News

Alycia Weinberger Makes her Maiden Voyage Onboard NASA's SOFIA Airborne Observatory

NASA's SOFIA

DTM Staff Scientist Alycia Weinberger made her maiden voyage on NASA’s SOFIA airborne observatory on 12 June to practice making observations with the same instrument she’ll be using on her own approved airborne observation program early next year. 

SOFIA is the “largest airborne observatory in the world and is capable of making observations that are impossible for even the largest and highest ground-based telescopes.” (NASA) It consists of an extensively modified Boeing 747SP aircraft and carries a reflecting telescope with an effective diameter of 2.5 meters. While SOFIA was in development, Weinberger served on the Science Council from 2007 to 2012 and chaired its science advisory committee from 2010-2011.  

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DTM Hosts the 5th National Capital Area Disks (NCAD) Meeting

NCAD5

This past week, DTM hosted the 5th National Capital Area Disks (NCAD) annual meeting on campus where researches from Washington D.C. and the surrounding area came together to investigate topics related to the origins and formation of planets and exoplanets in a semi-informal, collaborative mini conference.  The goal of this meeting, as in previous years, is to bring together experts in the fields of circumstellar disks, exoplanets, and solar system bodies to discuss their work in an open environment. 

Although the main focus of the conference is on circumstellar disks located around young stars of forming planets, the conference also welcomed presentations on planets, exoplanets, meteorites, comets, asteroids, and a variety of other topics that may shed light on the origins of planetary systems.

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Job Opening: Geophysics Staff Scientist

DTM JOBS

The Department of Terrestrial Magnetism (DTM) of the Carnegie Institution of Washington seeks a staff scientist in the broad field of geophysics who will investigate solid-Earth processes at the planetary scale. Areas of expertise and research emphases might include (but are not limited to) the thermal history, convection, differentiation, and tectonics of Earth and other terrestrial planets, connections between planetary formation processes and past and present geological and seismological structure of the Earth. This person should complement existing research programs in the Department. Applicants who integrate across traditional boundaries, especially between models and observations, and geophysics, geochemistry, and planetary sciences, are particularly encouraged to apply.

The Carnegie Institution is a basic research organization with a history of innovative instrumentation development. DTM staff scientists hold long-term appointments and pursue independent research supported by a combination of endowment and federal funds. DTM staff scientists do not have teaching duties, but we place considerable emphasis on mentoring postdoctoral scholars.

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Vera Rubin's Influential Work on Dark Matter is Highlighted in Cosmos: A Spacetime Odyssey

Vera Rubin Cosmos

Co-Cosmos-creator circa 1980, Ann Druyan, and astrophysicist Neil deGrasse Tyson, teamed up with animator Seth MacFarlane in 2009 to create an updated version of the 1980 series Cosmos: A Personal Voyage, entitled, Cosmos: A Spacetime OdysseyAfter 12 riveting episodes that dissected the vast world of space exploration in its 2014 series revival, Tyson ended the season with an episode entitled "Unafraid of the Dark."

Tyson highlights this strive for discovery in various scientific achievements throughout history, including DTM staff member emeritus Vera Rubin's acclaimed work with Kent Ford on dark matter. After Fritz Zwicky postulated the existence of an unknown mass in observable galaxies, or dark matter, in the universe in 1933, Rubin was able to provide proof of his theory in the 1970s by observing the rotation of stars at the edge of these observable galaxies and calculating that they did not follow the expected rotational behavior without considering the existence of Zwicky's dark matter.  

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Two Planets Orbit Nearby Ancient Star

Two Planets Orbit Nearby Ancient Star

An international team of astronomers, including five Carnegie scientists, reports the discovery of two new planets orbiting a very old star that is near to our own Sun. One of these planets orbits the star at the right distance to allow liquid water to exist on its surface, a key ingredient to support life. Their work is published by Monthly Notices of the Royal Astronomical Society and available online here.

The astronomers—including DTM's Pamela Arriagada and Paul Butler along with Carnegie's Steve Shectman, Jeff Crane, and Ian Thompson—used new data from the HARPS spectrometer at the European Southern Observatory's La Silla observatory, the Planet Finding Spectrometer at the Magellan/Las Campanas Observatory in Chile, and the HIRES spectrometer at the W.M. Keck Observatory in Hawaii to measure tiny periodic changes in the motion of the star. The Doppler Effect enabled the scientists to deduce some properties of these planets, including their masses and orbital periods.

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Roman Reveals the Underlying Activity of Volcanoes at Carnegie's Neighborhood Lecture Series Last Night

Roman

Last night friends, neighbors, and fellow scientists of Carnegie gathered at our Broad Branch Road Campus to hear a riveting talk on the "The Secret Life of 'Quiescent' Volcanoes" held by DTM Staff Scientist Diana Roman at our final 2013-2014 installment of the Neighborhood Lecture Series.

Although eruptions are the most recognizeable volcanic activity, they represent only a small fraction of what is actually occuring beneath the surface. Roman divulged on the other geological activity that occurs at Earth's volcanoes and displayed the seismic instruments she uses to measure this activity on the volcanoes her and her team work on. The talk began with a history lesson on Pompeii, the ancient-roman city that was burried under 20 feet of ash and pumice following the 79 AD eruption of Mount Vesuvius. By reviewing the ignored warning signs the doomed citizens of Pompeii experienced before their demise, Roman was able to show the different levels of earthquakes that lead up to volcanic eruption. She explored different types of non-eruptive volcanic unrest through a survey of case studies and explained the implications for eruption forecasting in the modern age. 

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