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TheDESurvey @TheDESurvey

Dark Energy Survey @TheDESurvey

RT @NOIRLabAstro:Wow! Check out from left to right the 0.9 meter Curtis Schmidt Telescope, Víctor M. Blanco 4-meter Telescope and th… https://t.co/WhTEwEuN61

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Dark Energy Survey @TheDESurvey

RT @NOIRLabAstro:Happy #PrideMonth! Here at @NOIRLabAstro, we are committed to fostering a diverse and inclusive community for our L… https://t.co/H3UQTfJoom

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Dark Energy Survey @TheDESurvey

RT @annamporredon:After almost 2 years, we finally finished the combined DES+KiDS cosmic shear analysis! @theDESurvey @ESO… https://t.co/h9Fy1ugNtB

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Dark Energy Survey @TheDESurvey

RT @NOIRLabAstro:Radiant Protostars and Shadowy Clouds Clash in Stellar Nursery! Captured with the @ENERGY-fabricated Dark Energy Ca… https://t.co/oEVFOFUEkd

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Dark Energy Survey @TheDESurvey

RT @NOIRLabAstro:Check out this view of NGC 1808, a barred spiral galaxy located in the constellation Columba. This image was captur… https://t.co/MFljK3p7Mb

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The Dark Energy Survey

3 days ago

Wow! Check out from left to right the 0.9 meter Curtis Schmidt Telescope, Víctor M. Blanco 4-meter Telescope and the SMARTS 1.5 and 0.9-meter telescopes at Cerro Tololo Inter-American Observatory (CTIO) in Chile for some spectacular Southern star trails. A night to remember!

🤩 #stargazing #astronomy #cerrotololo #summitdreams #StarryNight #telescope #science #startrails
Credit: CTIO/NOIRLab/NSF/AURA/ D. Munizaga ... See MoreSee Less

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The Dark Energy Survey

4 days ago

Happy #PrideMonth! Here at National Science Foundation (NSF)’s NOIRLab, we are committed to fostering a diverse, inclusive, and respectful community for our LGBTQIA+ colleagues, friends, and family members. The range of identities we #pride ourselves in are as expansive as the Universe itself, and we welcome them all! At all of our facilities in Arizona, Hawai‘i, and Chile, we will be handing out specially-made buttons that promote a welcoming environment for all our staff as we continue to advance #astronomy. 🏳️‍🌈

How will you be celebrating #Pride2023? ... See MoreSee Less

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The Dark Energy Survey

3 weeks ago

What a view! ✨The massive, star-forming interstellar cloud Lupus 3 is captured with the 570-megapixel U.S. Department of Energy-fabricated Dark Energy Camera at NOIRLab’s Cerro Tololo Inter-American Observatory (CTIO) in Chile. The dazzling central region of this sprawling cloud reveals a pair of infant stars bursting from their natal cocoons of dust and gas to illuminate the reflection nebula known as Bernes 149. These contrasting regions make this object a prime target of research on star formation.

Read more:
noirlab.edu/public/news/noirlab2313/

#astronomy #science #universe #cosmo #lupus3 #insterstellar #DECam #cerrotololo #stars #nebula

Credit: CTIO/NOIRLab/DOE/NSF/AURA/ T.A. Rector (University of Alaska Anchorage/NSF’s NOIRLab)
Image Processing: D. de Martin & M. Zamani (NSF’s NOIRLab) ... See MoreSee Less

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The Dark Energy Survey

3 weeks ago

Check out this view of NGC 1808, a barred spiral galaxy located in the southern constellation Columba (the dove). This image was captured using the Dark Energy Camera which is mounted on the Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory (CTIO) Tololo, a Program of National Science Foundation (NSF)’s NOIRLab in Chile.

The core of NGC 1808 is thought to house a supermassive black hole, characterized by its accretion of material and higher-than-normal brightness. The smoldering center is closely surrounded by a faint blue ring populated with star clusters and supernova remnants. This region is defined by its starburst activity, producing an exceptional number of hot, bright, young stars. The abundance of rapid star formation is thought to be the result of past tidal interactions with the nearby galaxy NGC 1792. Laced throughout this middle region of NGC 1808 are dark dust lanes resulting from large outflows of hydrogen gas from the galactic nucleus. The softly glowing outer arms surrounding the galaxy are slightly warped, again pointing to tidal interactions with NGC 1792. Such an interaction could have created the asymmetrical shape of NGC 1808 and hurled gas towards the nucleus, igniting the rapid star formation in its surrounding ring.

www.noirlab.edu/public/images/iotw2320a/

Credit: Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA
Image processing: R. Colombari and M. Zamani (NSF’s NOIRLab)

#astronomy #science #galaxy #Columba #NOIRLab #telescope #cerrotololo ... See MoreSee Less

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how long did this image take to collect ?

