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...
Explore this Story
  Washington, DC—Un grupo de astrónomos del Observatorio Las Campanas, de Carnegie, incluyendo a Mark Phillips y Guillermo Blanc, junto a Miguel Roth de la Organización Telescopio Magallanes Gigante...
Explore this Story
Washington, DC—A group of astronomers from Carnegie’s Las Campanas Observatory including Mark Phillips and Guillermo Blanc, along with Miguel Roth from the Giant Magellan Telescope Organization,...
Explore this Story
Kit Whitten in the plate analysis room. Photo by Cynthia Hunt
Cataloging Reflections by Kit Whitten, Carnegie Observatories Library Intern It is commonly believed that when looking for valuable treasure, the best place to look is the attic—after all, works by...
Explore this Story
Former Carnegie fellow and current trustee Sandy Faber has been selected to receive the 2018 American Philosophical Society’s Magellanic Premium Medal.  The medal is the nation’s oldest for...
Explore this Story
Pasadena, CA—Pomona College junior and returning Carnegie Observatories intern Sal Fu was awarded...
Explore this Story
Carnegie Science, Carnegie Institution, Carnegie Institution for Science, Las Campanas Observatory
La Serena, Chile—Last week, scientists and staff from Carnegie’s Las Campanas Observatory volunteered for Astroday 2018 at a 170-year-old school in the nearby city of Las Serena, the Colegio...
Explore this Story
Called the Hubble Ultra Deep Field, this galaxy-studded view represents a "deep" core sample of the universe, cutting across billions of light-years. Courtesy: NASA, ESA, and S. Beckwith (STScI) and the HUDF Team
In the days after the death of Stephen Hawking, some of our scientists reflected on meeting him, on his contributions to science and science communication, and his impact on humanity.  ALAN BOSS,...
Explore this Story

Pages

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...
Explore this Project
Along with Alycia Weinberger and Ian Thompson, Alan Boss has been running the Carnegie Astrometric Planet Search (CAPS) program, which searches for extrasolar planets by the astrometric method, where the planet's presence is detected indirectly through the wobble of the host star around the center...
Explore this Project
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...
Explore this Project
Director Emeritus, George Preston has been deciphering the chemical evolution of stars in our Milky Way for a quarter of a century. He and Steve Shectman started this quest using a special technique to conduct a needle-in-the-haystack search for the few, first-generation stars, whose chemical...
Meet this Scientist
The entire universe—galaxies, stars, and planets—originally condensed from a vast network of tenuous, gaseous filaments, known as the intergalactic medium, or the gaseous cosmic web. Most of the matter in this giant reservoir has never been incorporated into galaxies; it keeps floating about in...
Meet this Scientist
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...
Meet this Scientist
You May Also Like...
Take a tour with Cynthia Hunt through eight foundational images from the Carnegie Observatories' plate collection in Nautilus magazine. More
Explore this Story
Pasadena, CA— Blazars are the brightest of active galactic nuclei, and many emit very high-energy gamma rays. New observations of a blazar known as PKS 1424+240 show that it is the most-distant known...
Explore this Story
This image show the location of areas affected by the Chilean earthquake this week. Carnegies Las Campanas Observatory is located at the black star abut 300 mile north of Santiago.
Explore this Story

Explore Carnegie Science

May 28, 2018

 

Washington, DC—Un grupo de astrónomos del Observatorio Las Campanas, de Carnegie, incluyendo a Mark Phillips y Guillermo Blanc, junto a Miguel Roth de la Organización Telescopio Magallanes Gigante, abogaron en contra de la contaminación lumínica en una reunión que se realizó la semana pasada y que contó con la presencia de diversas autoridades chilenas.

Combatir la contaminación lumínica no se trata de no iluminar, sino de iluminar bien, explicó Blanc. Él fue el encargado de presentar los efectos que produce la luz de las ciudades, carreteras e instalaciones mineras, en las cercanías de algunos de los mayores observatorios astronómicos instalados en el país.

