Philosophy
Anton M. J. Gehrels
February 21st, 1925 to July 11th, 2011
In a career that spanned more than half a century, Gehrels fostered new research on asteroids and comets, including those that pose a threat to Earth.
Tom Gehrels, an internationally noted planetary scientist and astronomer at the University of Arizona, as well as a hero of the Dutch Resistance during WWII, died Monday. He was 86.
Gehrels was among the first members of the fledgling Lunar and Planetary Laboratory when he joined the UA in 1961. During a long and distinguished career Gehrels pioneered new research on asteroids and comets, especially those that pose a collision threat to Earth. He also developed and taught introductory astronomy courses that were popular with non-science undergraduates.
Anton M.J. Gehrels was born Feb. 21, 1925, in Haarlemmermeer, the Netherlands. When Nazi Germany invaded the Netherlands in 1939, Gehrels joined the Dutch Resistance, fled to England and later was part of Britain's Special Operations Executive, which sabotaged and spied on the Germans.
After graduating from Leiden University in the Netherlands in 1951 with a degree in physics and astronomy, Gehrels earned a doctorate in astronomy and astrophysics at the University of Chicago in 1956. During the 1950s, Gehrels pioneered the first photometric system of asteroids and discovered the opposition effect in the brightness of asteroids.
At Chicago, he also met and worked with Nobel astrophysicist Subrahmanyan Chandrasekhar and astronomer Gerard P. Kuiper. When Kuiper left Chicago in 1960 to start the UA Lunar and Planetary Laboratory, Gehrels followed in 1961 and continued a stellar career that would last another half a century.
During the 1960s, Gehrels pioneered the study of wavelength dependence of polarization of stars and planets. His research interests then migrated to imaging photopolarimetry of Jupiter and Saturn. He was the principal investigator for the Pioneer 10 and 11 Imaging Photopolarimeters, which sent back the first images of Saturn's mysterious F-ring.
In 1980, Gehrels started the Spacewatch Project, which uses telescopes on Kitt Peak, near Tucson, to survey the sky for asteroids, including potentially dangerous ones. He also founded the highly respected Space Science Series, still published by the University of Arizona Press, and served as general editor for the first 30 volumes.
In 2007, the American Astronomical Society's Division for Planetary Sciences presented Gehrels with the Harold Masursky Award for meritorious service to planetary science. Professor Gehrels' current research interest was universal evolution.
In April 2011, Gehrels was honored for his 50 years of service at the annual University of Arizona Service Awards luncheon.
- Deceased--victor Blanco
Victor Blanco March 10th, 1918 to March 8th, 2011 "Victor Blanco, Stargazer, Dies at 92" by Dennis Overbye March 16th, 2011 The New York Times Victor Blanco, a Puerto Rican astronomer who helped build a major outpost for American science, the Cerro Tololo...
- Deceased--donald C. Backer
Donald C. Backer November 9th, 1943 to July 25th, 2010 [Wikipedia lists "July 25th"; article lists "July 21st".] "UC Berkeley astronomer Don Backer dies" by David Perlman July 31st, 2010| San Francisco Chronicle UC Berkeley astronomer Don Backer, who...
- Pluto Fizzled At Iau's Rio Meeting
The IAU's Rio meeting never discussed the sensitive issue of Pluto's status. "Pluto still not a planet after astronomy meeting" by Dan Vergano August 13th, 2009 USA Today An international astronomy meeting ended Thursday in Rio de Janeiro,...
- Deceased--frank J. Low
Frank J. Low November 23rd, 1933 to June 11th, 2009 "Frank J. Low, Who Helped Drive Field of Infrared Astronomy, Dies at 75" by Dennis Overbye June 21st, 2009 The New York Times Frank J. Low, who helped astronomers extend their vision beyond visible...
- Deceased--arthur D. Code
Arthur D. Code August 13th, 1923 to March 11th, 2009 "Arthur D. Code, pioneering space astronomer, dies" by Terry Devitt March 16th, 2009 University of Wisconsin--Madison News Arthur D. Code, whose lifelong love of the stars and the night sky led to...
