Mapping Galactic Oscillations with M Giants in Gaia DR2

Final presentation for senior thesis research project at Columbia University, New York.

Transcript

1. Andy Tzanidakis, Kathryn Johnston, Adrian Price-Whelan, Allyson Sheffield, Chervin Laporte Mapping Galactic Oscillations with M Giants in Gaia DR2 at3156@columbia.edu \\ @Andy_Tzanidakis \\ GitHub: AndyTza
2. Why Study the Galactic Anticenter? Source: Colin Slater et al. PanSTARSS1 5-6 kpc 7-11 kpc >14 kpc
3. Why Study the Galactic Anticenter? Source: Colin Slater et al. PanSTARSS1 5-6 kpc 7-11 kpc >14 kpc Sagittarius dSph
4. Why Study the Galactic Anticenter? Source: Colin Slater et al. PanSTARSS1 5-6 kpc 7-11 kpc >14 kpc
5. Why Study the Galactic Anticenter? Source: Colin Slater et al. PanSTARSS1 5-6 kpc 7-11 kpc >14 kpc Monoceros Ring (Mon.) Trianglum-Andromeda (TriAnd)
6. dSph perturbing the Galactic Disk Sheffield, Price-Wheelan, Tzanidakis et al. 2018 Mon.
7. Source: A. Tzanidakis, C.F. Laporte et al. 2018 Sagittarius dSph Perturbing Galactic Disk
8. Source: Sheffield et al. 2014 (1407.4463) M Giant Overdensities in the Milky Way
9. Source: Sheffield et al. 2014 (1407.4463) M Giant Overdensities in the Milky Way M Giants can traced to very large distances!
10. Source: Sheffield et al. 2014 (1407.4463) M Giant Overdensities in the Milky Way M Giants can traced to very large distances! They also trace inherently metal rich regions of the galaxy
11. Gaia DR2 and Galactic Archeology
12. So why is Gaia DR2 good anyways? Gaia DR2 and Galactic Archeology
13. So why is Gaia DR2 good anyways? 1.3 billion sources with position, parallax and proper motion! Gaia DR2 and Galactic Archeology
14. So why is Gaia DR2 good anyways? Confident <2 kpc distances with parallax 1.3 billion sources with position, parallax and proper motion! Gaia DR2 and Galactic Archeology
15. Data: 2MASS, Gaia DR2, Sanders et al. 2018 Deriving Distances Beyond local 2 kpc
16. Low [Fe/H] H igh [Fe/H ] Deriving Distances Beyond local 2 kpc Data: 2MASS, Gaia DR2, Sanders et al. 2018
17. Distance Modulus Density 1 Gyr 5.67 Gyr
18. 1 Gyr 5.67 Gyr Distance Modulus Density
19. North-South Asymmetry in Stellar Count Maps
20. 0 [deg] 35 [deg] -35 [deg] 0 [deg] Mon. TriAnd
21. 0 [deg] 35 [deg] -35 [deg] 0 [deg]
22. Source: Tzanidakis, Laporte et al. 2018 Thank you!