Astronomy Stories
It isn’t often that our Capital Science Evening speaker hints at soon-to-be-breaking news right from the stage. Tuesday night, Pierre Cox, Director of the Atacama Large Milimiter/submillimeter Array...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Robin Dienel, SDSS-V, Sloan Digital Sky Survey
Pasadena, CA— The next generation of the Sloan Digital Sky Survey (SDSS-V), directed by Carnegie’s Juna Kollmeier, will move forward with mapping the entire sky following a $16 million grant from the...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, European Southern Observatory, ESO/M. Kornmesser
Pasadena, CA— It’s the celestial equivalent of a horror movie villain—a star that wouldn’t stay dead. An international team of astronomers including Carnegie’s Nick Konidaris and Benjamin Shappee...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Giant Magellan Telescope Organization, GMTO
Pasadena, CA—The Giant Magellan Telescope Organization (GMTO) today announced that it has initiated the casting of the fifth of seven mirrors that will form the heart of the Giant Magellan Telescope...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science,
Washington, DC— On August 17, a team of four Carnegie astronomers provided the first-ever glimpse of two neutron stars colliding, opening the door to a new era of astronomy.   Along with colleagues...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Benjamin Shappee, ASAS-SN
Pasadena, CA— In 2015, a star called KIC 8462852 caused quite a stir in and beyond the astronomy community due to a series of rapid, unexplained dimming events seen while it was being monitored by...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Zhen-Ya Zheng (SHAO) & Wei-Da Hu (USTC).
Washington, DC— New work from a research team including the director of Carnegie’s Las Campanas Observatory, Leopoldo Infante, has tripled the sample size of known galaxies that can teach scientists...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, ASAS-SN
Pasadena, CA— Carnegie’s Benjamin Shappee is part of a team of scientists, including an Australian amateur astronomer, which discovered a new comet last week. Called the All Sky Automated Survey for...
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The Giant Magellan Telescope will be one member of the next class of super giant earth-based telescopes that promises to revolutionize our view and understanding of the universe. It will be constructed in the Las Campanas Observatory in Chile. Commissioning of the telescope is scheduled to begin in...
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The recent discovery that the universe is expanding at an accelerating rate has profoundly affected physics. If the universe were gravity-dominated then it should be decelerating. These contrary results suggest a new form of “dark energy”—some kind of repulsive force—is driving the universe. To get...
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The Carnegie Irvine Galaxy Survey is obtaining high-quality optical and near-infrared images of several hundred of the brightest galaxies in the southern hemisphere sky, at Carnegie’s Las Campanas Observatory to investigate the structural properties of galaxies. For more see    http://cgs.obs....
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 Barry Madore is widely known for his work on Cepheid variables—very bright pulsating stars used to determine distances in the universe—plus his research on peculiar galaxies, and the extragalactic distance scale. He divides his time between directing science for NED, the NASA/IPAC Extragalactic...
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Staff member emeritus François Schweizer studies galaxy assembly and evolution by observing nearby galaxies, particularly how collisions and mergers affect their properties. His research has added to the awareness that these events are dominant processes in shaping galaxies and determining their...
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Guillermo Blanc wants to understand the processes by which galaxies form and evolve over the course of the history of the universe. He studies local galaxies in the “present day” universe as well as very distant and therefore older galaxies to observe the early epochs of galaxy evolution. Blanc...
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The Giant Magellan Telescope Organization (GMTO) announced that it has initiated the casting of the fifth of seven mirrors that will form the heart of the Giant Magellan Telescope (GMT). The mirror...
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Former Carnegie fellow and current trustee, astronomer Sandra Faber, has been awarded the 2017 Gruber Foundation Cosmology Prize. She was awarded the lifetime achievement award for “her...
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Leading scientists, senior officials, and supporters from an international consortium of universities and research institutions are gathering on a remote mountaintop high in the Chilean Andes today...
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Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Robin Dienel, SDSS-V, Sloan Digital Sky Survey
November 16, 2017

Pasadena, CA— The next generation of the Sloan Digital Sky Survey (SDSS-V), directed by Carnegie’s Juna Kollmeier, will move forward with mapping the entire sky following a $16 million grant from the Alfred P. Sloan Foundation. The grant will kickstart a groundbreaking all-sky spectroscopic survey for a next wave of discovery, anticipated to start in 2020.

The Sloan Digital Sky Survey has been one of the most-successful and influential surveys in the history of astronomy, creating the most-detailed three-dimensional maps of the universe ever made, with deep multi-color images of one third of the sky, and spectra for more than three million astronomical objects.

“For more

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, European Southern Observatory, ESO/M. Kornmesser
November 8, 2017

Pasadena, CA— It’s the celestial equivalent of a horror movie villain—a star that wouldn’t stay dead.

An international team of astronomers including Carnegie’s Nick Konidaris and Benjamin Shappee discovered a star that exploded multiple times over a period of 50 years. The finding, published by Nature, completely confounds existing knowledge of a star’s end of life, and Konidaris’ instrument-construction played a crucial role in analyzing the phenomenon.  

In September 2014, the intermediate Palomar Transient Factory team of astronomers detected a new explosion in the sky, iPTF14hls.

