RMxAA

Revista Mexicana de Astronomía y Astrofísica

ISSN: 3061-8649

Vol. 21 No. 1 (1990)

Published January 1, 1990
Portada RMxAA

Research articles

S. Torres-Peimbert
1-765
Memorias de la Sexta Reunión Regional Latinoamericana de Astronomía de la Unión Astronómica Internacional, Gramado, Rio Grande do Sul (Brazil), 16 - 20 Oct 1989.
S. Torres-Peimbert
13
Introduccion a Las Memorias
PDF
J. R. D. Lepine
14
Prefacio
PDF
M. G. Pastoriza
15
Discurso de Inauguracao
PDF
S. Ferraz-Mello
21
Reporte de la Asamblea General de la VI Reunion Regional Latinamricana de la Union Astronomica Internacional
PDF
J. Klapp, J. Cervantes-Cota, P. Chauvet
23
Numerical Results for a Polytropic Cosmology Interpreted as a Dust Universe Producing Gravitational Waves
PDF
M. G. Corona-Galindo, J. Klapp, A. Vazquez
28
Instabilities in a Relativistic Viscous Fluid
PDF
M. G. Corona-Galindo, O. Cardona, J. Klapp
31
Influence of Helium in Gravitational Instabilities
PDF
J. C. Carvalho, J. A. S. Lima
33
Newtonian Version of the Variable Mass Theory of Gravity
PDF
J. C. N. de Araujo, R. Opher
38
Formation of Voids from Negative Density Perturbations
PDF
P. S. Pellegrini, L. N. da Costa
41
Nearby galaxy redshift surveys.
PDF
L., Jr. Sodré, H. V. Capelato, J. E. Steiner, A. Mazure, D. Proust
52
The clusters of galaxies SC2008-57 (A3667).
PDF
H. Quintana, A. Ramírez
57
Two examples of clusters dynamical cusps: A496 and Sersic40/6.
PDF
E. Salvador-Solé, M. Sanromà
61
On the universality of density profiles in clusters of galaxies.
PDF
L., Jr. Sodré, H. V. Capelato
65
Low levels of luminosity segregation in clusters of galaxies: evidence for their dynamical youth?
PDF
A. Ramírez, H. Quintana
69
Clusters of galaxies with double components.
PDF
E. M. de Gouveia Dal Pino, R. Opher
74
Is the superluminal motion of compact sources a consequence of the dynamics of propagation of thermal instabilities?
PDF
H. Fagundes
79
A suggestion on the pair of QSO triplets 1130+106 {B,A,C}, {X,Y,Z}.
PDF
C. R. Rabaca, Z. Abraham
85
Energetic and Structural Analysis of Compact Extragaiactic Sources Derived from the High-Frequency Spectral Turnover
PDF
L. A. Aguilar
89
Violent Relaxation, Dynamical Instabilities and the Formation of Elliptical Galaxies
PDF
J. E. Telles, R. E. de Souza, J. C. Penereiro
99
Spherical galaxies.
PDF
J. P. S. Lemos
103
Disc Instability to the Pulsating Mode
PDF
T. K. Chatterjee
105
A Dynamical Study of the Formation of Peculiar Galaxies
PDF
D. R. Altschuler
109
The variability of extragalactic radio sources.
PDF
I. Puerari, H. A. Dottori
126
Spiral structure in NGC 1566.
PDF
S. Junqueira, J. A. de Freitas Pacheco
131
An Estimate of the Tidal Effects in the Dynamics of the Binary Galaxies
PDF
H. Andernach, C. M. Andreazza
136-140
The Distribution of Radio Sources Towards Rich Clusters of Galaxies
PDF
E. M. de Gouveia Dal Pino, R. Opher
141
Are the observed filaments in extended radio sources due to synchrotron radiation thermal instabilities?
PDF
L. C. Jafelice, R. Opher, A. S. de Assis, J. Busnardo-Neto
145
Current Generation in Extragalactic Jets by MHD Waves
PDF
L. C. Jafelice, R. Opher
149
Kinetic Alfven Waves and the Depletion of the Thermal Population in Extragalactic Jets
PDF
L. C. Jafelice, R. Opher
152
The magnetization of the intergalactic medium by extragalactic jets.
