Binary Stars

1
Binary Stars

• Optical Doubles
• Visual Binaries
• Spectroscopic Binaries
• Eclipsing Binaries

2
Whats the difference?
Optical Double
Visual Binary
3
Whats the difference?
Spectroscopic Binary
Eclipsing Binary
4
Spectroscopic Binary
5
Eclipsing Binary Star
Light Curve
Magnitude
Time
6
The Geometry of an Eclipse
7
A Simple Model

• Assumptions
• Spherical Stars
• No Limb Darkening
• Outcomes
• Orbital Inclination and Period
• Relative Sizes and Brightness

8
(No Transcript)
9
(No Transcript)
10
(No Transcript)