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Scientists sketch aged star system using over a century of observations

Scientists sketch aged star system using over a century of observations
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United States , Milky Way , Goddard Space Flight Center , United Kingdom , Vanderbilt University , Rodolfo Montez Jr , Laura Vega , Harriettg Jenkins , Kim Weaver , Keivan Stassun , Harvard Smithsonian , European Space Agency Xmm Newton , Vanderbilt University In Nashville , American Association Of Variable Star Observers , Harvard College Observatory In Cambridge , Engagement Minority University Research , Submillimeter Array , European Space Agency , Space Flight Center , American Association , Variable Star Observers , Digital Access , Sky Century , Harvard College Observatory , Predoctoral Fellow , Minority University Research ,

Scientists sketch aged star system using over a century of observations

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IMAGE: U Mon s primary star, an elderly yellow supergiant, has around twice the Sun s mass but has billowed to 100 times the Sun s size. Scientists know less about the companion, the.
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Credit: Credit: NASA s Goddard Space Flight Center/Chris Smith (USRA/GESTAR)
Astronomers have painted their best picture yet of an RV Tauri variable, a rare type of stellar binary where two stars - one approaching the end of its life - orbit within a sprawling disk of dust. Their 130-year dataset spans the widest range of light yet collected for one of these systems, from radio to X-rays. ....

United States , Milky Way , Goddard Space Flight Center , United Kingdom , Vanderbilt University , Rodolfo Montez Jr , Laura Vega , Harriettg Jenkins , Kim Weaver , Jeanette Kazmierczak , Keivan Stassun , Harvard Smithsonian , European Space Agency Xmm Newton , Vanderbilt University In Nashville , American Association Of Variable Star Observers , Harvard College Observatory In Cambridge , Engagement Minority University Research , Submillimeter Array , European Space Agency , Space Flight Center , American Association , Variable Star Observers , Digital Access , Sky Century , Harvard College Observatory , Predoctoral Fellow ,

Cecilia Payne-Gaposchkin | British-born American astronomer

Payne entered the University of Cambridge in 1919. A lecture by astronomer Sir Arthur Eddington on his expedition to the island of Principe that confirmed Einstein’s theory of general relativity inspired her to become an astronomer. Eddington encouraged her ambition, but she felt there were more opportunities for a woman to work in astronomy in the United States than in Britain. In 1923 she received a fellowship to study at the Harvard College Observatory in Cambridge, Mass., after a correspondence with its director, Harlow Shapley.
Beginning in the 1880s, astronomers at Harvard College such as Edward Pickering, Annie Jump Cannon, Williamina Fleming, and Antonia Maury had succeeded in classifying stars according to their spectra into seven types: O, B, A, F, G, K, and M. It was believed that this sequence corresponded to the surface temperature of the stars, with O being the hottest and M the coolest. In her Ph.D. thesis (published as ....

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