Tag Archive for 'Star'

Morphology evolution of X7’s thermal dust emission between 2002 and 2021: the images are oriented with equatorial north at the top and with Sagittarius A* positioned in the upper left corner of each panel. Image credit: Ciurlo et al., doi: 10.3847/1538-4357/acb344.

Astronomers Observe Elongated Object near Milky Way’s Central Black Hole

Feb 27, 2023 by News Staff

An elongated dust and gas feature named X7 has a mass of about 50 Earth masses and is on an orbital path around Sagittarius A*, the supermassive black...

An artist’s impression of a supermassive black hole. Image credit: University of Hawai’i at Mānoa.

Astrophysicists Uncover First Observational Evidence of Cosmological Coupling

Feb 15, 2023 by News Staff

Cosmological coupling — a newly-predicted phenomenon in Albert Einstein’s theory of gravity — allows black holes to grow in mass without...

An artist’s impression of the four classes of planetary system architecture. Image credit: Tobias Stierli / NCCR PlanetS.

Astronomers Identify Four Classes of Planetary System Architecture

Feb 14, 2023 by News Staff

Dr. Lokesh Mishra and his colleagues from the University of Bern and Geneva Observatory propose that the space of planetary system architectures be partitioned...

Dey et al. uncovered striking new evidence for a mass migration of stars into the Andromeda galaxy. Image credit: KPNO / NOIRLab / AURA / NSF / Local Group Survey Team / T.A. Rector, University of Alaska Anchorage / D. de Martin / M. Zamani.

Galactic Immigration Event Occurred in Andromeda Galaxy 1-2 Billion Years Ago

Feb 8, 2023 by News Staff

The Andromeda galaxy (Messier 31), which is located 2.5 million light-years away, is the Milky Way’s nearest large galactic neighbor. By measuring the...

This image shows how microlensing was used to measure the mass of the white dwarf LAWD 37. The inset box plots how the dwarf passed in front of a background star in 2019. The wavy blue line traces the dwarf’s apparent motion across the sky as seen from Earth. Image credit: NASA / ESA / Peter McGill, UC Santa Cruz, IoA / Kailash Sahu, STScI / Joseph DePasquale, STScI.

Astronomers Directly Measure Mass of Isolated White Dwarf

Feb 2, 2023 by News Staff

In November 2019, the nearby single, isolated white dwarf LAWD 37 aligned closely with a distant background source and caused a so-called microlensing...

An artist’s impression of the Robert C. Byrd Green Bank Telescope receiving signals from space. Image credit: Danielle Futselaar / Breakthrough Listen.

Artificial Intelligence Detects New Technosignature Signals of Interest

Jan 31, 2023 by News Staff

In a new paper published in the journal Nature Astronomy, astronomers with Breakthrough Listen Initiative — the largest ever scientific research...

This illustration shows what Chariklo and its rings could look like, based on our current understanding. Image credit: NASA / ESA / CSA / Leah Hustak, STScI.

Webb Detects Water Ice on Chariklo, Spies Its Ring System

Jan 30, 2023 by News Staff

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have captured the reflectance spectrum of the double-ringed centaur 10199 Chariklo and observed...

An artist’s impression of a magnetar eruption. Image credit: NASA’s Goddard Space Flight Center.

Astronomers Detect Spin-Down Glitch in Distant Magnetar

Jan 27, 2023 by News Staff

Magnetars are a special subset of the isolated neutron star family, with X-ray and radio emission mainly powered by the decay of their immense magnetic...

An orbiting star begins to eclipse its partner, a rapidly rotating, superdense stellar remnant called a pulsar, in this illustration. Image credit: NASA / Sonoma State University / Aurore Simonnet.

Fermi Detects Gamma-Ray Eclipses from Seven ‘Spider’ Binary Systems

Jan 26, 2023 by News Staff

Spider binary systems contain a pulsar — the superdense, rapidly rotating remains of a star that exploded as a supernova — that slowly erodes...

This image is a small extract of the DECaPS2 survey of the Milky Way. Image credit: DECaPS2 / DOE / FNAL / DECam / CTIO / NOIRLab / NSF / AURA / M. Zamani & D. de Martin, NSF’s NOIRLab.

Astronomers Release Gargantuan Survey of Milky Way’s Galactic Plane

Jan 24, 2023 by News Staff

The second data release of the Dark Energy Camera Plane Survey (DECaPS2), which took two years to complete and produced more than 10 terabytes of data...

This Webb image features the central region of the Chameleon I dark molecular cloud, which resides 630 light-years away in the constellation of Chamaeleon; the cold, wispy cloud material (blue, center) is illuminated in the infrared by the glow of the young, outflowing protostar Ced 110 IRS 4 (orange, upper left); the light from numerous background stars, seen as orange dots behind the cloud, can be used to detect ices in the cloud, which absorb the starlight passing through them. Image credit: NASA / ESA / CSA / M. Zamani, ESA & Webb / F. Sun, Steward Observatory / Z. Smith, Open University / Ice Age ERS Team.

Webb Reveals Rich Composition of Interstellar Molecular Cloud Ices

Jan 23, 2023 by News Staff

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected water ice as well as frozen forms of carbonyl sulfide, ammonia, methane, and...

This Hubble image shows two stars: the Orion variable star V 372 Orionis and the emission-line star BD-05 1307. Image credit: NASA / ESA / Hubble / J. Bally / M. Robberto.

Hubble Spots Two Prominent Stars in Orion Nebula

Jan 23, 2023 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have taken a detailed image of a small part of the famous Orion Nebula. This Hubble image shows two...

