Tag Archive for 'ALMA'

Barsony et al. discovered twin disks and jets erupting from a pair of young stars in WL20. Image credit: NSF / NRAO / B. Saxton / NASA / JPL-Caltech / Harvard-Smithsonian CfA.

Astronomers Spot Parallel Jets and Circumstellar Disks in Nearby Multistar System

Jun 13, 2024 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) and the Mid-Infrared Instrument (MIRI) on the NASA/ESA/CSA James Webb Space Telescope...

This global view of Io was obtained in January 1999 by NASA’s Galileo spacecraft. Image credit: NASA / JPL / University of Arizona.

Study: Jupiter’s Moon Io Has Been Volcanically Active for All of Its History

Apr 24, 2024 by News Staff

Sulfur and chlorine isotopes in Io’s atmosphere indicate that it has been volcanically active for the entire 4.57 billion-year history of the Solar System. This...

An artist’s impression of the center of the starburst galaxy NGC 253. Image credit: NRAO / AUI / NSF.

ALMA Detects Over One Hundred Molecular Species in Nearby Starburst Galaxy

Apr 2, 2024 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected over 100 molecular species in the center of the starburst galaxy...

Planet-forming disks around young stars and their location within the gas-rich cloud of Taurus, roughly 600 light-years from Earth. In total, the scientists observed 43 stars in the Taurus region, all of which are pictured here (though planet-forming disks were only detected in 39 of these targets). Image credit: ESO / Garufi et al. / IRAS.

VLT Finds Protoplanetary Disks around 86 Young Stars

Mar 5, 2024 by News Staff

New observations of 86 planet-forming disks provide astronomers with a wealth of data and unique insights into how planets arise in different regions of...

Berné et al. observed the far-ultraviolet-irradiated protoplanetary disk d203-506 in the Orion Nebula. Image credit: Berné et al., doi: 10.1126/science.adh2861.

UV Radiation from Massive Stars Shapes Nearby Planetary Systems

Feb 29, 2024 by News Staff

For decades, astronomers have known that the powerful light emitted by massive stars can disrupt the swirling planetary disk of dust and gas around young...

This ALMA image shows the water vapor (shades of blue) in the protoplanetary disk around HL Tauri; near the center of the disk, where the young star lives, the environment is hotter and the gas brighter; the red-hued rings are previous ALMA observations showing the distribution of dust around the star. Image credit: ALMA / ESO / NAOJ / NRAO / Facchini et al.

ALMA Detects Water Vapor in Protoplanetary Disk around Young Star

Feb 29, 2024 by Enrico de Lazaro

The water molecule is a key ingredient in the formation of planetary systems. Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA)...

Multiwavelength image of the massive galaxy cluster SDSS J1531+3414. Image credit: NASA / CXC / SAO / Omoruyi et al. / STScI / Tremblay et al. / ASTRON / LOFAR / NASA / CXC / SAO / N. Wolk.

Astronomers Detect Mega-Eruption from Supermassive Black Hole in Distant Galaxy Cluster

Feb 22, 2024 by News Staff

Some of the gas sent gas away from the supermassive black hole — which is located in the center of the galaxy cluster SDSS J1531+3414 (SDSS J1531...

The Event Horizon Telescope Collaboration released new images of M87* from observations taken in April 2018, one year after the first observations in April 2017. The new observations reveal a familiar, bright ring of emission, the same size as as first observed. The brightest part of the ring has shifted by about 30º, to a 5 o’clock position, relative to the 2017 image. Image credit: EHT Collaboration.

New Observations of Messier 87’s Black Hole Support Einstein’s Theory of General Relativity

Jan 23, 2024 by News Staff

In April 2019, the Event Horizon Telescope (EHT) Collaboration reported the first-ever event-horizon-scale images of a black hole, resolving the central...

This simulation illustrates a galaxy disk being disturbed, leading to the propagation of a seismic ripple throughout the disk. Image credit: Bland-Hawthorn & Tepper-Garcia, University of Sydney.

ALMA Detects Seismic Ripples in Disk of Ancient Barred Spiral Galaxy

Dec 26, 2023 by Enrico de Lazaro

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have observed a disk bending wave in BRI 1335-0417, the oldest known spiral galaxy...

This image, taken with the NASA/ESA Hubble Space Telescope on August 30, 2006, shows the dwarf planet Eris (center) and its moon Dysnomia. Image credit: NASA / ESA / M. Brown, California Institute of Technology.

New Research Sheds Light on Internal Structure of Dwarf Planet Eris

Dec 4, 2023 by Natali Anderson

The trans-Neptunian dwarf planet Eris is tidally locked to its small moon Dysnomia. Recently obtained bounds on the mass of Dysnomia demonstrate that Eris...

Left: this image from the Multi Unit Spectroscopic Explorer (MUSE) on ESO’s Very Large Telescope shows the parent cloud LHA 120-N 180B in which the HH 1177 system was first observed. Center: this image shows the jets that accompany HH 1177; the top part of the jet is aimed slightly towards us and thus blueshifted; the bottom one is receding from us and thus redshifted. Right: this image from ALMA shows the rotating disk around the star, similarly with sides moving towards and away from us. Image credit: ESO / ALMA / NAOJ / NRAO / McLeod et al.

