1999ApJ...522..793S

Query : 1999ApJ...522..793S

1999ApJ...522..793S - Astrophys. J., 522, 793-801 (1999/September-2)

ΩB and Ω0 from MACHOs and Local Group dynamics.

STEIGMAN G. and TKACHEV I.

Abstract (from CDS):

We obtain restrictions on the universal baryon fraction, fB≡ΩB/Ω0, by assuming that the observed microlensing events toward the Large Magellanic Cloud are due to baryonic MACHOs in the halo of the Galaxy and by extracting a bound to the total mass of the Milky Way from the motion of tracer galaxies in the Local Group. We find a lower bound fB>0.29+0.18–0.15. Consistency with the predictions of primordial nucleosynthesis leads to the further constraint on the total mass density, Ω0≲0.2.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Theory - Cosmology: Dark Matter - Cosmology: Gravitational Lensing - Galaxies: Local Group - Galaxies: Magellanic Clouds

Simbad objects: 13

goto Full paper

goto View the references in ADS

Number of rows : 13
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 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
3 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
4 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
5 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
6 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
7 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
8 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
9 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
10 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
11 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
12 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
13 NAME Local Group GrG ~ ~           ~ 9325 0

To bookmark this query, right click on this link: simbad:objects in 1999ApJ...522..793S and select 'bookmark this link' or equivalent in the popup menu