The light given off by the event was analyzed in order to understand the speed and

Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Giant Magellan Telescope Organization, GMTO
November 3, 2017

Pasadena, CA—The Giant Magellan Telescope Organization (GMTO) today announced that it has initiated the casting of the fifth of seven mirrors that will form the heart of the Giant Magellan Telescope (GMT). The mirror is being cast at the University of Arizona's Richard F. Caris Mirror Laboratory, the facility known for creating the world’s largest mirrors for astronomy. The 25-meter diameter GMT will be sited at Carnegie's Las Campanas Observatory in the Chilean Andes and will be used to study planets around other stars and to look back to the time when the first galaxies formed. The process of “casting” the giant mirror involves melting nearly 20 tons of glass in a spinning furnace.

Carnegie Science, Carnegie Institution, Carnegie Institution for Science,
October 14, 2017

Washington, DC— On August 17, a team of four Carnegie astronomers provided the first-ever glimpse of two neutron stars colliding, opening the door to a new era of astronomy.  

Along with colleagues at UC Santa Cruz, the team used the Swope telescope at Las Campanas Observatory to discover the light produced by the merger, pinpointing the origin of a gravitational wave signal less than 11 hours after it was detected.  They also obtained the earliest spectra of the collision, which may allow them to explain how many of the universe’s heavy elements were created—a decades old question for astrophysicists.

Their discovery, named Swope Supernova Survey 2017a (or SSS17a), is

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The fund supports a postdoctoral fellowship in astronomy that rotates between the Carnegie Science departments of Terrestrial Magnetism in Washington, D.C., and the Observatories in Pasadena California. 

The Carnegie-Spitzer-IMACS (CSI) survey, currently underway at the Magellan-Baade 6.5m telescope in Chile, has been specifically designed to characterize normal galaxies and their environments at a distance of about 4 billion years post Big Bang, expresses by astronomers as  z=1.5.

The survey selection is done using the Spitzer Space Telescope Legacy fields, which provides as close a selection by stellar mass as possible.

Using the IMACS infrared camera, the survey goal is to study galaxies down to low light magnitudes. The goal is to reduce the variance in the density of massive galaxies at these distances and times to accurately trace the evolution of the galaxy mass

The Earthbound Planet Search Program has discovered hundreds of planets orbiting nearby stars using telescopes at Lick Observatory, Keck Observatory, the Anglo-Australian Observatory, Carnegie's Las Campanas Observatory, and the ESO Paranal Observatory.  Our multi-national team has been collecting data for 30 years, using the Precision Doppler technique.  Highlights of this program include the detection of five of the first six exoplanets, the first eccentric planet, the first multiple planet system, the first sub-Saturn mass planet, the first sub-Neptune mass planet, the first terrestrial mass planet, and the first transit planet.Over the course of 30 years we have improved the

The Carnegie Irvine Galaxy Survey is obtaining high-quality optical and near-infrared images of several hundred of the brightest galaxies in the southern hemisphere sky, at Carnegie’s Las Campanas Observatory to investigate the structural properties of galaxies. For more see    http://cgs.obs.carnegiescience.edu/CGS/Home.html

Distant galaxies offer a glimpse of the universe as it was billions of years ago. Understanding how the Milky Way and other galaxies originated provides a unique perspective on the fundamental physics of cosmology, the invisible dark matter, and  repulsive force of dark energy. Patrick McCarthy uses the facilities at Carnegie’s Las Campanas Observatory to explore the early formation and evolution of galaxies. He is also director of the Giant Magellan Telescope Organization, an international consortium that is building the next generation giant telescope.  

Galaxy formation is driven by the interplay between the large-scale distribution of dark matter—that non-luminous unidentified

Alycia Weinberger wants to understand how planets form, so she observes young stars in our galaxy and their disks, from which planets are born. She also looks for and studies planetary systems.

Studying disks surrounding nearby stars help us determine the necessary conditions for planet formation. Young disks contain the raw materials for building planets and the ultimate architecture of planetary systems depends on how these raw materials are distributed, what the balance of different elements and ices is within the gas and dust, and how fast the disks dissipate.

Weinberger uses a variety of observational techniques and facilities, particularly ultra-high spatial-

Juna Kollmeier’s research is an unusual combination—she is as observationally-oriented theorist making predictions that can be compared to current and future observations. Her primary focus is on the emergence of structure in the universe. She combines cosmological hydrodynamic simulations and analytic theory to figure out how the tiny fluctuations in density that were present when the universe was only 300 thousand years old, become the galaxies and black holes that we see now, after 14 billion years of cosmic evolution. 

 She has a three-pronged approach to unravelling the mysteries of the universe. On the largest scales, she studies the intergalactic medium (IGM)—the tenuous

Anthony Piro is the George Ellery Hale Distinguished Scholar in Theoretical Astrophysics at the Carnegie Observatories. He is a theoretical astrophysicist studying compact objects, astrophysical explosions, accretion flows, and stellar dynamics. His expertise is in nuclear physics, thermodynamics, condensed matter physics, General Relativity, and fluid and magneto-hydrodanmics. He uses this background  to predict new observational phenomena as well as to understand the key underlying physical mechanisms responsible for current observations. He uses a combination of analytic and simple numerical models to build physical intuition for complex phenomena.

Piro recieved his  BS and Ph