Una de

May 25, 2018

Washington, DC—A group of astronomers from Carnegie’s Las Campanas Observatory including Mark Phillips and Guillermo Blanc, along with Miguel Roth from the Giant Magellan Telescope Organization, presented the case against light pollution to Chilean authorities earlier this month.

Combating light pollution is not about demanding complete darkness, it is about illuminating human spaces well, Blanc explained. He reported on the effects of light from cities, highways, and mines near the nation’s biggest astronomical observatories.

Of particular concern for the researchers and technical staff at Las Campanas and nearby La Silla is the Algarrobo highway. Blanc suggested downward-

Kit Whitten in the plate analysis room. Photo by Cynthia Hunt
May 3, 2018

Cataloging Reflections by Kit Whitten, Carnegie Observatories Library Intern

It is commonly believed that when looking for valuable treasure, the best place to look is the attic—after all, works by Caravaggio, Van Gogh, Rembrandt, and Jackson Pollack have been discovered in attics—but not everyone thinks to look in the basement. Yet institutions like Carnegie Observatories often keep the best stuff in the basement.

The underground vault at the Observatories houses the nation’s second-largest, single-institution collection of astronomical glass plates, which are thin sheets of glass with an emulsion image of celestial bodies.  Photographic plates preceded plastic

April 27, 2018

Former Carnegie fellow and current trustee Sandy Faber has been selected to receive the 2018 American Philosophical Society’s Magellanic Premium Medal.  The medal is the nation’s oldest for scientific achievement. It was established in 1786. It is awarded from time to time “ to the author of the best discovery or most useful invention related to navigation, astronomy, or natural philosophy…”

Dr. Faber is the University of California, Santa Cruz, University Professor of Astronomy and Astrophysics and has been a Carnegie trustee since 1985.  After receiving a B.A. in physics from Swarthmore College, she pursued her Ph.D. in astronomy at Harvard, which she received in 1972. Much of

No content in this section.

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

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 Hubble program is an ongoing comprehensive effort that has a goal of determining the Hubble constant, the expansion rate of the universe,  to a systematic accuracy of 2%. As part of this program, astronomers are obtaining data at the 3.6 micron wavelength using the Infrared Array Camera (IRAC) on Spitzer Space Telescope. The team has demonstrated that the mid-infrared period-luminosity relation for Cepheids, variable stars used to determine distances and the rate of the expansion,  at 3.6 microns is the most accurate means of measuring Cepheid distances to date. At 3.6 microns, it is possible to minimize the known remaining systematic uncertainties in the Cepheid

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

Some 40 thousand tons of extraterrestrial material fall on Earth every year. This cosmic debris provides cosmochemist Conel Alexander with information about the formation of the Solar System, our galaxy, and perhaps the origin of life.

Alexander studies meteorites to determine what went on before and during the formation of our Solar System. Meteorites are fragments of asteroids—small bodies that originated between Mars and Jupiter—and are likely the last remnants of objects that gave rise to the terrestrial planets. He is particularly interested in the analysis of chondrules, millimeter-size spherical objects that are the dominant constituent of the most primitive types of

Globular clusters are spherical systems of some 100,000  gravitationally bound stars. They are among the oldest components of our galaxy and are key to understanding the age and scale of the universe. Previous measurements of their distances have compared the characteristics of different types of stars in the solar neighborhood with the same types of stars found in the clusters. However, these measurements have systematic errors, which limit the determination of cluster ages and distances.

 Ian Thompson has a different approach to the problem: using observations of exceedingly rare Detached Eclipsing Binary stars. These systems have two separated stars orbiting each other such

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 stellar and gaseous contents.

When nearby galaxies collide and merge they yield valuable clues about processes that occurred much more frequently in the younger, distant universe. When two gas-rich galaxies collide, their pervasive interstellar gas gets compressed, clumps into dense clouds, and fuels the sudden birth of billions of new stars and thousands of star clusters.

Some of

 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 Database, and research at Carnegie. His Carnegie work is to resolve discrepancies between observations of galaxies at different wavelengths, with what is happening during galactic evolution.

 Distant and older galaxies appear to be more ragged and disorganized than closer, younger ones. These appearances could be legitimate features, or the effects from the expansion of the universe, which