PDF
D. F. de Mello Rabaça, Z. Abraham
155-157
Study of the variability of the nucleus of Centaurus A.
D. Fernandes de Mello Rabaca, Z. Abraham
155
Study of the variability of the nucleus of Centaurus A.
PDF
M. F. S. Schroder, M. G. Pastoriza, E. Mediavilla
158
CCD Surface Photometry of Southern Galaxies in BVRI
PDF
R. Terlevich
163
Star formation in galactic nuclei.
PDF
S. D. Kirhakos, J. E. Steiner
169
X-Rays and Infrared Selected AGN
PDF
C. Kotanyi
173
NGC 3309: an S-shaped radio galaxy in a nearby cluster.
PDF
C. Winge, M. G. Pastoriza, T. Storchi-Bergmann
177
On the low state of activity of NGC 3783.
PDF
D. Alloin, E. Bica
182
New routes in the analysis of composite stellar populations.
PDF
M. G. Pastoriza, E. Ludke, E. Bica
187
Spatial population synthesis and emission line analysis of NGC 5253.
PDF
E. Terlevich, A. I. Díaz, M. Pastoriza, R. Terlevich, H. Dottori
192
The first direct detection of red supergiants in a giant H II region.
PDF
W. J. Maciel, C. C. M. Leite
197
New Results on the Determination of the Pregalactic Helium Abundance
PDF
E. Bica, J. F. C., Jr. Santos, D. Alloin
202
Near-infrared spectral evolution of blue LMC clusters: a comparison with Galactic open clusters.
PDF
C. Bonatto, S. Lipari, M. G. Pastoriza
207
Optical Emission in Some Luminous IRAS Galaxies
PDF
H. Quintana, J. F. C., Jr. Santos, H. Dottori, E. Bica
209
Stellar content in dumbbell galaxies.
PDF
T. Storchi-Bergmann, E. Bica, M. G. Pastoriza
213
The central region of a sample of Seyfert 2 galaxies.
PDF
E. Terlevich, A. I. Díaz, R. Terlevich
218
What is the Ca II feature in the near IR telling us about active galactic nuclei?
PDF
A. I. Díaz, E. Terlevich, B. E. J. Pagel, J. M. Vílchez, M. G. Edmunds
223
Abundance analysis of giant H II regions in nearby spirals.
PDF
H. O. Castañeda, J. M. Vilchez, M. V. F. Copetti
231
Very high velocity gas in giant extragalactic H II regions.
PDF
V. Robledo-Rella, C. Firmani
236
Initial mass function in starburst galaxies with different metallicity.
PDF
M. Rubio
241
CO in the Magellanic Clouds.
PDF
J. I. Harnett, N. Loiseau, H. P. Reuter
245
12CO(1-0) observations of barred galaxies with intense FIR emission.
PDF
M. Rubio, M. Roth, M. Tapia
249
IR images of N159 in the LMC.
PDF
F. Sala
251
Analytic Time Depending Galaxy Models
PDF
P. Cortés, F. Sala
255
A contribution to the study of the structure of the Galaxy.
PDF
P. Cortes, F. Sala
259
Orbits of Stars in a Model with Three First Integrals
PDF
C. M. Diara, W. J. Maciel
264
Determination of the Galactic Rotation Curve Based on Planetary Nebulae
PDF
C. Cappa de Nicolau, C. A. Olano
269
H I distribution in the region of the Lac OB1 association.
PDF
W. G. L. Poppel, P. Marronetti, P. Benagalia
273
Distribution of the Atomic Component in the Local Interstellar Medium. the Warm Neutral Intercloud Medium (wnm).
PDF
R. Teixeira, P. Benevides-Soares, Y. Requieme, M. Rapaport
278
Reduction of Meridian Observations by the Overlap Method
PDF
O. Cardona, M. Corona-Galindo
281
The Method of Eichhorn with Non-Standard Projections for a Single Plate
PDF
J. L. Hormaechea, R. Perdomo
286
Second Rio Grande catalogue (RG2).
PDF
L. B. F. Clauzet, P. Benevides-Soares, S. Débarbat, F. Chollet
291
Astrolabe 45° zenith distance observations of α Sco A.
PDF
R. Perdomo, E. Nievas, J. L. Hormaechea
293
An FK5 analysis from RG1 Astrolabe Catalogue.
