ALMA Makes First-Ever Detection of Gas in a Circumplanetary Disk

Scientists using the Atacama Large Millimeter/submillimeter Array (ALMA)— in which the National Radio Astronomy Observatory (NRAO) is a partner— to study planet formation have made the first-ever detection of gas in a circumplanetary disk. What’s more, the detection also suggests the presence of a very young exoplanet.

ALMA obtiene vista privilegiada de duelo entre fuerzas opuestas en incubadora de Gran Nube de Magallanes

Tras usar el Atacama Large Millimeter/submillimeter Array (ALMA) para observar regiones donde se forman estrellas en la Gran Nube de Magallanes, un equipo de investigación descubrió la existencia de un turbulento fenómeno de tira y afloja en la incubadora 30 Doradus. Las observaciones revelaron que, a pesar de una intensa retroalimentación estelar, la gravedad está incidiendo en la forma de la nube molecular y, contra todo pronóstico, fomentando la formación de estrellas jóvenes y masivas. Los resultados de las observaciones se presentaron hoy en una conferencia de prensa durante la asamblea n.o 240 de la Sociedad Astronómica Estadounidense (AAS, en su sigla en inglés), celebrada en Pasadena (California, EE. UU.), y se publicarán la revista The Astrophysical Journal (ApJ).

Undergraduate Researcher Captures Young Galaxy’s “Coming of Age” and Finds Evidence That Early Galaxies May Be Bigger and More Complex Than We Thought

Scientists using the Atacama Large Millimeter/submillimeter Array (ALMA)— an international observatory co-operated by the US National Science Foundation’s National Radio Astronomy Observatory (NRAO)—have observed a significant amount of cold, neutral gas in the outer regions of the young galaxy A1689-zD1, as well as outflows of hot gas coming from the galaxy’s center. These results may shed light on a critical stage of galactic evolution for early galaxies, where young galaxies begin the transformation to be increasingly like their later, more structured cousins. The observations were presented today in a press conference at the 240th meeting of the American Astronomical Society (AAS) in Pasadena, California, and will be published in an upcoming edition of The Astrophysical Journal (ApJ).

Scientists on the Hunt for Planetary Formation Fossils Reveal Unexpected Eccentricities in Nearby Debris Disk

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have imaged the debris disk of the nearby star HD 53143 at millimeter wavelengths for the first time, and it looks nothing like they expected. Based on early coronagraphic data, scientists expected ALMA to confirm the debris disk as a face-on ring peppered with clumps of dust. Instead, the observations took a surprise turn, revealing the most complicated and eccentric debris disk observed to date.

Equipo científico en busca de fósiles de formación planetaria revela inesperadas excentricidades en disco de escombros cercano

Gracias al Atacama Large Millimeter/submillimeter Array (ALMA), un equipo de astrónomos y astrónomas obtuvo la primera imagen de un disco de escombros de la estrella cercana HD 53143 en longitudes de onda milimétricas, y el resultado dista mucho del que se esperaba. Sobre la base de datos coronagráficos, la comunidad científica esperaba que ALMA confirmara que el disco tenía el aspecto de un anillo visto de frente y con aglomeraciones de polvo. En cambio, el estudio reveló el disco más complejo y excéntrico observado a la fecha.

Científicos descubren escurridizo gas de galaxias post brote estelar que se escondía a plena vista

Se creía que las galaxias post brotes de formación estelar agotan a gran velocidad y en violentas erupciones de energía todo el polvo y gas necesario para fabricar estrellas. Los nuevos datos obtenidos por el Atacama Large Millimeter/submillimeter Array (ALMA) revelaron que, en realidad, estas galaxias no se despojan de todo su combustible, sino que entran en un letargo en el que conservan y comprimen grandes cantidades de gas ultraconcentrado y turbulento. No obstante, al contrario de lo que se esperaría, tampoco lo usan para dar nacimiento a nuevas estrellas.