ALMA Spots Circumstellar Disk around Young Star in Large Magellanic Cloud

Nov 29, 2023 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected a rotating gaseous structure around an extragalactic massive young...

Rings of dust surrounding HL Tauri, with line patterns showing the orientation of polarized light. Image credit: NSF / AUI / NRAO / B. Saxton / Stephens et al.

ALMA Detects Dust Grains in Gaps of HL Tauri’s Protoplanetary Disk

Nov 21, 2023 by Enrico de Lazaro

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have captured a high-resolution image of HL Tauri, a young star in the constellation...

This image shows the orientation of the magnetic field in the distant galaxy 9io9, seen here when the Universe was only 20% of its current age -- the furthest ever detection of a galaxy’s magnetic field. Image credit: ALMA / ESO / NAOJ / NRAO / Geach et al.

ALMA Detects Galaxy’s Magnetic Field in Early Universe

Sep 6, 2023 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected linearly polarized thermal emission from dust grains in 9io9, a...

This artist’s impression shows the millisecond pulsar PSR J1023+0038 stealing gas from its companion star. Image credit: ESO / M. Kornmesser.

Matter Ejections Explain Peculiar High-Low Mode Switches in Distant Millisecond Pulsar

Aug 30, 2023 by Enrico de Lazaro

The millisecond pulsar PSR J1023+0038 is known to switch between two brightness modes almost constantly, something that until now has been an enigma. This...

This composite image shows V960 Mon, a young star located over 5,000 light-years away in the constellation of Monoceros. Observations obtained using the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE) instrument on ESO’s VLT, represented in yellow in this image, show that the dusty material orbiting V960 Mon is assembling together in a series of intricate spiral arms extending to distances greater than the entire Solar System. Meanwhile, the blue regions represent data obtained with ALMA. The ALMA data peers deeper into the structure of the spiral arms, revealing large dusty clumps that could contract and collapse to form giant planets roughly the size of Jupiter via a process known as gravitational instability. Image credit: ESO / ALMA / NAOJ / NRAO / Weber et al.

Astronomers See Signs of Planet Formation around V960 Mon

Jul 26, 2023 by News Staff

The formation of giant planets has traditionally been divided into two pathways: core accretion and gravitational instability. However, in recent years,...

This ALMA image shows the young planetary system PDS 70. The system features a star at its center, around which the planet PDS 70b (highlighted with a solid yellow circle) is orbiting. On the same orbit as PDS 70b, indicated by a solid yellow ellipse, Balsalobre-Ruza et al. detected a cloud of debris (circled by a yellow dotted line) that could be the building blocks of a new planet or the remnants of one already formed. The ring-like structure that dominates the image is a circumstellar disk of material, out of which planets are forming. There is in fact another planet in this system: PDS 70c, seen at 3 o’clock right next to the inner rim of the disk. Image credit: ALMA / ESO / NAOJ / NRAO / Balsalobre-Ruza et al.

ALMA Detects Possible Trojan Protoplanet around PDS 70

Jul 20, 2023 by Enrico de Lazaro

PDS 70, a young K7-type star some 370 light-years away from Earth in the constellation of Centaurus, is a unique target for planetary formation studies...

This artist’s conception shows the Jupiter-like protoplanet HD 169142b interacting with and heating nearby molecular gas, driving outflows seen in several emission lines, including those from shock-tracing molecules like SO and SiS, and the commonly seen 12CO and 13CO. Image credit: ALMA / ESO / NAOJ / NRAO / M. Weiss / AUI / NSF.

Astronomers Find Chemical Evidence for Planet Formation around HD 169142

Jun 28, 2023 by News Staff

Planets form in dusty, gas-rich circumstellar disks around young stars, while at the same time, the planet formation process alters the physical and chemical...

This image shows the Spiderweb protocluster, seen at a time when the Universe was only 3 billion years old. Image credit: ESO / Di Mascolo et al. / NASA / ESA / Hubble / H. Ford.

ALMA Detects Huge Reservoir of Hot Gas in Very Distant Galaxy Protocluster

Mar 29, 2023 by News Staff

The galaxy protocluster is question is forming around the recently-discovered Spiderweb galaxy (also known as MRC 1138-262 or PKS 1138-262), an object...

V883 Orionis is a unique protostar whose temperature is just hot enough that the water in its circumstellar disk has turned to gas, making it possible for radio astronomers to trace the water’s origins. Image credit: ESO / L. Calçada.

Deuterium-Enriched Water Ties Protoplanetary Disks to Comets and Protostars

Mar 9, 2023 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected gaseous water in the planet-forming disk around V883 Orionis, a...

SPT0418-47 is gravitationally lensed by a foreground galaxy, appearing in the sky as a near-perfect ring of light -- a so-called Einstein ring. Image credit: ALMA / ESO / NAOJ / NRAO / Rizzo et al.

Dusty, Chemically Mature Galaxy Spotted in Early Universe

Feb 28, 2023 by News Staff

The newly-discovered galaxy, SPT0418-SE, and its much larger companion, SPT0418-47, reside in a massive dark-matter halo with yet-to-be-discovered neighbors,...

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