Harvard-Smithsonian Center For Astrophysics News

Astronomers Discover Super-Jupiter Exoplanet around an Evolved Star

May 26, 2015

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Astronomers Discover Kepler-432

Astronomers from the Harvard-Smithsonian Center for Astrophysics have discovered two new giant exoplanets around an evolved star. There are 565 exoplanets currently known that are as massive as Jupiter or bigger, about one third of the total known, confirmed exoplanet population. About one quarter of the massive population orbits very close to its star, with […]

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TEMPO Space-Based Pollution Monitoring Instrument Passes NASA Review

May 13, 2015

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TEMPO Pollution Monitoring Instrument Passes Critical Review

A new space-based instrument that will monitor major air pollutants across North America on an hourly basis has successfully completed a critical review by NASA. Cambridge, Massachusetts – The Tropospheric Emissions: Monitoring of Pollution (TEMPO) instrument passed a major milestone April 10, 2015 by successfully completing a critical NASA confirmation review. It has been confirmed […]

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The Changing Frequency of Galaxy Collisions

May 11, 2015

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New Theoretical Framework for Calculating the Frequency of Galaxy Mergers

New research from the Illustris project examines the changing frequency of galaxy collisions, as the universe evolves from the big bang to the present day. Our knowledge of the big bang has increased dramatically in the past decade, as satellites and ground-based studies of the cosmic microwave background have refined parameters associated with the very […]

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Astrophysicists Show Water Could Have Been Abundant in the early Universe

May 4, 2015

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Water Could Have Been Abundant in the Early Universe

New theoretical work from the Harvard-Smithsonian Center for Astrophysics reveals that water vapor could have been abundant in the early universe. Cambridge, Massachusetts – How soon after the Big Bang could water have existed? Not right away, because water molecules contain oxygen and oxygen had to be formed in the first stars. Then that oxygen […]

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Astronomers Discover Radio Phoenix Close to the Moment of Its Formation

April 28, 2015

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Abell 1033

Using data from the Chandra X-ray Observatory, the Westerbork Synthesis Radio Telescope, the Very Large Array ad the optical Sloan Digital Sky Survey, astronomers have spotted a radio source with the emission and charged particle characteristics of a radio phoenix. Abell 1033 is a cluster of over 350 galaxies located about 1.7 billion light-years away. […]

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Astronomers Reveal “Missing-Link” in the Supernova-GRB Connection

April 28, 2015

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Missing-Link in the Supernova-GRB Connection

A newly published study details the “missing link” between supernova explosions that generate gamma-ray bursts (GRBs) and those that don’t. Cambridge, Massachusetts – Astronomers using the National Science Foundation’s Very Large Array (VLA) have found a long-sought “missing link” between supernova explosions that generate gamma-ray bursts (GRBs) and those that don’t. The scientists found that […]

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Astronomers Discover 11 Runaway Elliptical Galaxies

April 24, 2015

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Astronomers Find Runaway Galaxies

Astronomers from the Harvard-Smithsonian Center for Astrophysics and Moscow State University have discovered 11 isolated compact elliptical galaxies that have been flung out of their homes to wander the void of intergalactic space. Cambridge, Massachusetts – We know of about two dozen runaway stars, and have even found one runaway star cluster escaping its galaxy […]

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Cosmologically Complicating Dust – Previously Reported Curl Signal Due to Galactic Dust

April 20, 2015

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Previously Reported Curl Signal Due to Galactic Dust

Astronomers reveal that previously reported measurements attributed to the effects of cosmic inflation are instead almost certainly due to the effects of galactic dust. The universe was created 13.7 billion years ago in a blaze of light: the big bang. Roughly 380,000 years later, after matter (mostly hydrogen) had cooled enough for neutral atoms to […]

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Spitzer and OGLE Discover a Planet Deep Within Our Galaxy

April 15, 2015

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Spitzer Finds a Planet Deep Within Our Galaxy

