Exploring the Origin of Thick Disks Using the NewHorizon and Galactica Simulations

  title={Exploring the Origin of Thick Disks Using the NewHorizon and Galactica Simulations},
  author={Minjung Park and Sukyoung K. Yi and S{\'e}bastien Peirani and Christophe Pichon and Yohan Dubois and Hoseung Choi and Julien Devriendt and Sugata Kaviraj and Taysun Kimm and Katarina Kraljic and Marta Volonteri},
  journal={The Astrophysical Journal Supplement Series},
Ever since a thick disk was proposed to explain the vertical distribution of the Milky Way disk stars, its origin has been a recurrent question. We aim to answer this question by inspecting 19 disk galaxies with stellar mass greater than 1010 M ⊙ in recent cosmological high-resolution zoom-in simulations: galactica and NewHorizon. The thin and thick disks are reasonably reproduced by the simulations with scale heights and luminosity ratios as observed. We then spatially classify the thin and… 

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