Harold D. Babcock Bibliography

Papers, etc.

Some of Babcock’s papers are at the Huntington Library. The AIP Niels Bohr Library & Archives has a 1962 Manuscript Autobiography (38 pp.), as well as 1975 and 1977 oral history interviews of Horace Babcock and others who worked with Harold Babcock.

Other References: Historical

Adams, Walter S., “Early Solar Research at Mt. Wilson,” Vistas in Astronomy 1, 619-623 (1955).

Babcock, Harold D., “George Ellery Hale,” PASP 50, 156-65 (1938).

Babcock, Harold D., “In 1903,” PASP 51, 19-23 (1939) [poem recounting first visit to Mt. Wilson].

Babcock, Horace W., “Diffraction Gratings at the Mount Wilson Observatory,” Physics Today 39, 7, 34-42 (1986).

Howard, Robert, “Eight Decades of Solar Research at Mt. Wilson,” Solar Physics 100, 1-2, 171-187 (1985).

Hufbauer, Karl, Exploring the Sun: Solar Science Since Galileo (Johns Hopkins Univ. Press, Baltimore, 1991).

Sandage, Allan, Centennial History of the Carnegie Institution of Washington. Vol. 1, The Mount Wilson Observatory: Breaking the Code of Cosmic Evolution (Cambridge Univ. Press, Cambridge, UK, 2004).

Simmons, Michael, “The History of Mount Wilson Observatory: Bringing Astronomy to an Isolated Mountaintop,” (Mt. Wilson Observatory Association, 1983).

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Other References: Scientific

Babcock, Harold D., “The Zeeman effect for Chromium,” Ap.J. 34, 217-33 (1911).

Babcock, Harold D., “Note on the Grouping of Triplet Separations Produced by a Magnetic Field,” Ap.J. 34, 288-93 (1911).

St. John, Charles E. & Harold D. Babcock, “A Displacement of Arc Lines Not Due to Pressure,“ Phys. Rev. 3, 487-88 (1914).

St. John, Charles E. & Harold D. Babcock, “A Study of the Pole Effect in the Iron Arc,” Ap.J. 42, 231-62 (1915).

St. John, Charles E. & Harold D. Babcock, “The Elimination of Pole-Effect from the Source for Secondary Standards of Wave-Length,” Ap.J. 46, 138-66 (1917).

Babcock, Harold D., “Note on the Polarization of the Night Sky,” Ap.J. 50, 228-31 (1919).

St. John, Charles E. & Harold D. Babcock, “Wave-Lengths of Lines in the Iron Arc from Grating and Interferometer Measures λ 3370- λ 6750,” Ap.J. 53, 260-99 (1921).

St. John, Charles E. & Harold D. Babcock, “An Investigation of the Constancy in Wave-Length of the Atmospheric and Solar Lines,” Ap.J. 55, 36-47 (1922).

Babcock, Harold D., “A Determination of e/m from Measurements of the Zeeman Effect,” Ap.J. 58, 149-63 (1923).

Babcock, Harold D., “A Study of the Infra-Red Solar Spectrum with the Interferometer,” Ap.J. 65, 140-62 (1927).

Babcock, Harold D., “Revision of the Value of e/m Derived from Measurements of the Zeeman Effect,” Ap.J. 69, 43-48 (1929).

Babcock, Harold D., “A Photographic Study Of the Solar Spectrum in the Region λ10000 to λ11000 A,” PASP 41, 274-76 (1929).

Babcock, Harold D., “The Relative Number of Lines of Different Intensity in the Solar Spectrum,” PASP 42, 209-13 (1930).

Babcock, Harold D., “The Construction and Characteristics of Some Diffraction Gratings,” PASP 45, 283-88 (1933).

Babcock, Harold D., “Wave Numbers of Infrared Spectral Lines Beyond λ10,000,”Phys. Rev. 46, 382-83 (1934)

Moore, Charlotte E. & Harold D. Babcock, “The Presence of Sulphur in the Sun,” Ap.J. 79, 492-97 (1934).

Russell, Henry Norris, Harold D. Babcock, & Charlotte E. Moore, “Series Lines of Magnesium in the Solar Spectrum,” Phys. Rev. 46, 826-27 (1934).

Babcock, Harold D., Charlotte E. Moore, & Wendell P. Hoge, “A Scale of Wave-Lengths in the Infra-Red Solar Spectrum,” Ap.J. 83, 103-20 (1936).

Babcock, Harold D., “Chemical Compounds in the Sun.,” Ap J. 102, 154-67 (1945).

Babcock, Harold Delos & Charlotte E. Moore, “The Solar Spectrum λ2914–λ3060,” Astronomical Journal 52, 41 (1946).

Babcock, Harold D., Charlotte E. Moore, & Mary F. Coffeen, “The Ultraviolet Solar Spectrum, λλ2935 to 3060,” Ap.J. 107, 287-302A (1948) [Errata].

Babcock, Harold D., “The Derivation of Vacuum Wave Numbers and the Reduction of Measured Wave Lengths to Standard Atmospheric Conditions.,” Ap.J. 111, 60-64 (1950).

Babcock, Harold D. & Horace W. Babcock, “The Ruling of Diffraction Gratings at the Mount Wilson Observatory,” Astronomical Journal 56, 120 (1951).

Babcock, Horace W. & Harold D. Babcock, “Mapping the Magnetic Fields of the Sun,” PASP 64, 282-87 (1952).

Babcock, Horace W. & Harold D. Babcock, “The Sun’s Magnetic Field, 1952-1954,” Ap.J. 121, 349-66 (1955).

Simpson, J.A., H.W. Babcock, & H.D. Babcock, “Association of a ‘Unipolar’ Magnetic Region on the Sun with Changes of Primary Cosmic-Ray Intensity, ” Phys. Rev. 98, 1402-06 (1955).

Babcock, H.W., B.H. Rule, & J.S. Fassero, “An Improved Automatic Guider,” PASP 68, 256 (1956).

Babcock, H.W. & H.D. Babcock, “Photospheric Magnetic Fields,” in Electromagnetic Phenomena in Cosmical Physics, Proceedings from IAU Symposium no. 6. Edited by B. Lehnert. International Astronomical Union. Symposium no. 6, (Cambridge University Press, 1958), p.239-47.

Babcock, Harold D., “The Sun’s Polar Magnetic Field,” Ap.J. 130, 364-65 (1959).

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Other Works: Popularizations, History, etc.

Babcock, Harold D., “Astronomy without a Telescope,” Popular Astronomy 43, 81-92 (1935).

Babcock, Harold D., “What’s in the Air?” Astronomical Society of the Pacific Leaflets 6, 322-29 (1953) [Leaflet #291, the address given on receipt of the Bruce Medal].

Harold D. Babcock

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