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Proceedings of the National Academy of Sciences of the United States of America
|
March 1, 1980
International Ultraviolet Explorer satellite observations of seven high-excitation planetary nebulae
L H Aller, C D Keyes
Proceedings of the National Academy of Sciences of the United States of America
|
May 13, 1999
The remarkably high excitation planetary nebula GC 6537
L H Aller, S Hung, W A Feibelman
Proceedings of the National Academy of Sciences of the United States of America
|
December 1, 1977
Chemical compositions of Magellanic Clouds' HII regions based on photoelectric spectrophotometry
L H Aller, S J Czyzak, C D Keyes
Proceedings of the National Academy of Sciences of the United States of America
|
April 1, 1979
Model nebulae and determination of the chemical composition of the Magellanic Clouds
L H Aller, C D Keyes, S J Czyzak
Proceedings of the National Academy of Sciences of the United States of America
|
May 1, 1986
Ultraviolet spectrum and probable chemical composition of the high-excitation planetary nebula M1-1
L H Aller, C D Keyes, W A Feibelman
Proceedings of the National Academy of Sciences of the United States of America
|
June 1, 1970
Excitation of Metastable Levels in Low Density Nebular Plasmas: [SII] and [ArIV]
S J Czyzak, T K Krueger, L H Aller
Proceedings of the National Academy of Sciences of the United States of America
|
March 1, 1972
Surface photometry of celestial sources from a space vehicle: introduction and observational procedures
F E Roach, B Carroll, L H Aller, et al.
Proceedings of the National Academy of Sciences of the United States of America
|
November 1, 1974
Chemical composition of nebulosities in the magellanic clouds
L H Aller, S J Czyzak, C D Keyes, et al.
Proceedings of the National Academy of Sciences of the United States of America
|
April 1, 1985
Spectrum and chemical composition of the remarkable planetary nebula NGC 6537
W Feibelman, L H Aller, C D Keyes, et al.
Proceedings of the National Academy of Sciences of the United States of America
|
August 9, 2001
Theoretical emission line ratios for [Fe III] and [Fe VII] applicable to the optical and infrared spectra of gaseous nebulae
F P Keenan, L H Aller, R S Ryans, et al.
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of 3
Search research articles
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Showing results (11-20 of 22) with videos related to
Sort By:
Page
of 3
Proceedings of the National Academy of Sciences of the United States of America
|
March 1, 1980
International Ultraviolet Explorer satellite observations of seven high-excitation planetary nebulae
L H Aller, C D Keyes
Proceedings of the National Academy of Sciences of the United States of America
|
May 13, 1999
The remarkably high excitation planetary nebula GC 6537
L H Aller, S Hung, W A Feibelman
Proceedings of the National Academy of Sciences of the United States of America
|
December 1, 1977
Chemical compositions of Magellanic Clouds' HII regions based on photoelectric spectrophotometry
L H Aller, S J Czyzak, C D Keyes
Proceedings of the National Academy of Sciences of the United States of America
|
April 1, 1979
Model nebulae and determination of the chemical composition of the Magellanic Clouds
L H Aller, C D Keyes, S J Czyzak
Proceedings of the National Academy of Sciences of the United States of America
|
May 1, 1986
Ultraviolet spectrum and probable chemical composition of the high-excitation planetary nebula M1-1
L H Aller, C D Keyes, W A Feibelman
Proceedings of the National Academy of Sciences of the United States of America
|
June 1, 1970
Excitation of Metastable Levels in Low Density Nebular Plasmas: [SII] and [ArIV]
S J Czyzak, T K Krueger, L H Aller
Proceedings of the National Academy of Sciences of the United States of America
|
March 1, 1972
Surface photometry of celestial sources from a space vehicle: introduction and observational procedures
F E Roach, B Carroll, L H Aller, et al.
Proceedings of the National Academy of Sciences of the United States of America
|
November 1, 1974
Chemical composition of nebulosities in the magellanic clouds
L H Aller, S J Czyzak, C D Keyes, et al.
Proceedings of the National Academy of Sciences of the United States of America
|
April 1, 1985
Spectrum and chemical composition of the remarkable planetary nebula NGC 6537
W Feibelman, L H Aller, C D Keyes, et al.
Proceedings of the National Academy of Sciences of the United States of America
|
August 9, 2001
Theoretical emission line ratios for [Fe III] and [Fe VII] applicable to the optical and infrared spectra of gaseous nebulae
F P Keenan, L H Aller, R S Ryans, et al.
Page
of 3