Philosophy
Deceased--Anton M. J. Gehrels
Anton M. J. GehrelsFebruary 21st, 1925 to July 11th, 2011
"Astronomer Tom Gehrels, 1925-2011"
by
Jeff Harrison
July 12, 2011
The University of Arizona
by
Jeff Harrison
July 12, 2011
The University of Arizona
In a career that spanned more than half a century, Gehrels fostered new research on asteroids and comets, including those that pose a threat to Earth.
Tom Gehrels, an internationally noted planetary scientist and astronomer at the University of Arizona, as well as a hero of the Dutch Resistance during WWII, died Monday. He was 86.
Gehrels was among the first members of the fledgling Lunar and Planetary Laboratory when he joined the UA in 1961. During a long and distinguished career Gehrels pioneered new research on asteroids and comets, especially those that pose a collision threat to Earth. He also developed and taught introductory astronomy courses that were popular with non-science undergraduates.
Anton M.J. Gehrels was born Feb. 21, 1925, in Haarlemmermeer, the Netherlands. When Nazi Germany invaded the Netherlands in 1939, Gehrels joined the Dutch Resistance, fled to England and later was part of Britain's Special Operations Executive, which sabotaged and spied on the Germans.
After graduating from Leiden University in the Netherlands in 1951 with a degree in physics and astronomy, Gehrels earned a doctorate in astronomy and astrophysics at the University of Chicago in 1956. During the 1950s, Gehrels pioneered the first photometric system of asteroids and discovered the opposition effect in the brightness of asteroids.
At Chicago, he also met and worked with Nobel astrophysicist Subrahmanyan Chandrasekhar and astronomer Gerard P. Kuiper. When Kuiper left Chicago in 1960 to start the UA Lunar and Planetary Laboratory, Gehrels followed in 1961 and continued a stellar career that would last another half a century.
During the 1960s, Gehrels pioneered the study of wavelength dependence of polarization of stars and planets. His research interests then migrated to imaging photopolarimetry of Jupiter and Saturn. He was the principal investigator for the Pioneer 10 and 11 Imaging Photopolarimeters, which sent back the first images of Saturn's mysterious F-ring.
In 1980, Gehrels started the Spacewatch Project, which uses telescopes on Kitt Peak, near Tucson, to survey the sky for asteroids, including potentially dangerous ones. He also founded the highly respected Space Science Series, still published by the University of Arizona Press, and served as general editor for the first 30 volumes.
In 2007, the American Astronomical Society's Division for Planetary Sciences presented Gehrels with the Harold Masursky Award for meritorious service to planetary science. Professor Gehrels' current research interest was universal evolution.
In April 2011, Gehrels was honored for his 50 years of service at the annual University of Arizona Service Awards luncheon.
- Deceased--victor Blanco
Victor Blanco March 10th, 1918 to March 8th, 2011 "Victor Blanco, Stargazer, Dies at 92" by Dennis Overbye March 16th, 2011 The New York Times Victor Blanco, a Puerto Rican astronomer who helped build a major outpost for American science, the Cerro Tololo...
- Deceased--donald C. Backer
Donald C. Backer November 9th, 1943 to July 25th, 2010 [Wikipedia lists "July 25th"; article lists "July 21st".] "UC Berkeley astronomer Don Backer dies" by David Perlman July 31st, 2010| San Francisco Chronicle UC Berkeley astronomer Don Backer, who...
- Pluto Fizzled At Iau's Rio Meeting
The IAU's Rio meeting never discussed the sensitive issue of Pluto's status. "Pluto still not a planet after astronomy meeting" by Dan Vergano August 13th, 2009 USA Today An international astronomy meeting ended Thursday in Rio de Janeiro,...
- Deceased--frank J. Low
Frank J. Low November 23rd, 1933 to June 11th, 2009 "Frank J. Low, Who Helped Drive Field of Infrared Astronomy, Dies at 75" by Dennis Overbye June 21st, 2009 The New York Times Frank J. Low, who helped astronomers extend their vision beyond visible...
- Deceased--arthur D. Code
Arthur D. Code August 13th, 1923 to March 11th, 2009 "Arthur D. Code, pioneering space astronomer, dies" by Terry Devitt March 16th, 2009 University of Wisconsin--Madison News Arthur D. Code, whose lifelong love of the stars and the night sky led to...