Revista Mexicana de Astronomía y Astrofísica
Volumen 20
Abril 1990

Results from an OH-maser survey in the galactic plane
E. M. Arnal, E. Bajaja, R. Morras, & W. G. L. Pöppel
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Evolution of the Ha profile of the Be star HD 184279
M. Alvarez, D. Ballereau, & J. Chauville
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On Equilibrium Figures for Ideal Fluids in the Form of Confocal Ellipsoids Rotating with Common Angular Velocity
F. J. Martinez, J. Cisneros, & D. Montalvo
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A new determination of the galactic electron temperature gradient for extended and low density ionized gas
I. N. Azcárate, J. C. Cersosimo, & F. R. Colomb
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Minor Planets Observations from may 1986 TO may 1987
A. Lopez Garcia, J. A. Lopez Orti, & R. Lopez Machi
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Strömgren photometry of the high amplitude d Scuti star HD 79889
E. Rodríguez, P. López de Coca, A. Rolland, & R. Garrido
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Identification charts of PHL objects III. Plate centered at 2h28m and -5.5°
E. Chavira
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New H2O masers in color-selected IRAS point sources
A. L. Gyulbudaghian, L. F. Rodríguez, & S. Curiel
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H2O and SiO maser emission in OH/IR stars
Y. Gómez, J. M. Moran, & L. F. Rodríguez
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Further galactic orbits and tidal radii of globular clusters
C. Allen
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Evidence for the Presence of a Warping of the Ionizing Gas I-Ayer Derived from H166a Emission Observations in the Outer Galaxy
I. N. Azcarate, J. C. Cersosimo, & F. R. Colomb
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On Wolf-Rayet stars, black holes and co-rotating binary systems
A. Mosqueda & G. Koenigsberger
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The IUE spectrum of the Wolf-Rayet system HD 193077
G. Koenigsberger
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Remarks to Lapicz positions of stars in NGC 2264
M. G. López-Molina, L. Neri, & C. Chavarría-K.
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Total number of planetary nebulae in different galaxies and the PN distance scale
M. Peimbert
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uvby-β photoelectric photometry of the open cluster NGC 7062
R. Peniche, J. H. Peña, S. H. Díaz Martínez, & T. Gómez
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uvby-β photoelectric photometry of selected RR Lyrae stars in Serpens
J. H. Peña, L. M. Díaz, & R. Peniche
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Erratum: on Equilibrium Figures for Ideal Fluids in the Form of Confocal Ellipsoids Rotating with Common Angular Velocity
F. J. Martinez, J. Cisneros, & D. Montalvo
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