Press Releases: Cerro Tololo Inter-American Observatory

14 Enero 2021: The Dark Energy Survey has released a massive, public collection of astronomical data and calibrated images from six years of work. Containing data on nearly 700 million astronomical objects, this second data release in the Survey’s seven-year history is the topic of sessions today and tomorrow at the 237th meeting of the American Astronomical Society.

13 Enero 2021: Astronomers have curated the most complete list of nearby brown dwarfs to date thanks to discoveries made by thousands of volunteers participating in the Backyard Worlds citizen science project. The list and 3D map of 525 brown dwarfs — including 38 reported for the first time — incorporate observations from a host of astronomical instruments including several NOIRLab facilities. The results confirm that the Sun’s neighborhood appears surprisingly diverse relative to other parts of the Milky Way Galaxy.

13 Enero 2021: Data from the DESI (Dark Energy Spectroscopic Instrument) Legacy Imaging Surveys have revealed over 1200 new gravitational lenses, approximately doubling the number of known lenses. Discovered using machine learning trained on real data, these warped and stretched images of distant galaxies provide astronomers with a flood of new targets with which to measure fundamental properties of the Universe such as the Hubble constant, which describes the expanding Universe.

13 Enero 2021: Astronomers using images from Kitt Peak National Observatory and Cerro Tololo Inter-American Observatory have created the largest ever map of the sky, comprising over a billion galaxies. The ninth and final data release from the ambitious DESI Legacy Imaging Surveys sets the stage for a ground-breaking 5-year survey with the Dark Energy Spectroscopic Instrument (DESI), which aims to provide new insights into the nature of dark energy. The map was released today at the January 2021 meeting of the American Astronomical Society.

12 Enero 2021: The most distant quasar known has been discovered. The quasar, observed just 670 million years after the Big Bang, is 1000 times more luminous than the Milky Way. It is powered by the earliest known supermassive black hole, which weighs in at more than 1.6 billion times the mass of the Sun. Seen more than 13 billion years ago, this fully formed distant quasar is also the earliest yet discovered, providing astronomers with insight into the formation of massive galaxies in the early Universe. The result was released today at the January 2021 meeting of the American Astronomical Society.

1 Diciembre 2020: Images from the Survey of the MAgellanic Stellar History (SMASH) reveal a striking family portrait of our galactic neighbors — the Large and Small Magellanic Clouds. The images represent a portion of the second data release from the deepest, most extensive survey of the Magellanic Clouds. The observations consist of roughly 4 billion measurements of 360 million objects.

27 Octubre 2020: For the first time, over 250 million stars in our galaxy’s bulge have been surveyed in near-ultraviolet, optical, and near-infrared light, opening the door for astronomers to reexamine key questions about the Milky Way’s formation and history. Using ultraviolet data, and with 450,000 individual images, the team was able to measure the chemical composition of tens of thousands of stars spanning a large area of the bulge. The vast dataset can be explored in spectacular detail in this image.

12 Octubre 2020: NOIRLab is pleased to announce that limited science operations are being re-established at Kitt Peak National Observatory in Arizona and at the Cerro Tololo Inter-American Observatory, Gemini South, and SOAR facilities in Chile after suspension on 18 March 2020 due to the COVID-19 pandemic.

22 Septiembre 2020: Big Astronomy or Astronomia a Gran Escala is a bilingual planetarium show that extends beyond the dome using web-based and hands-on resources. In Big Astronomy, discover Chile’s grand observatories and meet the people who push the limits of technology and expand what we know about the Universe using world-class telescopes.

25 Agosto 2020: A report by experts representing the global astronomical community, concludes that large constellations of bright satellites in low Earth orbit will fundamentally change ground-based optical and infrared astronomy and could impact the appearance of the night sky for stargazers worldwide. The report is the outcome of the recent SATCON1 virtual workshop, which brought together more than 250 scientists, engineers, satellite operators, and other stakeholders.

