Nature, Published online: 24 November 2023; doi:10.1038/d41586-023-03559-5
The extra ingredient would explain why the Universe is expanding so fast now — but conflicts with data from ancient quasars.Nature, Published online: 23 November 2023; doi:10.1038/d41586-023-03677-0
Scientists spot a particle of intense energy, but explaining where it came from might require some new physics.The ESO–Government of Chile Joint Committee has announced the 20 winning projects of the 2023 call, which will distribute 563 million Chilean pesos.
The ESO–Government of Chile Joint Committee funds will be invested in initiatives dedicated to developing scientific and technological research and promoting cooperation in the astronomical field. Astronomy dissemination and education projects throughout Chile will also be financed.
This year, the Committee received 94 applications, a record number over the entire fund history, 45% more than in 2022. Of the total, 50% of the applications fall in scientific research, while 30% were proposals for the dissemination and education of astronomical science.
“We are very happy with the increase in applications; this means that astronomy, and particularly this fund, is consolidated as a development tool in the Chilean community”, said Luis Chavarría, ESO representative in Chile, after the results were delivered.
Since 1996, the ESO–Government of Chile Joint Committee has been one of the main funds for the development of the area as it supports postdoctoral programmes and academic positions in astronomy in Chilean institutions. In addition, it finances national and foreign scientific visits, technology demonstrators, and educational programs for teaching and disseminating this science in the country.
The Joint Committee of ESO–Government of Chile is made up of representatives of ESO and the Government of Chile through the Directorate of Energy, Science and Technology and Innovation of the Ministry of Foreign Affairs, the Ministry of Science, Technology, Knowledge and Innovation and the Chilean Astronomy Society.
The winning projects of the ESO-Government of Chile 2023 Joint Committee are:
Institution / Institución
Person Responsible / Persona responsable
Name of the project / Nombre del proyecto
Type / Tipo*
Funds in pesos / Fondos en pesos
Duration in months / Duración en meses
Universidad Diego Portales
Evelyn Johnston
Characterisation of the stellar populations in the globular cluster systems of nearby galaxies
1
54.297.600
24
Universidad Católica del Norte
José G. Fernández Trincado
High-precision Multi-epoch Radial Velocity and K-band elemental abundances of Chemically Anomalous Giant Stars
1
54.297.600
24
Instituto de Astrofisica, Universidad Andres Bello
Laurent Chemin
Kinematics and structure of the Milky Way interstellar medium with Gaia
1
54.297.600
24
Universidad Andrés Bello
Macarena Lagos
Precision constraints of gravity with multi-messenger observations
1
54.297.600
24
Universidad de Atacama
Christopher Haines
Creating capabilities at the Universidad de Atacama to enable the 4MOST-CHANCES survey
1
54.297.600
24
Universidad de Chile
Laura Pérez
The Role of Gas and Solids in Young and Old Protoplanetary Disks: Insights from ALMA
1
54.297.600
24
Universidad de Santiago de Chile
Valeria Olivares
Advancing gender equality in USACH's pioneering astrophysics and data science degree
2
77.000.000
24
Universidad Técnica Federico Santa María
Rory Smith & Antonio Montero
Bringing Astronomy & Physics closer together at USM San Joaquin
2
72.000.000
24
Universidad de Valparaíso
Alfredo Vega
Taller de Pintura Cósmica
3
5.000.000
12
Universidad de Talca
Caddy Cortés
Escuela para Futuras Científicas
3
6.500.000
24
Sociedad Chilena de Astronomía
Vania Rodríguez
"Expedición Los Lagos 2024: llevando la astronomía a todos los rincones"
3
5.600.000
18
Corporación Privada para la Divulgación de la Ciencia y Tecnología
María Constanza Silva Troncoso
“Revisión y actualización del contenido educativo y museográfico del Salón de Astronomía del Museo de Ciencia y Tecnología”
3
18.505.550
12
Universidad Central de Chile
Juan Aldebarán Magaña Zapata
Astronomía en el Espectro
3
3.250.000
12
Universidad de Santiago de Chile
Carla Hernández Silva
Equipo Pedagógico CIRAS: cerrando brechas entre la astronomía y el aula III
3
6.600.000
12
Museo Interactivo Mirador
Sergio Vásquez Godoy
Observatorio de difusión de la astronomía en Chile
3
7.130.000
13
Universidad de Concepción
Pablo Solano
The Cosmic Dust Experiment: improving the optical system for astrochemical desorption studies
4
15.000.000
24
Sociedad Chilena de Astronomía (SOCHIAS)
Jeremy Tregloan-Reed
Chilean Representation to the Astronomy & Astrophysics journal
5
3.000.000
12
Sociedad Chilena de Astronomía (SOCHIAS)
Virginia Cuomo
SOCHIAS grant “BECA ADELINA” for student participation at conferences and short period visits
5
6.000.000
12
Universidad de Chile
Patricio Rojo
First Chilean Astrobiology Workshop
5
8.000.000
12
Universidad de Atacama
Lorenzo Morelli
BARS IN INTERACTING GALAXIES THROUGH HALPHA FILTER VIEW
6
4.500.000
1
Type*
Nature, Published online: 22 November 2023; doi:10.1038/d41586-023-03500-w
The space telescope has helped to determine the atmospheric composition of an exoplanet using the light spectrum of its host star. Spectral changes as the planet orbits the star reveal the long-sought presence of exoplanetary methane.Nature, Published online: 22 November 2023; doi:10.1038/s41586-023-06687-0
Transmission and emission spectra of the 825 K warm Jupiter WASP-80b taken with the NIRCam instrument of the JWST show strong evidence of CH4 at greater than 6σ significanceNature, Published online: 23 November 2023; doi:10.1038/d41586-023-03678-z
Education, female leadership and gender-balanced hiring policies were key.Nature, Published online: 21 November 2023; doi:10.1038/d41586-023-03610-5
A team of amateur and professional astronomers has determined that a satellite one-third of the size of a tennis court is one of the brightest objects in the sky — with dire consequences for ground-based astronomy.The latest image from NASA’s James Webb Space Telescope shows a portion of the dense center of our galaxy in unprecedented detail, including never-before-seen features astronomers have yet to explain. The star-forming region, named Sagittarius C (Sgr C), is about 300 light-years from the Milky Way’s central supermassive black hole, Sagittarius A*.
