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Photoelectric spectrophotometry of emission nebulosities in the Magellanic Clouds

Published online by Cambridge University Press:  14 August 2015

H. R. Dickel ,
L. H. Aller  and
D. J. Faulkner
H. R. Dickel
Affiliation:
University of Michigan
L. H. Aller
Affiliation:
University of California, Los Angeles
D. J. Faulkner
Affiliation:
Mount Stromlo Observatory

Extract

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Photometric measurements of the emission nebulosities in the LMC are not numerous. Doherty, Henize, and Aller (1956) microphotometered both widened and unwidened objective-prism photographs covering a narrow wavelength range near Hα to obtain cross-sectional “intensity profiles” for certain nebulosities in the Large Cloud. These intensities were converted to surface brightnesses by tracing the widened spectra of stars of known magnitude and colour and using the method of Ambartsumian (1933). Peak intensities for each scan across a nebulosity are given in erg cm–2 sec–1 steradian–1.

Information

Type
Section II: The Magellanic Clouds
Information
Symposium - International Astronomical Union , Volume 20: The Galaxy and the Magellanic Clouds , 1964 , pp. 294 - 310
Copyright
Copyright © Australian Academy of Science 1964 

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