18 Agosto 2020: How complete is our census of the Sun’s closest neighbors? Astronomers using NSF NOIRLab facilities and a team of data-sleuthing volunteers participating in Backyard Worlds: Planet 9, a citizen science project, have discovered roughly 100 cool worlds near the Sun — objects more massive than planets but lighter than stars, known as brown dwarfs. Several of these newly discovered worlds are among the very coolest known, with a few approaching the temperature of Earth — cool enough to harbor water clouds.

5 Agosto 2020: Astronomers using several telescopes at NOIRLab, including the Southern Astrophysical Research (SOAR) Telescope, have obtained critical data on a particular type of exploding star that produces copious amounts of calcium. The calcium produced in this unique type of supernova explosion is the same calcium found in our bones and teeth and these events account for up to half of the calcium found in the Universe.

25 Junio 2020: Astronomers have discovered the second most distant quasar ever found, using the international Gemini Observatory and Cerro Tololo Inter-American Observatory (CTIO), Programs of NSF NOIRLab. It is also the first quasar to receive an indigenous Hawaiian name, Pōniuāʻena. The quasar contains a monster black hole, twice the mass of the black hole in the only other quasar found at the same epoch, challenging the current theories of supermassive black hole formation and growth in the early Universe.

4 Junio 2020: Using the Dark Energy Camera at Cerro Tololo Inter-American Observatory, a Program of NSF NOIRLab, astronomers are measuring weak gravitational lensing to map the distribution of mass in nearby galaxy clusters. As well as producing remarkable images like this one, the information will shed light on the relationships between the constituent parts of nearby galaxy clusters, such as gas, stellar populations, and dark matter.

16 Abril 2020: Barnard’s Galaxy, a dwarf galaxy neighboring the Milky Way, is revealed in this stunning image from the Victor. M. Blanco 4-m telescope at the Cerro Tololo Inter-American Observatory, a program of NSF NOIRLab. The image reveals regions of intense star formation and a scattering of immense cosmic bubbles.

3 Abril 2020: NSF’s National Optical-Infrared Astronomy Research Laboratory, which in 2019 brought together NSF’s optical and infrared nighttime astronomy under one entity, will now go by the shortened name of NSF NOIRLab (no-wah-lab), abbreviated from its longer formal name. NOIRLab is headquartered in Tucson, Arizona and operates Kitt Peak National Observatory, the international Gemini Observatory, the Community Science and Data Center, Cerro Tololo Inter-American Observatory, and the operations of the Vera C. Rubin Observatory.

11 Febrero 2020: Few sights are more romantic than a star-filled sky, but there are fewer and fewer places on Earth where we can still enjoy a truly dark, star-filled sky. Light pollution means we risk losing one of the most romantic spectacles in nature, so this Valentine’s Day astronomers are asking the public to help show their love for the stars by making light pollution observations as part of the Globe at Night program.

1 Octubre 2019: On 1 October 2019, the nighttime astronomy facilities supported by the National Science Foundation (NSF) transitioned to operating as one organization, NSF’s National Optical-Infrared Astronomy Research Laboratory. The new organization operates five scientific programs: Cerro Tololo Inter-American Observatory, the Community Science and Data Center, Kitt Peak National Observatory (all formerly known as the National Optical Astronomy Observatory); Gemini Observatory and the upcoming Large Synoptic Survey Telescope, and is managed by the Association of Universities for Research in Astronomy.

30 Septiembre 2019: Vice President of the Giant Magellan Telescope project and Astronomer at the Carnegie Institution for Science, Patrick McCarthy, has been selected as the new Director of the National Science Foundation National Optical-infrared Astronomy Research Laboratory (NOIRLab).

14 Agosto 2019: Supernovae, neutron star mergers, black holes at the center of galaxies, erupting young stars — these are all examples of objects in the night sky that change their brightness over time. In the coming years, astronomers expect to discover millions of these variable astronomical events with new sensitive telescopes like the Large Synoptic Survey Telescope (LSST). But to characterize these objects and to understand them better, they need to be observed with other, different telescopes soon after they are discovered.