The polar stellar ring and dark halo of NGC 5907

Citation
Vp. Reshetnikov et Ny. Sotnikova, The polar stellar ring and dark halo of NGC 5907, ASTRON LETT, 26(5), 2000, pp. 277-284
Citations number
33
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS
ISSN journal
10637737 → ACNP
Volume
26
Issue
5
Year of publication
2000
Pages
277 - 284
Database
ISI
SICI code
1063-7737(200005)26:5<277:TPSRAD>2.0.ZU;2-C
Abstract
Numerical simulations of the disruption of a dwarf companion moving in the polar plane of a massive galaxy are presented. The constructed model is com pared with observational data on the recently discovered low-surface-bright ness stellar ring around the galaxy NGC 5907. Constraints on the ring lifet ime (less than or equal to 1.5 Gyr after the first approach of the galaxies ), on the structure of the companion-the ring precursor, and on the mass of the dark halo of the main galaxy in whose gravitational field the companio n moves are provided. The dark-halo mass within 50 kpc of the NGC 5907 cent er cannot exceed 3 or 4 "visible" masses. (C) 2000 MAIK "Nauka/Interperiodi ca".