ALMA Scientists Detect Signs of Water in a Galaxy Far, Far Away

Scientists studying SPT0311-58 found H20, along with carbon monoxide in the galaxy, which is located nearly 12.88 billion light years from Earth. Detection of these two molecules in abundance suggests that the molecular Universe was going strong shortly after the elements were forged in early stars.

A Cosmic Whodunit: ALMA Study Confirms What’s Robbing Galaxies of Their Star-Forming Gas

Astronomers examining the nearby Universe with the help of the Atacama Large Millimeter/submillimeter Array (ALMA) have just completed the largest high-resolution survey of star-forming fuel ever conducted in galaxy clusters. But more importantly, they’re tackling a long-standing mystery in astrophysics: what’s killing galaxies? The research, which provides the clearest evidence to date that extreme environments in space have severe impacts on the galaxies within them, will be published in an upcoming edition of The Astrophysical Journal Supplement Series.

Scientists Observe Gas Re-accretion in Dying Galaxies for the First Time

A new study from scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) suggests that previously displaced gases can re-accrete onto galaxies, potentially slowing down the process of galaxy death caused by ram pressure stripping, and creating unique structures more resistant to its effects.

Científicos observan por primera vez reacreción de gas en galaxias moribundas

Un nuevo estudio realizado con datos del Atacama Large Millimeter/submillimeter Array (ALMA) postula que nubes de gas previamente desplazadas pueden volver a acumularse y formar nuevas galaxias mediante acreción, ralentizando de esa forma el proceso de despojo por presión que causa la extinción de las galaxias y creando estructuras únicas más resistentes a dicho fenómeno.

No olviden el surco: científicos usan masa estelar para establecer vínculo entre exoplanetas y discos protoplanetarios

A partir de los datos de más de 500 estrellas jóvenes observadas con el Atacama Large Millimeter/Submillimeter Array (ALMA), los científicos descubrieron un vínculo directo entre las estructuras de los discos protoplanetarios (los discos que rodean a las estrellas y donde se forman planetas nuevos) y las características demográficas de los planetas que allí nacen.

Mind the Gap: Scientists Use Stellar Mass to Link Exoplanets to Planet-Forming Disks

Data from 500 young stars observed with the Atacama Large Millimeter/submilliter Array (ALMA) is giving scientists a window back through time, allowing them to predict what exoplanetary systems looked like through each stage of their formation. And it all starts with a link between higher mass stars, disks with gaps in them, and a high occurrence of observed exoplanets.

Study of Young Chaotic Star System Reveals Planet Formation Secrets

A team of scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) to study the young star Elias 2-27 have confirmed that gravitational instabilities play a key role in planet formation, and have for the first time directly measured the mass of protoplanetary disks using gas velocity data, potentially unlocking one of the mysteries of planet formation.

Cosmic cartographers map the nearby Universe revealing the diversity of star-forming galaxies

A team of astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) has completed the first census of molecular clouds in the nearby Universe. The study produced the first images of nearby galaxies with the same sharpness and quality as optical imaging and revealed that stellar nurseries do not all look and act the same. In fact, they’re as diverse as the people, homes, neighborhoods, and regions that make up our own world.

Record-breaking stellar flare from nearby star recorded in multiple wavelengths for the first time

Scientists using the Atacama Large Millimeter/submillimeter Array (ALMA) observed a record-breaking stellar flare from Proxima Centauri. The study also marks the first time that a powerful stellar flare, other than those from the Sun, has been observed with such complete wavelength coverage.

Discovery points to origin of mysterious ultraviolet radiation

Lyman-alpha blobs (LABs) are gigantic clouds of hydrogen gas that produce ultraviolet light known as Lyman-alpha emissions. A study of Lyman-alpha blob 6 (LAB-6) is the first LAB with infalling gas feature. The findings suggest that star-forming galaxies are likely the primary energy source of Lyman-alpha radiation emitted from LAB-6.