Search Results - "Fragkoudi, Francesca"

Gas accretion and galactic fountain flows in the Auriga cosmological simulations: angular momentum and metal redistribution by Grand, Robert J J, van de Voort, Freeke, Zjupa, Jolanta, Fragkoudi, Francesca, Gómez, Facundo A, Kauffmann, Guinevere, Marinacci, Federico, Pakmor, Rüdiger, Springel, Volker, White, Simon D M

“…ABSTRACT Using a set of 15 high-resolution magnetohydrodynamic cosmological simulations of Milky Way formation, we investigate the origin of the baryonic…”
Get full text

Identifying resonances of the Galactic bar in Gaia DR2: I. Clues from action space by Trick, Wilma H, Fragkoudi, Francesca, Hunt, Jason A S, Mackereth, J Ted, White, Simon D M

“…ABSTRACT Action space synthesizes the orbital information of stars and is well suited to analyse the rich kinematic substructure of the disc in the second Gaia…”
Get full text

A dynamical mechanism for the origin of nuclear rings by Sormani, Mattia C, Sobacchi, Emanuele, Fragkoudi, Francesca, Ridley, Matthew, Treß, Robin G, Glover, Simon C O, Klessen, Ralf S

“…We develop a dynamical theory for the origin of nuclear rings in barred galaxies. In analogy with the standard theory of accretion discs, our theory is based…”
Get full text

Insights into the Galactic Bulge Chemodynamical Properties from Gaia Data Release 3 by Liao, Xiaojie, Li, Zhao-Yu, Simion, Iulia, Shen, Juntai, Grand, Robert, Fragkoudi, Francesca, Marinacci, Federico

“…Abstract We explore the chemodynamical properties of the Galaxy in the azimuthal velocity V ϕ and metallicity [Fe/H] space using red giant stars from Gaia Data…”
Get full text

Impacts of Bar-driven Shear and Shocks on Star Formation by Kim, Taehyun, Gadotti, Dimitri A., Querejeta, Miguel, Pérez, Isabel, Zurita, Almudena, Neumann, Justus, van de Ven, Glenn, Méndez-Abreu, Jairo, de Lorenzo-Cáceres, Adriana, Sánchez-Blázquez, Patricia, Fragkoudi, Francesca, Martins, Lucimara P., Silva-Lima, Luiz A., Kim, Woong-Tae, Park, Myeong-Gu

“…Abstract Bars drive gas inflow. As the gas flows inward, shocks and shear occur along the bar dust lanes. Such shocks and shear can affect the star formation…”
Get full text

The outer low-α disc of the Milky Way – I: evidence for the first pericentric passage of Sagittarius? by Das, Payel, Huang, Yang, Ciucă, Ioana, Fragkoudi, Francesca

“…ABSTRACT Phase-space data, chemistry, and ages together reveal a complex structure in the outer low-α disc of the Milky Way. The age-vertical velocity…”
Get full text

The dual origin of the Galactic thick disc and halo from the gas-rich Gaia–Enceladus Sausage merger by Grand, Robert J J, Kawata, Daisuke, Belokurov, Vasily, Deason, Alis J, Fattahi, Azadeh, Fragkoudi, Francesca, Gómez, Facundo A, Marinacci, Federico, Pakmor, Rüdiger

“…ABSTRACT We analyse a set of cosmological magnetohydrodynamic simulations of the formation of Milky Way-mass galaxies identified to have a prominent radially…”
Get full text

Evidence from APOGEE for the presence of a major building block of the halo buried in the inner Galaxy by Horta, Danny, Schiavon, Ricardo P, Mackereth, J Ted, Pfeffer, Joel, Mason, Andrew C, Kisku, Shobhit, Fragkoudi, Francesca, Allende Prieto, Carlos, Cunha, Katia, Hasselquist, Sten, Holtzman, Jon, Majewski, Steven R, Nataf, David, O’Connell, Robert W, Schultheis, Mathias, Smith, Verne V

“…ABSTRACT We report evidence from APOGEE for the presence of a new metal-poor stellar structure located within ∼4 kpc of the Galactic Centre. Characterized by a…”
Get full text

Chemodynamical Signatures of Bar Resonances in the Galactic Disk: Current Data and Future Prospects by Wheeler, Adam, Abril-Cabezas, Irene, Trick, Wilma H., Fragkoudi, Francesca, Ness, Melissa

“…Abstract The Galactic disk exhibits complex chemical and dynamical substructure thought to be induced by the bar, spiral arms, and satellites. Here, we explore…”
Get full text

Did the Gaia Enceladus/Sausage merger form the Milky Way’s bar? by Merrow, Alex, Grand, Robert J J, Fragkoudi, Francesca, Martig, Marie