PDF
V. A. F. Martin, L. B. F. Clauzet
297
Colour and Magnitude Function for Absolute Declination in Astrolabe Data
PDF
W. J. Schuster
300
Uvby-B Photometry of High Velocity Stars. Photometric Parallaxes and Preliminary Kinematic Results
PDF
H. Tignanelli, R. A. Vazquez, C. Mostaccio, S. Gordillo, A. Feinstein, A. Plastino
305
Numerical taxonomy for open clusters.
PDF
C. Xiaojun, O. T. Matsuura
309
Rotational Evolution and Magnetic Field of AP Stars
PDF
R. Opher, A. Valio
314
Subjeans Condensations due to a Thermal Instability
PDF
J. Klapp, M. G. Corona-Galindo
317
Pulsation, Mass Loss and the Upper Mass Limit
PDF
J. C. N. de Araujo, R. Opher
322
The Evolution of Population III Objects
PDF
O. G. Benvenuto, J. E. Horvath
325
Strange Stars, Neutron Stars and Pulsar Emission
PDF
F. J. Jablonski
329
Search for photometric pulsations from SN 1987A.
PDF
O. G. Benvenuto, J. E. Horvath
331
Strange matter, detonations and SN 1987A.
PDF
S. O. Kepler
335
Structure and evolution of white dwarfs.
PDF
R. A. Vázquez, A. Feinstein
346
Initial masses of WR stars in open clusters.
PDF
J. J. Clariá, E. Lapasset, D. Minniti
351
Estructura del diagrama HR para gigantes rojas de poblacion I de masas intermedias.
PDF
J. C. Gregorio-Hetem, J. R. D. Lépine, R. P. Ortiz
356
The luminosity function of the stars embedded in the Chamaeleon I and in the Rho Ophiuchi molecular clouds.
PDF
M. Alvarez, J. A. Belmonte, M. Chevreton, N. Dolez, T. Roca Cortes, M. Auvergne, A. Mangeney, M. J. Goupil, E. Michel
361
Stellar Seismology from Photometric Measurements
PDF
A. Kanaan, S. O. Kepler
365
An analysis of the light curve of the ZZ Ceti star G117-B15A.
PDF
M. P. Diaz, J. E. Steiner
369
Photometry of nova Muscae 1983.
PDF
A. Feinstein
373
Be stars in open clusters.
PDF
M. Gómez, E. Lapasset, J. Ahumada, R. Fariñas
376
Analisis de curvas de luz de binarias de contacto.
PDF
J. M. García, L. P. R. Vaz, A. Giménez
381
A study of the Algol-type binary AS Velorum using Strömgren four-colour photometry.
PDF
J. M. García, A. Giménez, A. Claret
382
Photometric analysis of the semidetached binary system S Velorum.
PDF
R. Baptista, F. J. Jablonski, J. E. Steiner
383
The eclipsing cataclysmic variable NSV 12615 (V4041 Sgr).
PDF
E. Rodriguez, A. Rolland, P. López de Coca, R. Garrido, E. Garcia-Lobo
386
Internal consistency test about δm1 metallicity index for SX Phe and high amplitude δ Sct stars.
PDF
A. Claret, E. Rodriguez, J. M. Garcia
389
Comparison between standard evolution models for high amplitude δ Sct stars.
PDF
M. Alvarez, J. P. Sareyan, R. Michel
391
Short period variations of LQ And.
PDF
J. R. Garcia, R. Cebral, F. Digiorgio, D. Magaldi, P. Romano, E. R. Scoccimarro, P. Wahnon, M. Zimmermann
395
On the distinction between δ Scuti and SX Phoenicis variable stars.
PDF
M. Alvarez, A. -M. Hubert-Delplace, J. Arsenijevic, D. Ballereau, J. Chauville
398
Long and short period variations of some Be stars.
PDF
S. González-Bedolla
401
Photometric observations of short period variable stars.
PDF
B. Barbuy, M. -N. Perrin, R. Cayrel
406
Derivation of stellar parameters using a grid of synthetic spectra.
PDF
M. M. Erdelyi, B. Barbuy
409
Synthetic CA II Triplet Lines
PDF
S. Lorenz-Manins, S. J. C. Landabeny
413
Envelopes of Peculiar Late Type Stars
PDF
O., Jr. Giovannini, S. O. Kepler, A. Kanaan
417
Determination of radial velocity variations in the Ap star HR 1217.
