1 INTRODUCTION
2 SYNTHETIC POPULATION MODEL
2.1 Binary Fraction
2.2 Initial Primary Mass
2.3 Initial Mass Ratio
2.4 Initial Semi Major Axis
2.5 Initial Eccentricity
2.6 Position in the Galaxy
2.7 Relic Mass
2.8 Age and Lifetime
2.9 Main Sequence Stellar Radii
2.10 Apparent Magnitude and Extinction
2.11 Binary Evolution
2.12 Natal Kicks
3 DETECTION CRITERIA
3.1 Physical Constraints
3.2 Hipparcos
3.3 Gaia
4 RESULTS
4.1 Black Holes
4.2 Neutron Stars
5 CONCLUSIONS