Known as the “census taker of the sky,” Annie Jump Cannon was a brilliant astronomer that revolutionized the way scientists classify stars. Not only did she develop the important Harvard spectral system, she also classified about 350,000 stars manually.
What is Annie Jump Cannon best known for?
Spectral Type Annie Jump Cannon/Known for
How did Annie Jump Cannon make her discovery?
Cannon negotiated a compromise: she started by examining the bright southern hemisphere stars. To these stars, she applied a third system, a division of stars into the spectral classes O, B, A, F, G, K, M. Her scheme was based on the strength of the Balmer absorption lines.
Where did Annie Jump Cannon do her work?
Synopsis. Born on December 11, 1863, in Dover, Delaware, Annie Jump Cannon studied physics and astronomy at Wellesley College and went on to work at Harvard Observatory.
How old was Annie Jump Cannon when she died?
77 years (1863–1941) Annie Jump Cannon/Age at death In 1938, Cannon became the William C. Bond Astronomer and Curator of Astronomical Photographs, a position she held until her death on April 13, 1941, at the age of 77. She catalogued some 350,000 stars in her lifetime, discovering 300 variable stars, five novas, and one spectroscopic binary star in the process.
Why was Annie Jump Cannon deaf?
Cannon was a child she had a cold. The cold caused Ms. Cannon to become deaf. Every year she could hear less and less until she couldn t hear anymore.
What did Annie Jump Cannon do for the HR diagram?
Hertzsprung Russell Diagram It was created in 1910 by Ejnar Hertzsprung and Henry Norris Russell. It plots a stars luminosity against its surface temperature. Stars are grouped into spectral types which can be viewed as either temperature or color groupings that were created by Annie Jump Cannon in the 1890s.
How did Annie Jump Cannon lose her hearing?
Cannon was a child she had a cold. The cold caused Ms. Cannon to become deaf. Every year she could hear less and less until she couldn t hear anymore.
Is Annie Jump Cannon dead?
Deceased (1863–1941) Annie Jump Cannon/Living or Deceased