News

Michael Seemann, DTM’s Longtime Instrument Maker, Passes Away

Michael Seemann, DTM’s Longtime Instrument Maker, Passes Away

Michael Seemann, who passed away on September 18, 2018, was for decades an outstanding instrument maker at DTM and for many years the campus manager.

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John Graham, Expert on Young Stars, Dead at 79

John Graham, Expert on Young Stars, Dead at 79

Carnegie astronomer John Graham—who also served during different periods as both Vice President and Secretary of the American Astronomical Society—died at home in Washington, D.C., September 13 after a battle with brain cancer.

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When is a Star Not a Star?

When is a Star Not a Star?

The line that separates stars from brown dwarfs may soon be clearer thanks to new work led by Carnegie’s Serge Dieterich.

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DTM Staff Scientist Erik Hauri Passes Away

DTM Staff Scientist Erik Hauri Passes Away

Although cut unfairly short, Erik Hauri made the most of his life and leaves behind a loving family and a record of major contributions to the understanding of the natural world around us.

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August 2018 Newsletter

August 2018 Newsletter

As Washington stews in its typically extreme August heat and humidity, the month has proven to be a very active one at DTM with some good, and some not so good, news to report.

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Stellar "Swarms" Help Astronomers Understand the Evolution of Stars

Stellar

New work from Carnegie's Jonathan Gagné and the American Museum of Natural History's Jacqueline Faherty identified nearly a thousand potential members and 31 confirmed members of stellar associations.

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