Citation
C. Beichman et al., An Infrared Space Observatory upper limit to the low-mass star halo in theedge-on galaxy NGC 4565, ASTROPHYS J, 523(2), 1999, pp. 559-565
Citations number
40
Categorie Soggetti
Space Sciences
Journal title
ASTROPHYSICAL JOURNAL
ISSN journal
0004637X
→ ACNP
Volume
523
Issue
2
Year of publication
1999
Part
1
Pages
559 - 565
Database
ISI
SICI code
0004-637X(19991001)523:2<559:AISOUL>2.0.ZU;2-W
Abstract
We present deep ISOCAM observations taken at 4.5 mu m (LW1) in search of a
faint halo surrounding the edge-on spiral galaxy NGC 4565. Such a halo migh
t exist if the massive halo that is needed to explain the flat rotation cur
ve of this galaxy were attributable to a population of faint, red objects.
The upper limit, 5.4 kJy sr(-1) (3 sigma) at 20 kpc, reported here excludes
a halo consisting of late-M dwarfs distributed in a spherical halo but not
of lower luminosity brown dwarf stars.