of both stars that make up a binary system called Wolf-Rayet 133. The team's findings, published Feb. 9, 2021 by Astrophysical Journal Letters, mark the first-ever visually observed orbit of a rare type of star called a Nitrogen-rich Wolf-Rayet (WN) star. (2021-02-09)

Astronomers offer possible explanation for elusive dark-matter-free galaxies
A team led by astronomers at the University of California, Riverside, has found that some dwarf galaxies may today appear to be dark-matter free even though they formed as galaxies dominated by dark matter in the past. (2021-02-09)

Rare blast's remains discovered in Milky Way's center
Astronomers may have found our Galaxy's first example of an unusual kind of stellar explosion. This discovery, made with NASA's Chandra X-ray Observatory, adds to the understanding of how some stars shatter and seed the universe with elements critical for life on Earth. (2021-02-08)

NANOGrav finds possible 'first hints' of low-frequency gravitational wave background
In data gathered and analyzed over 13 years, the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) Physics Frontiers Center (PFC) has found an intriguing low-frequency signal that may be attributable to gravitational waves. (2021-02-04)

The secrets of 3000 galaxies laid bare
The complex mechanics determining how galaxies spin, grow, cluster and die have been revealed following the release of all the data gathered during a massive seven-year Australian-led astronomy research project. (2021-02-02)

At cosmic noon, puffy galaxies make stars for longer
Massive galaxies with extra-large extended ''puffy'' disks produced stars for longer than their more compact cousins, new modelling reveals. (2021-02-02)

Astronomers detect extended dark matter halo around ancient dwarf galaxy
Findings suggest the first galaxies in the universe were more massive than previously thought. (2021-02-01)

Antarctica's ice melt isn't consistent, new analysis shows
Antarctic ice is melting, contributing massive amounts of water to the world's seas and causing them to rise - but that melt is not as linear and consistent as scientists previously thought, a new analysis of 20 years' worth of satellite data indicates. (2021-02-01)

Light pollution linked to preterm births, reduced birth weights
Researchers discovered that light pollution is linked to preterm birth, a shortened gestational length, and reduced birth weight. babies born too early have higher rates of death and disability. In 2018, preterm birth and low birth weight accounted for roughly 17% of infant deaths (deaths before one year of age). Researchers hope this spawns policy discussion around minimizing light pollution. (2021-01-28)

New galaxy sheds light on how stars form
Detailed observations of molecular gas in a tidal dwarf galaxy have important implications for our understanding of how stars are formed. (2021-01-25)

When galaxies collide
It was previously thought that collisions between galaxies would necessarily add to the activity of the massive black holes at their centers. However, researchers have performed the most accurate simulations of a range of collision scenarios and have found that some collisions can reduce the activity of their central black holes. The reason is that certain head-on collisions may in fact clear the galactic nuclei of the matter which would otherwise fuel the black holes contained within. (2021-01-25)

NASA's Roman mission will probe galaxy's core for hot Jupiters, brown dwarfs
NASA's Roman Space Telescope will conduct a microlensing survey to reveal worlds that are similar to the planets in our solar system. Now, a new study shows that the same survey will also unveil more extreme planets and planet-like bodies in the heart of the galaxy, thanks to their gravitational tug on the stars they orbit. (2021-01-25)

Alpha particles lurk at the surface of neutron-rich nuclei
Scientists from an international collaboration have found evidence of alpha particles at the surface of neutron-rich heavy nuclei, providing new insights into the structure of neutron stars, as well as the process of alpha decay. (2021-01-21)

Search for axions from nearby star Betelgeuse comes up empty
An MIT-led search for axions from nearby star Betelgeuse has come up empty, significantly narrowing the search for hypothetical dark matter particle. (2021-01-21)

A 'super-puff' planet like no other
A Canadian-led team of astronomers discovers that the core mass of exoplanet WASP-107b is much lower than previously thought possible for a gas-giant planet. (2021-01-18)

Study: X-Rays surrounding 'Magnificent 7' may be traces of sought-after particle
A new study, led by a theoretical physicist at Berkeley Lab, suggests that never-before-observed particles called axions may be the source of unexplained, high-energy X-ray emissions surrounding a group of neutron stars. (2021-01-15)

A most distant signal
Nearly every galaxy hosts a monster at its center -- a supermassive black hole millions to billions times the size of the Sun. Some of these black holes are particularly active, whipping up stars, dust and gas into glowing accretion disks emitting powerful radiation into the cosmos as they consume matter around them. These quasars are some of the most distant objects that astronomers can see, and there is now a new record for the farthest one ever observed. (2021-01-15)

Galaxies hit single, doubles, and triple (growing black holes)
When three galaxies collide, what happens to the huge black holes at the centers of each? A new study using NASA's Chandra X-ray Observatory and several other telescopes reveals new information about how many black holes are furiously growing after these galactic smash ups. (2021-01-14)

Mapping our sun's backyard
Astronomers have curated the most complete list of nearby brown dwarfs to date thanks to discoveries made by thousands of volunteers participating in the Backyard Worlds citizen science project. The list and 3D map of 525 brown dwarfs -- including 38 reported for the first time -- incorporate observations from a host of astronomical instruments including several NOIRLab facilities. The results confirm that the Sun's neighborhood appears surprisingly diverse relative to other parts of the Milky Way Galaxy. (2021-01-14)

Astronomers document the rise and fall of a rarely observed stellar dance
Astronomers have catalogued 126 years of changes to HS Hydra, a rare evolving eclipsing binary star system. Analyzing observations from astro-photographic plates in the late 1800s to TESS observations in 2019, they show that the two stars in HS Hydra began to eclipse each other around a century ago, peaking in the 1960s. The degree of eclipsing then plummeted over the course of just a half century, and will cease around February 2021. (2021-01-14)

Limits of atomic nuclei predicted
Novel calculations have enabled the study of nearly 700 isotopes between helium and iron, showing which nuclei can exist and which cannot. In an article published in Physical Review Letters, scientists from TU Darmstadt, the University of Washington, the Canadian laboratory TRIUMF, and the University of Mainz report how they simulated for the first time using innovative theoretical methods a large region of the chart of nuclides based on the theory of the strong interaction. (2021-01-13)

Rare star's giant gamma-ray burst GRB 204015A captured close to our home galaxy
Earth gets blasted by mild gamma ray bursts most days. But sometimes a giant flare like GRB 200415A arrives at our galaxy, sweeping along energy that dwarfs our sun. It erupted from a rare, powerful neutron star called a magnetar - giving new clues to GRB origins - and from relatively nearby. The extreme explosions from these bursts can disrupt mobile phone reception, and can also be messengers from the very early history of the universe. (2021-01-13)

Most distant quasar discovered sheds light on how black holes grow
A team of astronomers led by the University of Arizona has observed the most distant quasar to date. Fully formed just 670 million years after the Big Bang, the quasar is 1000 times more luminous than the Milky Way. It is powered by the earliest known supermassive black hole, which weighs in at more than 1.6 billion times the mass of the sun. The discovery provides insight into the formation of massive galaxies in the early universe. (2021-01-12)

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