Tag Archive for 'Circumstellar disk'

An artist’s impression of a debris disk around the Sun-like star HD 181327. Image credit: NASA / ESA / CSA / STScI / Ralf Crawford, STScI.

Webb Detects Crystalline Water Ice in Debris Disk around Young, Sun-Like Star

May 14, 2025 by News Staff

Water ice heavily influences the formation of giant planets and may also be delivered by comets to fully formed rocky planets. Using data from the Near-Infrared...

Hubble acquired this image of the circumstellar disk around Vega using the Space Telescope Imaging Spectrograph (STIS). Image credit: NASA / ESA / CSA / STScI / S. Wolff, University of Arizona / K. Su, University of Arizona / A. Gáspár, University of Arizona.

Hubble and Webb Take Closer Look at Planetary Debris Disk around Vega

Nov 1, 2024 by News Staff

There is no obvious evidence for one or more large exoplanets plowing through the face-on debris disk encircling Vega, one of the brightest stars in the...

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...

Chen et al. show that Beta Pictoris has a dynamic circumstellar environment and that periods of enhanced collisions can create large dust clouds that sweep through the planetary system, increasing the dust accretion onto the giant planets Beta Pictoris b and c. Image credit: Roberto Molar Candanosa / Johns Hopkins University / Lynette Cook / NASA.

Webb Detects Giant Collision in Beta Pictoris System

Jun 12, 2024 by News Staff

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have spotted a collision of giant asteroids around Beta Pictoris, the second brightest star...

This artist’s impression shows exocomets orbiting beta Pictoris. Image credit: L. Calçada / ESO.

Webb’s New View of Beta Pictoris Suggests Recent Massive Collision

Jan 10, 2024 by News Staff

Dr. Christopher Stark from NASA’s Goddard Space Flight Center and his colleagues present new coronagraphic images from the NIRCam (Near-Infrared Camera)...

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...

An artist’s impression of HR 6819, a close binary consisting of a stripped B-type star (background) and a rapidly rotating Be star (foreground). Image credit: ESO / L. Calçada.

Rare Be-Type Stars are in Fact Triple Stellar Systems, Astronomers Say

Nov 22, 2023 by News Staff

Be-type stars make up almost 20% of the B star population, and are rapidly rotating stars surrounded by a disk. Although these stars have been known for...

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 artist’s concept portrays PDS 70 and its inner protoplanetary disk. Image credit: NASA / ESA / CSA / J. Olmsted, STScI.

Webb Detects Water in Terrestrial Planet-Forming Zone around PDS 70

Jul 25, 2023 by Enrico de Lazaro

Terrestrial and sub-Neptune exoplanets are expected to form in the inner regions of protoplanetary disks around their parent stars. Water plays a key role...

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...

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...

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...

Artist’s impression of an infant star still surrounded by a protoplanetary disk in which planets are forming. Image credit: L. Calçada / ESO.

ALMA Spots Circumplanetary Disk around Young Star AS 209

Aug 9, 2022 by News Staff

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have detected the emission from 13CO — measure of the molecular gas distribution...

ALMA Images Highly Eccentric Debris Disk around HD 53143

Jun 14, 2022 by Enrico de Lazaro

HD 53143 is a one-billion-year-old solar-type star located 59.8 light-years away in the constellation of Carina. This composite image shows the HD 53143...

This artist’s conception shows exocomets in a young planetary system. Image credit: NASA / JPL-Caltech.

Ukrainian Astronomers Spot Five New Exocomets around Beta Pictoris

Apr 18, 2022 by Sergio Prostak

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS), a team of astronomers from Ukraine has detected the transits of five comets around...

This composite image shows V Hydrae, a carbon-rich AGB star some 1,300 light-years away in the constellation of Hydra. Image credit: ALMA / ESO / NAOJ / NRAO / S. Dagnello, NRAO, AUI & NSF.

ALMA Spots Multi-Ring Structure around Rapidly-Evolving Carbon Star

Mar 29, 2022 by News Staff

Using the Atacama Large Millimeter/submillimeter Wave Array (ALMA), astronomers have observed the carbon-rich star V Hydrae that is apparently transitioning...

This illustration depicts the result of a collision between two large asteroid-sized bodies around a young star. Image credit: NASA / JPL-Caltech.

Spitzer Spots Enormous Debris Cloud around Young Star

Mar 18, 2022 by News Staff

The debris cloud in the terrestrial zone of the 10-million-year-old star HD 166191 was created by a large impact involving objects of several hundred kilometers...

An artist’s impression of the white dwarf star WD 1054-226 orbited by clouds of planetary debris and a major planet in the habitable zone. Image credit: Mark A. Garlick / www.markgarlick.com.

Astronomers Find Planetary Bodies in Habitable Zone of White Dwarf

Feb 11, 2022 by News Staff

Using the ULTRACAM instrument on ESO’s 3.5-m New Technology Telescope and NASA’s Transiting Exoplanet Survey Satellite (TESS), astronomers have observed...

An artist’s impression of a transition disk around an evolved binary star. Image credit: N. Stecki.

Astronomers Spot Second-Generation Planet-Forming Disks around Ancient Binary Stars

Feb 1, 2022 by Enrico de Lazaro

Astronomers have assembled a catalog of all known Galactic binaries featuring massive disks of gas and dust that are similar to the protoplanetary disks...

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