Using a method called microlensing, NASA’s Spitzer Space Telescope and OGLE’s Warsaw Telescope teamed up to reveal a remote gas planet that is located about 13,000 light-years away. The discovery demonstrates that Spitzer — from its unique perch in space — can be used to help solve the puzzle of how planets are distributed throughout […]

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Unusual Isotopic Abundances Discovered in Nova Vul 1670

April 10, 2015

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Eruptive Star Nova Vul 1670

A newly published study reveals that Nova Vul 1670 is not only rich in molecular species, its gas has dramatically unusual isotopic abundances (that is, the atoms present, carbon, oxygen and nitrogen in particular, have extra neutrons in their nuclei). Astronomers have known for decades that the merger of two normal stars is a frequent […]

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Astronomers Discover Complex Organic Molecules in Infant Star System

April 10, 2015

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Complex Cyanides Reveal Composition of a Protoplanetary Disk

Astronomers from the Harvard-Smithsonian Center for Astrophysics have detected the presence of complex organic molecules in a protoplanetary disk surrounding a young star, indicating that the conditions that spawned our Earth and Sun are not unique in the universe. This discovery, made with the Atacama Large Millimeter/submillimeter Array (ALMA), reveals that the protoplanetary disk surrounding […]

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Magnetic Fields Influence Star Formation on a Variety of Scales

March 30, 2015

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Magnetic Fields Influence Star Formation

A newly published study from the Harvard-Smithsonian Center for Astrophysics reveals that magnetic fields influence star formation on a variety of scales, from hundreds of light-years down to a fraction of a light-year. Cambridge, Massachusetts – Stars form when gravity pulls together material within giant clouds of gas and dust. But gravity isn’t the only […]

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Astronomers Use Globular Clusters to Measure Galaxy Evolution

March 20, 2015

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Measuring Galaxy Evolution

A new study from the Harvard-Smithsonian Center for Astrophysics reveals that globular clusters are often gathered into distinct groupings whose shapes reflect the formation of the clusters and the histories of the galaxies. Globular clusters are gravitationally bound ensembles of stars, as many as a million stars in some cases, grouped in roughly spherical clusters […]

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Cosmic Bumps on Cosmic Ripples – Analysis of Sunyaev-Zel’dovich Effect

March 13, 2015

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Researchers Use Observations from the SPT to Examine the SZE Signatures

Researchers from the Harvard-Smithsonian Center for Astrophysics used the South Pole Telescope to examine the SZE signatures of galaxy clusters, reporting an unexpectedly weak SZE signal for less massive galaxy clusters. In 1969, the astrophysicists Rashid Sunyaev and Yakov Zel’dovich realized that the then recently discovered cosmic microwave background radiation (CMBR) would be distorted by […]

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Coronal Mass Ejections Accelerate and Concentrate Nanodust Particles

March 10, 2015

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Nanodust Observations by the Solar Terrestrial Relations Observatory

A team of astronomers has discovered that coronal mass ejections accelerate and concentrate nanodust particles in the interplanetary medium, a conclusion derived from STEREO instruments that observed an increase in the rate of nanodust impacts on the spacecraft. Dust particles smaller than about a wavelength of light are abundant in our solar system, created by […]

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Astrophysicists Investigate Where Stars Form in Merging Galaxies

February 27, 2015

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The Spatial Extent of Induced Star Formation

Researchers from the Harvard-Smithsonian Center for Astrophysics simulated galaxy collisions under a wide range of conditions in order to investigate the question of where the induced star formation is located. Collisions between galaxies, and even less dramatic gravitational encounters between them, are recognized as triggering star formation. Observations of luminous galaxies, powered by starbursts, are […]

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The Formation of a Quadruple Star System

February 20, 2015

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Astronomers View the Formation of a Quadruple Star System

Astronomers have discovered a nearby stellar nursery where quadruplets are being born. More than half of all stars are in multiple systems: binary stars, or even triplets or quadruplets, that orbit one another. No one is quite sure how or why they form, but the effects can be significant, for example influencing the character of […]

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