Tag Archive for 'Gas'

Clumps of molecular gas overlaid on Sagittarius A* circumnuclear disk as seen by ALMA in the CS(7-6) line. Yellow circles are thin clumps that are going to be shredded by the gravitational force of supermassive black hole Sagittarius A*. Green circles are dense enough to survive the tidal shredding but are not able to form stars. Purple/pink circles have the needed density to form stars, but no star formation has been observed. Image credit: Hsieh et al. / ALMA / EOS / NAOJ / NRAO.

ALMA Spots Quiescent Molecular Clouds and Tides around Milky Way’s Supermassive Black Hole

Sep 16, 2021 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found thousands of dense gas clumps but, surprisingly, no star formation,...

Location of the observed O- and B- type stars on the Galactic plane. Image credit: De Cia et al., doi: 10.1038/s41586-021-03780-0.

Milky Way’s Interstellar Medium Is Not Homogeneous, New Study Shows

Sep 9, 2021 by Natali Anderson

Astronomers using the NASA/ESA Hubble Space Telescope have measured the metallicity of the neutral interstellar medium towards 25 bright stars in our Milky...

Artist’s impression of a volcano erupting on Venus. Image credit: ESA / AOES Medialab.

Phosphine in Atmosphere of Venus Points to Explosive Volcanic Activity

Jul 13, 2021 by News Staff

In 2020, planetary scientists detected small amounts of the biosignature gas phosphine (PH3) in the atmosphere of Venus using the James Clerk Maxwell Telescope...

This image from NASA’s Chandra X-ray Observatory shows the supernova remnant MSH 15-52. Image credit: NASA / SAO / NCSU / Borkowski et al.

NASA’s Chandra X-ray Observatory Watches Fast Blast Wave from Exploded Star

Jun 25, 2021 by News Staff

A stellar structure known as the ‘Hand of God’ is a nebula of energy and particles blown by a pulsar left behind after a star exploded in our Milky...

An artist’s impression of a galactic wind driven by a supermassive black hole located in the center of a galaxy. Image credit: ALMA / ESO / NAOJ / NRAO.

ALMA Detects Powerful Black-Hole Wind in Distant Quasar

Jun 17, 2021 by News Staff

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have detected a galactic-scale supermassive black hole-driven wind in HSC J124353.93+010038.5...

This image from NASA’s Galileo spacecraft shows a volcanic explosion on Io. Image credit: NASA / JPL / University of Arizon.

ALMA Detects Volcanic Gases in Atmosphere of Io

Apr 7, 2021 by Natali Anderson

Using data from the Atacama Large Millimeter/Submillimeter Array (ALMA), astronomers from India have detected acetone, disulfur monoxide, and carbon monoxide...

An artist’s impression of a thin gas cloud formed by tidal disruption from a passing star. Wang et al. think this is one of the possible ways the cold clump of gas detected in the study could have been formed. Image credit: Mark Myers / OzGrav.

Radio Astronomers Detect ‘Invisible’ Filament of Cold Gas

Feb 5, 2021 by News Staff

Using CSIRO’s Australian Square Kilometre Array Pathfinder (ASKAP) and background radio galaxies, astronomers have spotted a long cloud of cold hydrogen...

An artist’s impression of the ID2299 galaxy. Image credit: M. Kornmesser / ESO.

Galaxy Mergers May Play Important Role in Quenching of Star Formation in Massive Galaxies

Jan 12, 2021 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered a massive starburst galaxy with a tail of star-forming gas in...

Simulation showing the distribution of hot gas (left), compared with the eROSITA X-ray image (right) of the Abell 3391-Abell 3395 system. Image credit: Reiprich et al., doi: 10.1051/0004-6361/202039590.

Astronomers Discover Longest Filament of Intergalactic Gas Yet

Dec 17, 2020 by News Staff

Using the eROSITA X-ray telescope onboard the Spectrum-Roentgen-Gamma (SRG) space observatory and CSIRO’s Australian Square Kilometre Array Pathfinder...

This Hubble image of the nearby active galaxy IC 5063 reveals a mixture of bright rays and dark shadows coming from the blazing core, home of a supermassive black hole. Image credit: Credits: NASA / ESA / Hubble / STScI / W.P. Maksym, CfA.

Hubble Spots Shadow of Supermassive Black Hole’s Torus in IC 5063

Nov 23, 2020 by News Staff

Astronomers using the NASA/ESA Hubble Space Telescope have observed spectacular large-scale dark and light rays beaming out of the bright center of IC...

This composite image of the planetary nebula IC 4593 contains X-rays (Chandra) from gas that has been heated to over a million degrees. These high temperatures were likely generated by material that blew away from the shrunken core of the star and crashed into gas that had previously been ejected by the star. Visible light data from Hubble in the image show combinations of nitrogen, oxygen, and hydrogen. Image credit: NASA / CXC / UNAM / J. Toala et al. / STScI.

Chandra Finds Hot Bubble in Planetary Nebula IC 4593

Nov 13, 2020 by Enrico de Lazaro

Astronomers using NASA’s Chandra X-ray Observatory have spotted a bubble of ultrahot gas at the center of a planetary nebula called IC 4593. This composite...