PDF
S. A. Gonçalves, E. J. Pacheco
421
The behaviour of Ca II lines of giants and supergiants in the light of stellar winds.
PDF
G. Leguísamo, A. Garat
424
Spectroscopic analysis of 48 Lib in the ultraviolet range.
PDF
R. Baptista, J. E. Steiner
429
Accretion disk image reconstruction in cataclysmic variables.
PDF
J. B. G. Canalle, R. Opher
433
The accretion column of DQ Herculis binaries.
PDF
J. Felsteiner, R. Opher
437
X-ray spectrum from the accretion columns of magnetic white dwarfs.
PDF
F. X. Arauxo
440
Nonspherical Radiation Driven Wind Models Applied to Be Stars
PDF
V. Jatenco-Pereira, R. Opher
445
Mass Ejection from Old and Young Stars and the Sun
PDF
J. A. de Freitas Pacheco, D. dell'Aglio, R. da Costa
449
Nova Centauri 1986 - a spectroscopic study.
PDF
M. J. Sartori, R. de La Reza
450
The Hα line initial evolution in the SN 1987A.
PDF
N. Figueiredo, T. Villela, U. B. Jayanthi, C. A. Wuensche, J. A. C. F. Neri, R. C. Cesta
459
Gamma-ray observations of SN 1987A.
PDF
R. Aquilano, M. Castagnino, L. Lara
463
Quasi-periodic oscillations in X-ray bursters.
PDF
E. Janot-Pacheco
467
On the hard, pulsating X-ray transients.
PDF
L. A. L. da Silva
471
The classification of SN 1987A.
PDF
E. de Gouveia dal Pino, R. Opher
477
A Possible Origin of the H-H Objects in Young Stellar Outflows
PDF
B. Sestokas Filho, E., Jr. Scalise
481
Monitoring of water masers from IRAS sources.
PDF
J. C. Gregório-Hetem, J. R. D. Lépine, R. P. Ortiz, B. Sestokas Filho
486
A search for water masers associated with Herbig-Haro objects.
PDF
S. C. F. Rossi, P. Benevides-Soares, B. Barbuy
489
Grain Growth in Collapsing Clouds
PDF
A. Gómez Balboa, E., Jr. Scalise
494
Results of recent studies of the temporal variability of silicon monoxide masers.
PDF
A. A. de Almeida
499
Possible OH+ submillimeter emission in Orion-KL.
PDF
R. Opher
504
Radio Brightness Temperatures and Angular Dimensions of Recently Predicted Vl-Bi Small-Scale Structures
PDF
N. S. P. Sabalisck, Z. Abraham
507
Studies at high frequencies of the 30 Doradus and RCW 57 regions.
PDF
L. H. Amaral, Z. Abraham
511
Radio map of the region G331.5-0.1 at 22 GHz.
PDF
J. A. de Freitas Pacheco, R. Dell'Aglio Dias da Costa, S. J. Codina-Landaberry
515
The peculiar object He2-104.
PDF
W. J. Maciel, J. A. de Freitas Pacheco, S. J. Codina-Landaberry
517
Strongly metal deficient planetary nebulae.
PDF
E. M. de Gouveia Dal Pino, R. Opher
521
The origin of the filaments in the Crab Nebula.
