1. A Census of Young Binary Stars and their Properties
Kendra Kellogg
Northern Arizona University
Dr. Lisa Prato
Lowell Observatory

2. Introduction Our goal: My job:
To explore and better understand the properties of circumstellar disks in T Tauri binary systems
My job:
To organize and update a database containing these data and analyze them

3. Why young binaries?
Most young stars are found in binary systems; sometimes triple or quadruple systems
Young stars still have most of their disks
starfieldobservatory.com

4. Why disks?
nasa.gov
spaceandtechnology.com
Circumstellar or circumbinary disks are the beginnings of coalesced planetary systems like our own solar system

5. Data and analysis Used data from published papers
Used IDL (Interactive Data Language)‏ for the analysis

6. Old Database

7. New Database

8. What are K, L and K-L? K (2.2μm)‏ L (3.4μm)‏
K-L colors show presence of dusty disk
Furlan et al. 2006

9. Usage of Database
Compared K-L colors of selected stars to the K-L colors from other data sets of the same stars
Stars below 0.4 mag do not have disks and those above do have disks (Edwards et al. 1993)‏

10. Conclusions
Results show that star systems and circumstellar disks change over time
Padgett et al. 1999

11. Acknowlegements I would like to thank: Any Questions?
Mentor - Dr. Lisa Prato
Space Grant Director - Dr. Nadine Barlow
NASA Space Grant
Any Questions?