This composite image shows the galaxy cluster HSC J023336-053022, also known as ACT-CL J0233.6-0530 or XLSSC 105. Image credit: Green Bank Observatory / National Science Foundation / Subaru Telescope / National Astronomical Observatory of Japan / HSC-SSP Collaboration / ESA / XMM-Newton / XXL Survey Consortium.

Giant Galaxy Cluster Acts as Cosmic Furnace

Nov 12, 2020 by News Staff

HSC J023336-053022, a massive galaxy cluster located approximately 4 billion light-years away from Earth, is heating the material within it to hundreds...

As the Universe evolves, matter concentrations are surrounded by gas halos getting hotter and bigger. Image credit: D. Nelson / Illustris Collaboration.

Universe is Getting Hotter, Says New Study

Nov 10, 2020 by News Staff

The mean temperature of gas across the Universe has increased more than 10 times over the last 10 billion years and reached about 2 million Kelvin today,...

This image shows the protoplanetary disc surrounding the young star HL Tauri. Image credit: ALMA / ESO / NAOJ / NRAO.

New Research Sheds Light on Evolution of Interstellar Gas Clouds

Sep 15, 2020 by News Staff

HL Tauri, a young star located 450 light-years away in the constellation of Taurus, is glowing at the center of an system of concentric protoplanetary...

The Magellanic Stream in zenithal equal-area coordinates: (a) observed H I data for the Magellanic Stream, with the line-of-sight velocity indicated by the color scale and the relative gas column density indicated by the brightness; the points represent the sightlines with ultraviolet-absorption-line observations from the NASA/ESA Hubble Space Telescope, colored by their line-of-sight velocity; these points show the extent of the ionized gas associated with the stream; (b) the results of the model including the Magellanic Corona and the Milky Way’s hot corona; gas originating in the disks of the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC) is shown in the model, without separating neutral gas from ionized gas; this affects the morphology of the stream, causing the model to appear smoother and less fragmented than the data; however, the model reproduces the current spatial location and velocity of both clouds, and the velocity gradient of the gas along the stream; the Milky Way disk and background are extracted from real H I images. Image credit: Lucchini et al, doi: 10.1038/s41586-020-2663-4.

Huge Halo of Warm Gas around Magellanic Clouds is Key to Formation of Magellanic Stream

Sep 9, 2020 by News Staff

A team of astronomers from Australia and the United States has found that a halo of warm ionized gas surrounding the Large and Small Magellanic Clouds...

An artist’s impression of plasma jets coming from a supermassive black hole in the central galaxy of the Phoenix cluster. Image credit: NAOJ.

Astronomers Detect Black-Hole Jets in Central Galaxy of Phoenix Cluster

Sep 1, 2020 by Enrico de Lazaro

Astronomers using the Australia Telescope Compact Array (ATCA) have detected plasma jets coming from a supermassive black hole in the central galaxy of...

This image shows the location of the 43 quasars Lehner et al used to probe Andromeda’s gaseous halo. These quasars are scattered far behind the halo, allowing scientists to probe multiple regions. Looking through the immense halo at the quasars’ light, the team observed how this light is absorbed by the halo and how that absorption changes in different regions. By tracing the absorption of light coming from the background quasars, the astronomers are able to probe the halo’s material. Image credit: NASA / ESA / E. Wheatley, STScI.

Astronomers Create Map of Andromeda Galaxy’s Gaseous Halo

Aug 28, 2020 by News Staff

Astronomers using the NASA/ESA Hubble Space Telescope have found that a halo of diffuse plasma around the Andromeda galaxy, which is located 2.5 million...

Supermassive black holes at the cores of galaxies blast radiation and ultra-fast winds outward, as illustrated in this artist’s conception. Image credit: NASA / JPL-Caltech.

Astronomers Detect Anomalous Cold Gas Outflow from Milky Way’s Center

Aug 20, 2020 by News Staff

Astronomers have observed cold, dense and high-velocity molecular gas outflowing from the center of our Milky Way Galaxy. The presence of this gas is puzzling,...

This ALMA image shows the planet-forming disk around the young star RU Lupi. The inset image (lower left, red disk) shows the DSHARP observation of the dust disk with rings and gaps that hint at the presence of forming planets. The new observation shows a large spiral structure (blue), made out of gas, that spans far beyond the compact dust disk. Image credit: ALMA / ESO / NAOJ / NRAO / J. Huang and S. Andrews / AUI / NSF / S. Dagnello.

ALMA Spots Gaseous Spiral Arms around Young Variable Star

Aug 4, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered a giant set of spiral arms around the young variable star RU...

An artist’s impression of the immediate vicinity of the massive protostar G358.93-0.03-MM1. Image credit: Xi Chen, Guangzhou University / Zhi-Yuan Ren, National Astronomical Observatories, Chinese Academy of Science.

Astronomers Detect Spiral-Arm Structures around High-Mass Protostar

Jul 14, 2020 by Enrico de Lazaro

New observations of a high-mass protostar in the massive star-forming region G358.93-0.03 shed light on how these young stellar objects accumulate their...

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