Image: Sagittarius C (NIRCam) The NIRCam (Near-Infrared Camera) instrument on NASA’s James Webb Space Telescope’s reveals a portion of the Milky Way’s dense core in a new light. An estimated 500,000 stars shine in this image of the Sagittarius C (Sgr C) region, along with some as-yet unidentified features. A large region of ionized hydrogen, shown in cyan, contains intriguing needle-like structures that lack any uniform orientation.NASA, ESA, CSA, STScI, and S. Crowe (University of Virginia).“There’s never been any infrared data on this region with the level of resolution and sensitivity we get with Webb, so we are seeing lots of features here for the first time,” said the observation team’s principal investigator Samuel Crowe, an undergraduate student at the University of Virginia in Charlottesville. “Webb reveals an incredible amount of detail, allowing us to study star formation in this sort of environment in a way that wasn’t possible previously.”
“The galactic center is the most extreme environment in our Milky Way galaxy, where current theories of star formation can be put to their most rigorous test,” added professor Jonathan Tan, one of Crowe’s advisors at the University of Virginia.
ProtostarsAmid the estimated 500,000 stars in the image is a cluster of protostars – stars that are still forming and gaining mass – producing outflows that glow like a bonfire in the midst of an infrared-dark cloud. At the heart of this young cluster is a previously known, massive protostar over 30 times the mass of our Sun. The cloud the protostars are emerging from is so dense that the light from stars behind it cannot reach Webb, making it appear less crowded when in fact it is one of the most densely packed areas of the image. Smaller infrared-dark clouds dot the image, looking like holes in the starfield. That’s where future stars are forming.
Webb’s NIRCam (Near-Infrared Camera) instrument also captured large-scale emission from ionized hydrogen surrounding the lower side of the dark cloud, shown cyan-colored in the image. Typically, Crowe says, this is the result of energetic photons being emitted by young massive stars, but the vast extent of the region shown by Webb is something of a surprise that bears further investigation. Another feature of the region that Crowe plans to examine further is the needle-like structures in the ionized hydrogen, which appear oriented chaotically in many directions.
“The galactic center is a crowded, tumultuous place. There are turbulent, magnetized gas clouds that are forming stars, which then impact the surrounding gas with their outflowing winds, jets, and radiation,” said Rubén Fedriani, a co-investigator of the project at the Instituto Astrofísica de Andalucía in Spain. “Webb has provided us with a ton of data on this extreme environment, and we are just starting to dig into it.”
Image: Sagittarius C Features Approximate outlines help to define the features in the Sagittarius C (Sgr C) region. Astronomers are studying data from NASA’s James Webb Space Telescope to understand the relationship between these features, as well as other influences in the chaotic galaxy center.NASA, ESA, CSA, STScI, Samuel Crowe (UVA)Around 25,000 light-years from Earth, the galactic center is close enough to study individual stars with the Webb telescope, allowing astronomers to gather unprecedented information on how stars form, and how this process may depend on the cosmic environment, especially compared to other regions of the galaxy. For example, are more massive stars formed in the center of the Milky Way, as opposed to the edges of its spiral arms?
“The image from Webb is stunning, and the science we will get from it is even better,” Crowe said. “Massive stars are factories that produce heavy elements in their nuclear cores, so understanding them better is like learning the origin story of much of the universe.”
The James Webb Space Telescope is the world’s premier space science observatory. Webb is solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and the Canadian Space Agency.
