Revista Mexicana de Astronomía y Astrofísica
Volumen 4
Abril 1978

An Atlas of stellar spectra. II
H. L. Johnson
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The dimensions of /6/ Hebe as a result of occultation observations
D. W. Dunham & G. Mallen
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Visual and infrared observations of trapezium-like objects
M. Roth, J. Echevarria, J. Franco, & J. Warman
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Thirteen-color photometry and analysis of the short period variability in Nova V1500 Cygni 1975
L. Carrasco, J. Franco, C. Chavarria, E. de Lara, & G. Sanchez
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Thirteen-color photometry of subdwarf stars. I - Observations, sensitivity of the indices, and evolutionary effects
W. J. Schuster
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Internal motions in H II regions. V - The planetary nebula M1-67, possibly an H II region
P. Pismis & E. Recillas-Cruz
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El Quemado, a new type of stone meteorite fallen near Acapulco - A preliminary report
M. C. Michel-Levy & J. C. Lorin
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El Quemado, a new type of stone meteorite fallen near Acapulco: a preliminary report
M. Christophe-Michel-Lévy & J. C. Lorin
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Dispersion of radio waves by plasma around BL Lac objects
D. Dultzin-Hacyan, S. Hacyan, & M. Rosado
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Photometric Study of Trapezium-Type Systems
J. Echevarria, M. Roth, & J. Warman
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The orbital elements of 25 G Crucis /HD 108250/
C. A. Hernandez & E. B. de Hernandez
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Thirteen-color photometry of subdwarf stars. II - Calibration of the 37-45 excess using spectroscopic /Fe/H/ abundances
W. J. Schuster
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Thirteen-Color Photometry of Subdwarf Stars - Part Three - Chemical Compositions Kinematics and the G45-63 Diagram
W. J. Schuster
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Spectral types in the Zeta SCULPTORIS open cluster
H. Levato, S. Malaroda, & N. Morrell
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Rate of star formation and gas density in irregular galaxies
J. Lequeux
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Internal motions in H II regions. VI - S 140 and the associated CO cloud
P. Pismis, M. A. Moreno, & I. Hasse
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Internal motions in H II regions. VII - The emission nebulae complex S 147, 148 and 149
E. Recillas-Cruz & P. Pismis
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Physical conditions in two halo planetary nebulae
S. Torres-Peimbert & M. Peimbert
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On the 4430 A interstellar band - A visual classification
A. Arellano Ferro & R. F. Garrison
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