Spiral galaxy bulges
We study the spin-up of primordial bulges due to the interaction with bars, using N-body simulations to follow the growth of the bar and the formation of a box/peanut bulge. We compare the resulting composite bulges with observations of nearby spiral galaxies.
Main Topics
Publications
Blaña Díaz, M., Gerhard, O., Wegg, C., Portail, M., Opitsch, M., Saglia, R., et al., 2018, MNRAS, 481, 3210,
Sculpting Andromeda - made-to-measure models for M31's bar and composite bulge: dynamics, stellar and dark matter mass. 2018MNRAS.481.3210B
Blaña Díaz M., Wegg C., Gerhard O., Erwin P., Portail M., Opitsch M., Saglia R., Bender, R., 2017, MNRAS, 466, 4279
Andromeda chained to the Box - Dynamical Models for M31: Bulge & Bar eprint arXiv:1612.02319
Saha, K., Gerhard, O., Martinez-Valpuesta, I., 2016, A&A, 588, A42
Spin-up of massive classical bulges during secular evolution. 2016MNRAS.463L..41B
Saha, K., Gerhard, O., 2013, MNRAS, 430, 2039,
Secular evolution and cylindrical rotation in boxy/peanut bulges: impact of initially rotating classical bulges. 2013MNRAS.430.2039S
Saha, K., Martinez-Valpuesta, I., Gerhard, O., 2012, MNRAS, 421, 333,
Spin-up of low-mass classical bulges in barred galaxies. 2012MNRAS.421..333S