PDF
M. G. Rovira
525
Actividad Solar Desde EL Espacio
PDF
V. Jatenco-Pereira, R. S. Steinolfson, S. Mahajan, T. Tajima
538
Nonlinear Propagation of Mag Waves Through the Transition Region
PDF
A. C. L. Chian
541
Nonthermal Radiation Processes in Interplanetary Plasmas
PDF
C. A. de Azevedo, A. S. de Assis
545
Global Alfven Waves in Solar Physics: Coronal Heating
PDF
C. S. Barth, S. H. B. Livi
549
Magnetic Bipoles in Emerging Flux Regions on the Sun
PDF
H. S. Sawant, J. R. Cecatto
552
Fine Structure in the Mm-Wavelength Spectra of the Active Region
PDF
R. H. Trevisan, H. S. Sawant, B. Kalman, L. Gesztelyi
557
Homologous and Homologous like Microwave Solar Radio Bursts
PDF
H. S. Sawant, C. J. B. Lattari, A. O. Benz, B. R. Dennis
562
Time Delays Between Decimetric Type-Iii Bursts and Associated Hard X-Rays
PDF
N. V. Leister
567
Solar Diameter Measurements
PDF
S. Ferraz-Mello
569
Regular Motions of Resonant Asteroids
PDF
A. Brunini
581
On the Determination of Perturbations in Planetary Motions
PDF
M. Tsuchida
585
Libration Motion of Asteroid (279) Thule
PDF
J. Licandro, T. Gallardo, G. Tancredi
590
Photometric Observations of Asteroids 31 Euphrosyne, 118 Peito, 13 Egeria, 196 Philomena, and 471 Papagena
PDF
R. Gil-Hutton
593
Photoelectric Photometry of Asteroid 100 Hekate
PDF
A. Brunini
597
Dynamical Study of the Galactic Influence on the A(orig) Distribution of the Long Period Comets
PDF
S. Gordillo, C. Mostaccio, R. B. Orellana, A. Plastino, H. Tignanelli, H. Vucetich
601
On Searching for Asteroid Families I. Hirayama Families
PDF
A. M. Silva, I. F. Mirabel
604
Produccion Gaseosa del Cometa Halley: Erupciones Y Fotodisociacion del Radical OH
PDF
O. T. Matsuura, M. R. Voelzke
609
Halley at Opposition
PDF
C. Mendoza
613
Physical and Chemical Processes Opacity Project: an Overview and Some Preliminary Results
PDF
J. C. Carvalho
624
Kinematic Dynamo Action in the Presence of a Large Scale Velocity
PDF
G. A. Medina-Tanco, R. Opher
629
Non-Linear Effects of Self Generated Alfven Waves in Oblique Shocks and Cosmic Ray Acceleration Efficiency
PDF
J. Braga, C. E. Covault, R. Manandhar, J. E. Grindlay
633
Hard X-ray arcmin imaging with the EXITE telescope.
PDF
O. Cardona, L. Furenlid, A. Cornejo
638
Construction and Tests of an Ebert-Fastie Spectrograph with Optical Fibers
PDF
E. A. Carrara, Z. Abraham
643
Design of VLBI Array in South America
PDF
J. R. D. Lepine, J. C. Raffaelli
648
The University of SAO Paulo 2.4 Meter Millimetric Antenna
PDF
H. S. Sawant, R. R. Rosa
651
High Sensitivity, High Frequency and High Time Resolution Decimetric Spectroscope
PDF
N. Beraldo, E., Jr. Scalise, J. R. D. Lepine
655
The Acousto-Optic Spectrometer of the 2.4M Iag-Usp Radio Telescope
PDF
J. R. D. Lepine, C. Gneiding, R. Laporte, A. O. Dias, N. Epchtein
659
A Near-Infrared Photometer for the Laboratorio Nacional de Astrofisica
PDF
H. Barroso Dos Reis, S. J. Codina-Landaberry
662-666
A concave grating Cassegrain spectrograph project.
H. B. Dos Reis, S. J. Codina-Landaberry
662
A Concave Grating Cassegrain Spectrograph Project
PDF
A. A. Archarov, V. V. Novikov, K. V. Rumyantsev, D. D. Polojentsev, H. I. Potter, L. I. Yagudin, J. A. Zelaya, R. F. Zalles
667
The Soviet-Bolivian Astronomical Observatory in Tarija, Plans and Some Results of Investigations
PDF
H. G. Marraco
669
The la Plata Astronomical Data Center
PDF
H. L. Tignanelli, R. A. Vazquez, C. Mostaccio, S. Gordillo, A. Plastino
674
Homogeneity and Entropy
PDF
J. A. C. F. Neri, U. B. Jayanthi, A. M. R. Alves
677
Sistema de Gravacao Dados Digitais
PDF
M. A. Bosio
681
Image Processing Software
PDF
H. Moreno
683
Chilean Astronomers and the Birth of Cerro Tololo
PDF
H. L. Tignanelli
687
Ensenanza de la Astronomia a Traves de Metodos no Tradicionales
PDF
Marcos Rincon Voelzke, Oscar T. Matsuura
746-746
Parabolic Envelopes in Comet Halley
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