1999ApJ...523..559B

Query : 1999ApJ...523..559B

1999ApJ...523..559B - Astrophys. J., 523, 559-565 (1999/October-1)

An INFRARED SPACE OBSERVATORY upper limit to the low-mass star halo in the edge-on galaxy NGC 4565.

BEICHMAN C., HELOU G., VAN BUREN D., GANGA K. and DESERT F.X.

Abstract (from CDS):

We present deep ISOCAM observations taken at 4.5 µm (LW1) in search of a faint halo surrounding the edge-on spiral galaxy NGC 4565. Such a halo might exist if the massive halo that is needed to explain the flat rotation curve of this galaxy were attributable to a population of faint, red objects. The upper limit, 5.4 kJy.sr–1 (3 σ) 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.

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Journal keyword(s): Galaxies: Halos - galaxies: individual (NGC 4565) - Galaxies: Stellar Content - Infrared: Galaxies

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 4565 Sy2 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 991 0
2 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 807 0

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