Media ContactsLaura Betz – laura.e.betz@nasa.gov, Rob Gutro– rob.gutro@nasa.gov
NASA’s Goddard Space Flight Center, , Greenbelt, Md.
Leah Ramsay lramsay@stsci.edu , Christine Pulliam cpulliam@stsci.edu
Space Telescope Science Institute, Baltimore, Md.
DownloadsDownload full resolution images for this article from the Space Telescope Science Institute.
Related InformationPiercing the Dark Birthplaces of Massive Stars with Webb
Webb Mission – https://science.nasa.gov/mission/webb/
Webb News – https://science.nasa.gov/mission/webb/latestnews/
Webb Images – https://science.nasa.gov/mission/webb/multimedia/images/
Related For Kids En Español Keep Exploring Related Topics James Webb Space Telescope Stars Galaxies Galaxies Share Details Last Updated Nov 20, 2023 Editor Steve Sabia Contact Related TermsA star-forming region, named Sagittarius C (Sgr C), is seen in exceptional detail in this image from Nov. 20, 2023, thanks to the Near-Infrared Camera instrument on NASA’s James Webb Space Telescope. An estimated 500,000 stars shine in this image of the Sgr C region, along with some never-before-seen features astronomers have yet to explain.
Image Credit: NASA, ESA, CSA, STScI, and S. Crowe (University of Virginia)
The Atacama Large Millimeter/submillimeter Array (ALMA), in which ESO is a partner, has achieved the highest resolution observations since it began operations. During a technical test, a team of experts from the Joint ALMA Observatory (JAO) in Chile, the National Astronomical Observatory of Japan (NAOJ), National Radio Astronomy Observatory (NRAO) in the USA, and ESO, imaged an evolved star with a resolution of 5 milliarcseconds. This shows ALMA can be used by astronomers to observe objects in detail equivalent to seeing a 10-metre-long bus on the Moon.
ALMA consists of 66 antennas which can be arranged in different positions across the high-altitude Chajnantor plateau in Chile. Each is equipped with receivers that allow it to observe radio waves in different frequency ranges, or bands. ALMA’s resolution increases both as the maximum separation between antennas increases and as the frequency of the observations increases. The new images were obtained with the most extended configuration possible for the ALMA array, with a maximum separation between its antennas of 16 km. They were made using the Band 10 receivers, which allow ALMA to observe at frequencies as high as 950 GHz, the highest possible for the array.
Since the observations push ALMA’s capabilities to the extreme, they were incredibly challenging to conduct. While Band 10 receivers have been available at ALMA since 2014, astronomers had to wait for the validation of a novel calibration technique, called band-to-band, to be able to conduct the new observations. They did so during a technical test in 2021 when they observed an evolved Milky Way star, R Leporis, using a bright galactic core as a calibrator, which, while distant, appears nearby R Leporis in the sky. The results are published today in the Astrophysical Journal.
This result has been achieved with significant support from ESO staff, who were involved in the test observations, the previous experiments in the lead up to this final technical achievement, and the development of the new calibration technique.
More InformationThis result was presented in a paper titled “ALMA High-frequency Long Baseline Campaign in 2021: Highest Angular Resolution Submillimeter Wave Images for the Carbon-rich Star R Lep” to appear in the Astrophysical Journal (doi:10.3847/1538-4357/acf619).
The team is composed of Y. Asaki (JAO; NAOJ; SOKENDAI), L. Maud (ESO; Leiden University), H. Francke (JAO), H. Nagai (NAOJ), D. Petry (ESO), E. B. Fomalont (NRAO), E. Humphreys (JAO; ESO), A. M. S. Richards (University of Manchester), K. T. Wong (IRAM; Uppsala University), W. Dent (JAO), A. Hirota (JAO; NAOJ), J. M. Fernandez (Lowell Observatory), S. Takahashi (NAOJ), and A. S. Hales (JAO; NRAO).
A previous technical study, leading to the 2021 Campaign can be found in: “ALMA High-frequency Long-baseline Campaign in 2019: Band 9 and 10 In-band and Band-to-band Observations Using ALMA's Longest Baselines”, published in the Astrophysical Journal in August 2023 (doi: 10.3847/1538-4365/acd6f1).
ALMA is a partnership of ESO (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada), NSTC and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ.
Nature, Published online: 15 November 2023; doi:10.1038/s41586-023-06648-7
Deep, high-resolution polarization observations of HL Tau at 870 µm show gaps that have polarization angles with a notable azimuthal component and a higher polarization fraction than the rings.Nature, Published online: 15 November 2023; doi:10.1038/s41586-023-06673-6
Observations of optical flares from AT2022tsd (the ‘Tasmanian Devil’) show that they have durations on the timescale of minutes, occur over a period of months, are highly energetic, are probably nonthermal and have supernova luminosities.Nature, Published online: 15 November 2023; doi:10.1038/d41586-023-03569-3
Scientists still can’t explain what is causing unusually bright explosions in space — but a surprising observation might offer clues.