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Avatar for Anastasios Tzanidakis Anastasios Tzanidakis
April 25, 2019
Science
30
0

Mapping Galactic Oscillations with M Giants in Gaia DR2

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

Avatar for Anastasios Tzanidakis

Anastasios Tzanidakis

April 25, 2019

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Transcript

  1. Andy Tzanidakis, Kathryn Johnston, Adrian Price-Whelan, Allyson Sheffield, Chervin Laporte

    Mapping Galactic Oscillations with M Giants in Gaia DR2 [email protected] \\ @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!