New limits from microlensing on Galactic black holes in the mass range 10 M⊙ < M < 1000 M⊙

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Table 2.

Statistics of the EROS-2 and MACHO surveys.

	EROS-2 only	MACHO only	Common
Dates (month/yr)	7/96-2/03	7/92-1/00	7/92-2/03
T_obs (year)	6.7	7.7	10.6
N_objects(×10⁶)	15.8	6.9 ^(a)	14.1

Central fields

deg²	∼10	∼10	∼10
stars/arcmin²	∼70	∼100	∼70
Mag. lim. V_Cousins	∼20.5	∼20.5	∼20.5
# measurements B	500	1400	1900
# measurements R	600	1550	2150

Outer fields

deg²	∼77	∼39	∼39
stars/arcmin²	∼30	∼20	∼20
mag. lim. V_Cousins	∼22.5	∼21.5	∼21.5
# measurements B	250	200	450
# measurements R	300	250	550

Notes.

^(a)

Showing survey durations, the number of monitored sources, the median stellar densities, approximate limiting magnitudes, and median numbers of flux measurements per object after cleaning. Number of unique objects.

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