|◉ Barred galaxies||◉ Stellar dynamics|
|◉ Dwarf spheroidal galaxies||◉ N-body simulations|
|◉ Star clusters||◉ Made-to-measure modelling|
|◉ Andromeda||◉ Hydrodynamics|
The following projects study the dynamics of local galaxies,
using for this models that reproduce high resolution observations.
These models also provide the mechanisms that drive the evolution of these systems.
Additionally, these models are used to produce mock observations,
providing predictions for future observations.
The approach of the dynamical modelling is with: orbital integrators (such as the new code DELOREAN), N-body codes with tree methods, particle-mesh methods, and Made-to-Measure modelling, whilst the hydrodynamical simulations are performed with grid codes such as Ramses, or SPH codes like Gadget3.
First Author Publications
14. Dwarfs in the Milky Way halo outer rim: first in-fall or backsplash satellites?
(Link Paper, accepted in MNRAS)
Blaña, Matias; Burkert, Andreas; Fellhauer, Michael; Schartmann, Marc; Alig, Christian
13. Sculpting Andromeda -- made-to-measure models for M31's bar and composite bulge: dynamics, stellar and dark matter mass. (Link Paper)
Blaña, M.; Gerhard, O.; Wegg, C.; Portail, M.; Opitsch, M.; Saglia, R.; Fabricius, M.; Erwin, P.; Bender R., 2018. MNRAS doi: 10.1093/mnras/sty2311 (Link)
12. Andromeda chained to the Box - Dynamical Models for M31: Bulge & Bar. (Link Paper)
Blaña, M.; Wegg, C.; Gerhard, O.; Erwin, P.; Portail, M.; Opitsch, M.; Saglia R.; Bender R., 2017. MNRAS.466.4279B
11. Life and death of a hero - lessons learned from modelling the dwarf spheroidal Hercules: an incorrect orbit? (Link Paper)
Blaña, M.; Fellhauer, M.; Smith, R.; Candlish, G. N.; Cohen, R.; Farias, J. P., 2015 MNRAS.446..144B
10. Leo IV and V - A possible dwarf galaxy pair? (Link Paper)
Blaña, M.; Fellhauer, M.; Smith, R., 2012 A&A...542A..61B
9. Leo IV and V - A possible dwarf galaxy pair? (Part II: a binary star clusters scenario). (Link Paper)
Blaña, M.; Fellhauer, M.; Smith, R., 2011 BAAA...54..397B
8. The survey of Planetary Nebulae in Andromeda (M31) II. Age-velocity dispersion relation in the disc from Planetary Nebulae
Souradeep Bhattacharya, Magda Arnaboldi, Nelson Caldwell, Ortwin Gerhard, Matías Blaña, Alan McConnachie, Johanna Hartke, Puragra Guhathakurta, Claudia Pulsoni, Kenneth C. Freeman, 2019 A&A
7. Stellar populations of the central region of M31 (Link Paper)
Saglia R.; Opitsch, M.; Fabricus, M.; Bender R.; Blaña, M.; Gerhard, O., 2018 A&A
6. Evidence for non-axisymmetry in M31 from wide-field kinematics of stars and gas (Link Paper)
Opitsch, M.; Fabricus, M.; Saglia R.; Bender R.; Blaña, M.; Gerhard, O., 2017 A&A.611A.38O
5. How fast is mass-segregation happening in hierarchical formed embedded star clusters? (Link Paper)
Domínguez, R.; Fellhauer, M.; Blaña, M.; Farias, J. P.; Dabringhausen, J., 2017 MNRAS.472..465D
4. Could Segue 1 be a destroyed star cluster? – a dynamical perspective (Link Paper)
Domínguez, R.; Fellhauer, M.; Blaña, M.; Farias, J. P.; Dabringhausen, J.; Candlish, G. N.; Smith, R.; Choque, N., 2016 MNRAS.461.3630D
3. The difficult early stages of embedded star clusters and the importance of the pre-gas expulsion virial ratio (Link Paper)
Farias, J. P.; Smith, R.; Fellhauer, M.; Goodwin, S.; Candlish, G. N.; Blaña, M.; Dominguez, R., 2015 MNRAS.450.2451
2. Ursa Major II - reproducing the observed properties through tidal disruption (Link Paper)
Smith, R.; Fellhauer, M.; Candlish, G. N.; Wojtak, R.; Farias, J. P.; Blaña, M., 2013 MNRAS.433.2529S
1. A possible formation scenario for dwarf spheroidal galaxies - II. A parameter study (Link Paper)
Assmann, P.; Fellhauer, M.; Wilkinson, M. I.; Smith, R.; Blaña, M., 2013 MNRAS.435.2391A
III. Dynamics of the bar and the bulge of the Andromeda galaxy (M31) (Doctoral Thesis)
(Link PDF [English])
II. Effects of the Initial Mass Function on the Infant Mortality of Embedded Star Clusters (Master Thesis) (Link PDF [English])
I. Life of a Hero –Hercules, Stream or Dwarf Galaxy? (Thesis Professional Astronomer Degree) (Link PDF [English])
I was born in the wonderful country of Chile, growing up in Osorno. Since I have memory I love dinosaurs (how not to, just see the amazing Triceratop's head in the picture). Later, I learned about much larger and amazing beasts: galaxies. I enrolled to study Physics and Astronomy at the
Universidad de Concepción in the Astronomy Department
in the Theory Group (Bachelor, Titulo and Master).
I obtained my doctoral degree at the Ludwig-Maximilians-Universität
(LMU) in München, Germany,
working at the Max Planck Institute for Extraterrestrial Physics
in the Dynamics Group.
Currently I am a postdoctoral researcher in the Physics of Galactic Nuclei group
at MPE, and part of the Computational Astrophysics group
at the Observatory of the LMU
My research background consists on using N-body simulations to study diverse stellar dynamical systems, such as disc galaxies, dwarf galaxies and star clusters, using different codes written in Fortran 90 and 77, C for the simulation, and performing the data analysis with Python, Supermongo, IDL, Mathematica, MATLAB, among others.
You may download my CV here.
Thanks for visiting my Homepage, and please feel free to contact me for any question,
writing me to email@example.com or using the form below.
Also, if you want to apply to fellowships or grants in Chile or Germany, but do not know how, I am happy to help; I successfully applied to the DAAD (doctorate), CONICYT (Master), Becas Chile (postdoc), and participated in the IMPRS program, acquiring experience in the German and Chilean academic systems.
Also, write me if you want to study astronomy as a career and you have questions on the daily duties of astronomers (you can also check a presentation here).