Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993rmxaa..25...39a&link_type=abstract
Revista Mexicana de Astronomia y Astrofisica, 25, 39-50 (1993)
Astronomy and Astrophysics
Astronomy
21
Scientific paper
RESUMEN Se han calculado numericamente las 6rbitas galacticas de seis cumulos globulares empleando determinaciones recientes de sus movimientos propios absolutos en dos modelos para la distribuci6n de masa galactica; ambos modelos proporcionan una buena representaci6n de la curva de rotaci6n observada en la regi6n comprendida entre 1 y 15 kpc, y una curva plana hasta 100 kpc. Tambien se han recalculado las 6rbitas de tres cumulos para los cuales se han obtenido recientemente valores mejorados de sus distancias y movimientos propios absolutos. Con las distancias pericentricas resultantes de las 6rbitas integradas se han calculado los radios de marea esperados y se comparan 6stos con los valores observacionales. Se eva lu an los efectos de los errores de observaci6n sobre los parametros orbitales de los cumulos, y sobre sus radios de marea. Tambien se estudian las diferencias encontradas entre los resultados con los dos moddos para el potencial galactico empleados. ABSTRACT The galactic orbits of six globular clusters have been numerically calculated in two different models for the galactic mass distribution, using recently determined absolute proper motions; both models give a good representation of the observed rotation curve in the region 1 to 15 kpc and a flat rotation curve out to 100 kpc. The orbits of three additional clusters with recent improved determinations of their distances and absolute proper motions have also been recalculated. With the pericentric distances resulting from the computed orbits, cluster tidal radii are determined, and these are compared with the observational values. The effects of observational errors upon the computed orbital parameters and tidal radii are evaluated. The differences found with both galactic models are also studied. Key words: CLUSThRS-DYNAMICS - GALAXY- UCTURE
Allen Christine
Santillan Alfredo
No associations
LandOfFree
New galactic orbits and tidal radii for globular clusters. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with New galactic orbits and tidal radii for globular clusters., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New galactic orbits and tidal radii for globular clusters. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1374887