Prof S.I. Bailey, Globular cluster W Centauri

Globular Cluster W Centauri Bruce 24 inch, exp 2h

Naked eye, a hazy star, 4th magnitude.

Probably contains 30.000 stars. Distance (Shapley) 20.000 light years Diameter 350 light years

Has 128 variable stars (Bailey)

From Prof. S.I. Bailey Arequipa, Peru, 1923

Solon Irving Bailey (December 29, 1854 in Lisbon, New Hampshire – June 5, 1931 in Norwell, Massachusetts) was an American astronomer and discoverer of the main-belt asteroid 504 Cora, on June 30, 1902.

Bailey joined the staff of Harvard College Observatory in 1887. He received an M.A. from there in 1888 in addition to his previous M.A. from Boston University. After the observatory received the "Boyden Fund" bequest from the will of Uriah A. Boyden, Bailey played a major role in finding a site for Boyden Station in Arequipa, Peru, and was in charge of it from 1892 to 1919.

He was also one of the first to carry out meteorological studies in Peru, traveling extensively in desolate areas at very high altitude. Boyden Station was moved to South Africa in 1927 due to better weather conditions and became known as the Boyden Observatory.

He made extensive studies of variable stars in globular clusters in the southern skies. He also performed a light-curve analysis measured the rotaion period of the near-Earth asteroid 433 Eros during its 1903 opposition with great accuracy. Bailey was acting director of Harvard College Observatory from 1919 to 1921 after the death of Edward Charles Pickering and prior to the appointment of Harlow Shapley. He worked as a senior colleague with Henrietta Leavitt. He was elected a Fellow of the American Academy of Arts and Sciences in 1892. Irving died at his summer home in Hanover, from an illness caused by heart disease, in 1931

Photo ID: 6140