The Dark Energy Survey

3 weeks ago

Timeline photosStanding tall on the horizon, the Cerro Tololo Inter-American Observatory (CTIO) complex in Chile is an astronomy icon that provides a platform for access to the southern hemisphere for worldwide scientific research! Check out this amazing view of some of the more than 40 telescopes there ✨

noirlab.edu/public/es/images/Cerro-Tololo-Drone-Pano_4-CC/

Credit:CTIO/NOIRLab/NSF/AURA/T. Matsopoulos
#astronomy #cerrotololo #science #telescope #mountain #view ... See MoreSee Less

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News

Scientists Leverage HPC and AI to Wrangle the ‘Galaxy Zoo’

July 8, 2019 12:00 pm

The research team developed a new approach to classifying these hundreds of millions of galaxies. Instead of relying on crowdsourced classification, the researchers used knowledge from the state-of-the-art Xception neural network, combined with the datasets generated by the Galaxy Zoo project, to train its deep learning models. They then applied the trained model to galactic images from the Dark Energy Survey (DES) – where it achieved a 99.6% accuracy in identifying spiral and elliptical galaxies.

Three sky surveys completed in preparation for Dark Energy Spectroscopic Instrument

July 8, 2019 12:00 pm

It took three sky surveys — conducted at telescopes in two continents, covering one-third of the visible sky, and requiring almost 1,000 observing nights – to prepare for a new project that will create the largest 3-D map of the universe’s galaxies and glean new insights about the universe’s accelerating expansion. This Dark Energy Spectroscopic Instrument (DESI) project will explore this expansion, driven by a mysterious property known as dark energy, in great detail. It could also make unexpected discoveries during its five-year mission.

Multiple Measurements close in on Dark Energy

May 6, 2019 12:00 pm

An extensive analysis of four different phenomena within the universe points the way to understanding the nature of dark energy, a collaboration between more than 100 scientists reveals. Dark energy – the force that propels the acceleration of the expanding universe – is a mysterious thing. It’s nature, write telescope scientist Timothy Abbott from the Cerro Tololo Inter-American Observatory, in Chile, and colleagues, “is unknown, and understanding its properties and origin is one of the principal challenges in modern physics”. Indeed, there is a lot at stake. Current measurements indicate that dark energy can be smoothly incorporated into the theory of general relativity as a cosmological constant; but, the researchers note, those measurements are far from precise and incorporate a wide range of potential variations.

Viewpoint: Dark Energy Faces Multiple Probes

May 1, 2019 12:00 pm

One of the top goals in cosmology today is understanding the dark energy that is responsible for the accelerated expansion of the Universe. Is the dark energy consistent with the cosmological constant of general relativity—representing a constant energy density filling space homogenously? Or can we find deviations from general relativity on cosmological scales that suggest a more complex nature for gravity? Questions like these motivate the current and next generations of surveys that aim to map out ever larger volumes of the Universe, using a wide variety of probes to constrain the properties of dark energy. The Dark Energy Survey (DES) has now derived such constraints from the combined analysis of four canonical observables related to dark energy: supernovae, baryon acoustic oscillations, gravitational lensing, and galaxy clustering [1]. The resulting bounds confirm what we knew from previous studies, which focused on single probes. But the results indicate that this multiprobe approach could allow surveys in the 2020s to improve such constraints by orders of magnitude, possibly bringing us close to solving the dark energy puzzle.

Supernovae, Dark Energy, and the Fate of Our Universe

April 5, 2019 12:00 pm

What’s the eventual fate of our universe? Is spacetime destined to continue to expand forever? Will it fly apart, tearing even atoms into bits? Or will it crunch back in on itself? New results from Dark Energy Survey supernovae address these and other questions. At present, the fabric of our universe is expanding — and not only that, but the its expansion is accelerating. To explain this phenomenon, we invoke what’s known as dark energy — an unknown form of energy that exists everywhere and exerts a negative pressure, driving the expansion. Since this idea was first proposed, we’ve conducted decades of research to better understand what dark energy is, how much of it there is, and how it influences our universe.

© 2023 The Dark Energy Survey