1. Introduction

2. Description of Pan-STARRS1 data and sample selection

3. Method
3.1. Data processing and radial profile extraction
3.2. Deriving the stellar mass: SED fitting

4. The 2D stack images
4.1. Motivation
4.2. Stack method and the stack images
4.3. Evidence of the stellar halo

5. Composite radial profiles: the generic shapes of 1D profiles

6. Properties of Individual Galaxies
6.1. The break-finding algorithm
6.2. The slope-ratio R (in light and mass) and its correlation with other physical parameters
6.3. M/L radial profiles

7. Discussion
7.1. Comparison to Previous Studies
7.2. Implications for outer disk formation

8. Summary