Jacobus ("Koos") Petterson, best known in the astronomical community for his analysis of X-ray binary systems, died at his home in Carrollton, Georgia on 30 May 1996. Petterson was born in Rotterdam, The Netherlands, on 16 August 1946 and received an MS in Engineering Mathematics in 1970 from the Technical University in Delft for work with A. J.
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Walt Mitchell died 26 July 1996 in a nursing home near Columbus, Ohio. He had battled bravely for several years against complications resulting from the AIDS virus. He kept his spirits high to the end.
Leonard J. Martin, long-time staff member of the Lowell Observatory and noted Mars observer, died suddenly on 7 April 1997 at his home in Bend, Oregon. He is survived by his wife Claudia; sons Chris and Nick, and daughter Jennifer.
Thomas H. Markert died on 19 June 1996, after a long battle with cancer. Tom received his BS from Caltech in 1970 and his PhD from MIT in 1975, both in physics, joining the AAS the next year. He remained at MIT throughout his career, first as a member of the research staff and then as Principal Research Scientist in the Center for Space Research.
Robert Benjamin Leighton died 9 March 1997 after a decade-long illness, gracefully endured. His survivors include his wife Marge Leighton, sons Alan and Ralph, and two grandchildren.
Jerome Kristian (called Jerry, by his friends) was born 5 June 1934, in Wilwaukee, Wisconsin, and died 22 June 1996 in an ultralight airplane accident. He attended the University of Chicago, obtaining MS and PhD degrees (Physics), the latter in 1962 with a thesis on "Hydromagnetic Equilibrium of a Fluid Sphere," supervised by S. Chandrasekhar and published in three Astrophysical Journal papers in 1963-64. While at the University of Texas (1962-64) as an instructor, Kristian collaborated with R. K.
Our colleague and friend, James Jay Klavetter, Assistant Professor of Astronomy at California State University, Sacramento, died of leukemia on 24 February 1997, at his home in Sacramento. Jim is survived by his parents Elaine and Floyd, sister Mary, and brothers Elmer and Floyd. Jim will be remembered as an inspired individual whose fascination with Nature shaped his life; he studied astronomy professionally and spent his leisure time outdoors with his dogs and his friends.
Igor Jurkevich was born in Bmo, Czechoslovakia on 16 September 1928 and completed his secondary education at the Russian Gymnasium of the Displaced Persons' camp in Schleissheim, Germany, outside Munich. After World War II, he came to the United States and received his BS in Mathematics at Dennison and graduate degrees in Physics (1955) and Astronomy (1964) at the University of Pennsylvania.
Although Allan S. (Bud) Jacobson will be remembered by many of us for his pioneering work in nuclear gamma ray spectroscopy, his life and career were unusually rich. His service in the Air Force kindled a lifelong interest in military history and war games; his beautiful bass voice led him to an early career in show business; and his love of art resulted in the development of award-winning software for the visual display of scientific data. All who knew him will also remember his banjo playing and singing, which enlivened long balloon field trips and numerous social events.
John B. Irwin died of lymphoma cancer in Tucson, Arizona on 20 April 1997. He was born in Princeton, New Jersey, on 7 July 1909, the son of Frank and Mary (Barrows) Irwin. His father was later professor of mathematics at University of California, Berkeley. He attended elementary and high schools in Berkeley and received a BSc in mechanical engineering in 1933 and his PhD in astronomy in 1946 from UCB. Much of his graduate work was done at Lick Observatory, starting in 1941, under the direction of Art Wyse and Director William H.
Robert Herman, L.P. Gilvin Centennial Professor in the Department of Civil Engineering and staff member of the Center for Statistical Mechanics at the University of Texas, Austin, died 13 February 1997.
Professor Robert L. Golden of New Mexico State University, Las Cruces, died on 7 April 1995 after a brief illness. He was director of the Particle Astrophysics Laboratory and taught classes in electrical engineering. He was well known not only for his jubilant outgoing personality but also for the discovery of anti-protons in galactic cosmic rays and research into the properties of cosmic ray electrons (of both charges).
Thornton C. Fry was an industrial mathematician, probably the first to head a division devoted to the subject, initially at Western Electric Company (1916-1924) and later as part of Bell Telephone Laboratories. He was born in Findlay, Ohio on 7 January 1892, and received degrees from Findlay College (AB 1912, honorary DSc 1958) and the University of Wisconsin (MA 1913, PhD 1920 in mathematics, physics, and astronomy). He was involved in government scientific work in both the world wars, during the latter serving on a small committee with Edward J.
Isadore (Ira) Epstein, Professor Emeritus of Astronomy at Columbia University, died 17 September 1996, at the age of 76. He was an early researcher in the modem theory of stellar structure, and carried out important observatory site surveys in the southern hemisphere.
Robert H. Dicke, who made fundamental and lasting contributions to radio astronomy, solar physics, gravitational physics, and cosmology, died in Princeton on 4 March 1997. He is survived by his wife, Annie, whom he married in 1942 and three children. Dicke held the Cyrus Fogg Brackett professorship of physics from 1957 to 1975 and the Albert Einstein professorship of science from 1975 to 1984 (emeritus 1984-97).
Louis Berman, astronomer and teacher, was born in London, England on 21 March 1903, the son of George and Jennie Berman, recent immigrants from Lithuania, then part of Russia. When Louis was three, the family moved to St. Paul, Minnesota, where he attended public schools and the University of Minnesota. He earned his AB degree in 1925, his AM in 1927, and published several short papers on his visual double-star measurements, an asteroid orbit, and a comet orbit.
Jeno Barnothy, an outstanding pioneer of cosmic ray research and noted astrophysicist, died on 11 October 1996 at the age of 92 in Evanston, Illinois. He was born on 28 October 1904 in Kassa, Hungary (now Slovakia) and received his PhD in 1939 at the Peter Pazmany (now Loránd Eötvös) University, Budapest, Hungary. He was awarded of merit of the Hungarian Academy of Sciences in 1939 and the Eötvös Order in 1948.
On May 1, 1992, Professor Emeritus of Astronomy Robert J. Wood died suddenly at age 75. Central Florida lost one of its great teachers of astronomy. He was the designer of Astronaut Hall and the professor of astronomy at Brevard Community college, Cocoa, Florida. Many thousands of students in the Cape Canaveral area went through his famous classes from 1964 until his retirement in 1984.
After a long fight against prostatic cancer, Clayton A. Smith died on May 27th, 1993. His illness was first diagnosed in the early 1980’s, but a combination of his otherwise good health, careful medical treatment and a long determination on his part to remain active as long as possible gave Clayton many additional years of productive life.
Obituaries for Nicholas Mayall, extragalactic astronomer on the staffs of Lick and Kitt Peak Observatories, will appear in the Yearbook – The American Philosophical Society and in the Biographical Memoirs of the National Academy of Sciences.