Vol. 1 No. 1 (1974)

Canto J., Daltabuit E. (Author)

5

Empirical Computation of Collisional Ionization Rates of Atoms and Ions by Electrons

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Mendoza E. E. (Author)

11

APL in Astronomy

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Imhoff C. L., Mendoza v E. E. (Author)

25-33

Computed luminosities for T Tauri and related objects.

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Mendoza E. E., Hacyan S. (Author)

35

Use of APL in Runge-Kutta Methods

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Pismis P. (Author)

45-54

Internal motions in H II regions. I. The radial velocity field of NGC 6164 - 6165.

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Warman J. (Author)

55

The use of Josephson Effect for the Detection of Far Infrared and Microwave Radiation

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Mendoza E. E., Gonzalez S. F. (Author)

67-74

Multicolor photometry of metallic-line stars. I. nu1 Draconis and nu2 Draconis.

Celaya L. F., Cobos F., Firmani C. (Author)

75

A folded Schmidt Camera for a Television Multichannel Sensor

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Maupome L. (Author)

81

Possible Meteorite Crater in Mexico

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Bozkurt S. (Author)

89-100

UBV photometry of the southern open cluster NGC 5822.

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Allen C., Poveda A., Worley C. E. (Author)

101-118

The kinematics of trapezium systems.

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González S. F., Gómez T., Mendoza v E. E. (Author)

119-120

Multicolor photometry of metallic-line stars. II. Additional observations of ν Draconis.

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Pismis P., Rosado M. (Author)

121

Internal motions in H II regions. II. The radial velocity field of IC 443.

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Peimbert M., Rodriguez L. F., Torres-Peimbert S. (Author)

129

Ionization Structure of Gaseous Nebulae: Sulphur, Nitrogen and Helium

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Warman J., Malacara Z., Breger M. (Author)

143-150

The light curves of Delta Scuti stars HR 1170 and HR 7563.

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Daltabuit E., Canto J. (Author)

151

On the Structure and Evolution of a Shock Wave Model of Qsq's

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Rodriguez L. F., Torres-Peimbert S., Peimbert M. (Author)

161

The Ionization Structure of HII Regions of Different Helium Content

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Mendoza E. E. (Author)

175-201

Multicolor photometry of metallic-line stars. III. A photometric catalogue.

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Daltabuit E., Andrade J., Canto J., Peimbert M. (Author)

203

On the Ionization of Hydrogen and Helium by Hydromagnetic Shock Waves

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Cruz-González C., Recillas-Cruz E., Costero R., Peimbert M., Torres-Peimbert S. (Author)

211-259

A catalogue of galactic O stars and the ionization of the low density interstellar medium by runaway stars.

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Bisiacchi G. F., Dultzin-Hacyan D., Firmani C., Hacyan S. (Author)

261-267

Physical conditions on the stream of Cyg X-1 produced by the X-ray flux.

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Canto J., Daltabuit E. (Author)

269

Erratum

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Maupomi L. (Author)

269

Addendum

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Pirez-Peraza J., Galindo Trejo J. (Author)

273

The Velocity Dependence of the Acceleration Spectrum of Solar Protons

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Carrasco L., Strom K. M., Strom S. E. (Author)

283

A Polarimetric Search for Circumstellar Envelopes in the Young Clusters NGC 6611 and NGC 225

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Peimbert M., Rayo J. F., Torres-Peimbert S. (Author)

289-297

Observations of faint H II regions in our Galaxy.

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Johnson H. L., Mitchell R. I. (Author)

299

Thirteen-color photometry of 1380 bright stars.

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Schuster W. J. (Author)

327-342

13-color photometry of solar-type stars.

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Peña J. H. (Author)

343-350

Measurements of the ultraviolet flux of Betelgeuse.

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Feinstein A., Forte J. C., Cabrera A. (Author)

351

The Total Lunar Eclipse of may 24-25, 1975

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Hacyan S., Dultzin-Hacyan D., Torres-Peimbert S., Peimbert M. (Author)

355

Galactic Chemical Evolution and the Helium Enrichment

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Mendoza v E. E. (Author)

363-371

Photometric observations of O I and Halpha for the Hyades stars.

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Pismis P., Moreno M. A. (Author)

373-380

Internal motions in H II regions. III. The nebular complex NGC 2467.

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Gómez T., Mendoza v E. E. (Author)

381-384

A finding list of Halpha -emission objects in the Coalsack direction.

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Research articles