NGC-5907 REVISITED - A STELLAR HALO FORMED BY CANNIBALISM

Authors
LEQUEUX J COMBES F DANTELFORT M CUILLANDRE JC FORT B MELLIER Y
Citation
J. Lequeux et al., NGC-5907 REVISITED - A STELLAR HALO FORMED BY CANNIBALISM, Astronomy and astrophysics, 334(1), 1998, pp. 9-12
Citations number
13
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
334
Issue
1
Year of publication
1998
Pages
9 - 12
Database
ISI
SICI code
0004-6361(1998)334:1<9:NR-ASH>2.0.ZU;2-D
Abstract
We report on further observations of the luminous halo of NGC 5907. Ne w V, I and B deep photometry confirms the existence of an extended ste llar halo redder than the disk. Our data are consistent with a faint h alo, or very thick disk, composed of a metal-rich old stellar populati on. We propose that it could be the remnant of a merged small elliptic al, and we support our hypothesis with N-body simulations.