A part of the Galactic plane as seen by the ASKAP radio telescope and the Parkes radio telescope, Murriyang, showing supernova remnants and the space between the stars. Image credit: R. Kothes, NRC / PEGASUS Team.

Radio Astronomers Discover New Supernova Remnants in Milky Way Galaxy

Jan 17, 2023 by News Staff

Using the ASKAP and Parkes radio telescopes in Australia, astronomers have observed a large section of the Galactic plane of the Milky Way. A part of the...

This illustration shows the inner and outer halos of our Milky Way Galaxy. Image credit: NASA / ESA / A. Feild, STScI.

Milky Way’s Stellar Halo is At Least Two Million Light-Years Across

Jan 16, 2023 by News Staff

Astronomers from the University of California, Santa Cruz and elsewhere have discovered 208 new RR Lyrae variable stars in the halo of our Milky Way Galaxy;...

This image, taken by the Near-Infrared Camera (NIRCam) onboard the NASA/ESA/CSA James Webb Space Telescope, shows the star cluster NGC 346. Webb reveals the presence of many more building blocks than previously expected, not only for stars, but also planets, in the form of clouds packed with dust and hydrogen. The plumes and arcs of gas in this image contains two types of hydrogen. The pink gas represents energized hydrogen, which is typically as hot as around 10,000 degrees Celsius (approximately 18,000 degrees Fahrenheit) or more, while the more orange gas represents dense, molecular hydrogen, which is much colder at around minus 200 degrees Celsius or less (approximately minus 300 degrees Fahrenheit), and associated dust. The colder gas provides an excellent environment for stars to form, and, as they do, they change the environment around them. The effect of this is seen in the various ridges throughout, which are created as the light of these young stars breaks down the dense clouds. The many pillars of glowing gas show the effects of this stellar erosion throughout the region. In this image blue was assigned to the wavelength of 2.0 microns (F200W), green was assigned to 2.77 microns (F277W), orange was assigned to 3.35 microns (F335M), and red was assigned to 4.44 microns (F444W). Image credit: NASA / ESA / CSA / O. Jones, UK ATC / G. De Marchi, ESTEC / M. Meixner, USRA / A. Pagan, STScI / N. Habel, USRA / L. Lenkic, USRA / L. Chu, NASA’s Ames Research Center.

Webb Probes Most Massive Star-Forming Region of Small Magellanic Cloud

Jan 13, 2023 by Enrico de Lazaro

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have revealed many new pockets of star formation in NCG 346, an open star cluster in the...

A neutron star (blue sphere) spins in the center of a colorful disk of gas, some of which follows the magnetic field (blue lines) and flows (blue-white arcs) onto the object’s surface. Image credit: NASA’s Goddard Space Flight Center Conceptual Image Lab.

Astronomers Discover Short-Lived Superheavy Neutron Stars

Jan 10, 2023 by News Staff

Astronomers have examined data about 700 short gamma-ray bursts (GRBs) detected with NASA’s Neil Gehrels Swift Observatory, Fermi Gamma-ray Space Telescope,...

This artist’s conception shows a zoomed in view of MWC 349A and its surrounding disk of gas and dust that are being shaped by the winds and high-speed jet. Image credit: ALMA / ESO / NAOJ / NRAO / M. Weiss, NRAO, AUI & NSF.

ALMA Spots Hidden Jet from Oddball Star MWC 349A

Jan 9, 2023 by News Staff

The jet observed by the Atacama Large Millimeter/submillimeter Array (ALMA) is ejecting material away from MWC 349A at a blistering 500 km per second (311...

Montage of Webb images showing six example barred galaxies, two of which represent the highest lookback times quantitatively identified and characterized to date. The labels in the top left of each figure show the lookback time of each galaxy, ranging from 8.4 to 11 billion years ago (Gyr), when the Universe was a mere 40% to 20% of its present age. Image credit: NASA / CEERS / University of Texas at Austin.

Webb Finds Six Barred Galaxies in Early Universe

Jan 5, 2023 by Enrico de Lazaro

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have spotted early galaxies with stellar bars — elongated features of stars stretching...

These Hubble images show two massive galaxy clusters: MOO J1014+0038 (left) and SPT-CL J2106-5844 (right). The artificially added blue color is translated from Hubble data that captured a phenomenon called intracluster light. This extremely faint glow traces a smooth distribution of light from wandering stars scattered across the cluster. Billions of years ago the stars were shed from their parent galaxies and now drift through intergalactic space. Image credit: NASA / ESA / STScI / James Jee, Yonsei University / Joseph DePasquale, STScI.

Hubble Detects Intracluster Light from Distant Galaxy Clusters

Jan 5, 2023 by News Staff

Intracluster light is diffuse light from stars that are gravitationally bound not to individual member galaxies, but to the halo of galaxy clusters. In...

This Hubble image shows the globular cluster NGC 1850, which is located in the Large Magellanic Cloud, over 160,000 light-years from Earth. For this image, five filters were used with the camera to gather data. Two of the filters were at near-ultraviolet wavelengths, two more at visible light wavelengths, and the final one was in the near-infrared. The data gathered through the two ultraviolet filters is violet and blue. The data from the two visible light filters is green and orange. The color red denotes near-infrared data. The image follows chromatic order, which means the shortest wavelength in the image is blue while the longest wavelength is red. Chromatic order allows us to visualize wavelengths of light beyond our eye’s sensitivity in a way that is familiar to us. Image credit: NASA / ESA / N. Bastian, Donostia International Physics Center / Gladys Kober, NASA & Catholic University of America.

Hubble Space Telescope Captures Dual Views of NGC 1850

Jan 3, 2023 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have taken two amazing images of NGC 1850, a young globular cluster located in the Large Magellanic...

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