Breaks in the luminosity distribution
Luminosity functions in M83
Luminosity functions in M81
Breaks/features in the luminosity function may depend on:
ß Eddington limit for the neutron stars            distance indicator
ß ageing of the X-ray binary population (Wu 2001)
galactic history indicator
Handmade Software, Inc. Image Alchemy v1.11
CREATOR: XV Version 3.10a  Rev: 12/29/94 (PNG patch 1.2)  Quality = 75, Smoothing = 0
outside disk
CREATOR: XV Version 3.10a  Rev: 12/29/94 (PNG patch 1.2)  Quality = 100, Smoothing = 0
File written by Adobe Photoshop® 5.2

CREATOR: XV Version 3.10a  Rev: 12/29/94 (PNG patch 1.2)  Quality = 100, Smoothing = 0
outside disk
starburst nucleus