“…ABSTRACT The Milky Way’s last significant merger, the Gaia Enceladus/Sausage (GES), is thought to have taken place between $8\hbox{ and }11\, \mathrm{Gyr}$…”
Get full text

SDSS-IV MaNGA: The link between bars and the early cessation of star formation in spiral galaxies by Fraser-McKelvie, Amelia, Merrifield, Michael, Aragón-Salamanca, Alfonso, Peterken, Thomas, Kraljic, Katarina, Masters, Karen, Stark, David, Fragkoudi, Francesca, Smethurst, Rebecca, Fraser Boardman, Nicholas, Drory, Niv, Lane, Richard R

“…ABSTRACT Bars are common in low-redshift disc galaxies, and hence quantifying their influence on their host is of importance to the field of galaxy evolution…”
Get full text

Time Inference with MUSE in Extragalactic Rings (TIMER): properties of the survey and high-level data products by Gadotti, Dimitri A, Sánchez-Blázquez, Patricia, Falcón-Barroso, Jesús, Husemann, Bernd, Seidel, Marja K, Pérez, Isabel, de Lorenzo-Cáceres, Adriana, Martinez-Valpuesta, Inma, Fragkoudi, Francesca, Leung, Gigi, van de Ven, Glenn, Leaman, Ryan, Coelho, Paula, Martig, Marie, Kim, Taehyun, Neumann, Justus, Querejeta, Miguel

Get full text

Overview and public data release of the augmented Auriga Project: cosmological simulations of dwarf and Milky Way-mass galaxies by Grand, Robert J J, Fragkoudi, Francesca, Gómez, Facundo A, Jenkins, Adrian, Marinacci, Federico, Pakmor, Rüdiger, Springel, Volker

“…ABSTRACT We present an extended suite of the Auriga cosmological gravo-magnetohydrodynamical ‘zoom-in’ simulations of 40 Milky Way-mass haloes and 26 dwarf…”
Get full text

The effects of AGN feedback on the structural and dynamical properties of Milky Way-mass galaxies in cosmological simulations by Irodotou, Dimitrios, Fragkoudi, Francesca, Pakmor, Ruediger, Grand, Robert J J, Gadotti, Dimitri A, Costa, Tiago, Springel, Volker, Gómez, Facundo A, Marinacci, Federico

“…ABSTRACT Feedback from active galactic nuclei (AGNs) has become established as a fundamental process in the evolution of the most massive galaxies. Its impact…”
Get full text

How many components? Quantifying the complexity of the metallicity distribution in the Milky Way bulge with APOGEE by Rojas-Arriagada, Alvaro, Zasowski, Gail, Schultheis, Mathias, Zoccali, Manuela, Hasselquist, Sten, Chiappini, Cristina, Cohen, Roger E, Cunha, Katia, Fernández-Trincado, José G, Fragkoudi, Francesca, García-Hernández, D A, Geisler, Doug, Gran, Felipe, Lian, Jianhui, Majewski, Steven, Minniti, Dante, Monachesi, Antonela, Nitschelm, Christian, Queiroz, Anna B A

“…ABSTRACT We use data of ∼13 000 stars from the Sloan Digital Sky Survey/Apache Point Observatory Galactic Evolution Experiment survey to study the shape of the…”
Get full text

Closing the gap: secular evolution of bar-induced dark gaps in the presence of thick discs by Ghosh, Soumavo, Gadotti, Dimitri A, Fragkoudi, Francesca, Nagpal, Vighnesh, Di Matteo, Paola, Cuomo, Virginia

“…ABSTRACT The presence of dark gaps, a preferential light deficit along the bar minor axis, is observationally well known. The properties of dark gaps are…”
Get full text

The prevalence of pseudo-bulges in the Auriga simulations by Gargiulo, Ignacio D, Monachesi, Antonela, Gómez, Facundo A, Grand, Robert J J, Marinacci, Federico, Pakmor, Rüdiger, White, Simon D M, Bell, Eric F, Fragkoudi, Francesca, Tissera, Patricia

“…ABSTRACT We study the galactic bulges in the Auriga simulations, a suite of 30 cosmological magneto-hydrodynamical zoom-in simulations of late-type galaxies in…”
Get full text

Chasing the impact of the Gaia-Sausage-Enceladus merger on the formation of the Milky Way thick disc by Ciucă, Ioana, Kawata, Daisuke, Ting, Yuan-Sen, Grand, Robert J J, Miglio, Andrea, Hayden, Michael, Baba, Junichi, Fragkoudi, Francesca, Monty, Stephanie, Buder, Sven, Freeman, Ken

“…ABSTRACT We employ our Bayesian Machine Learning framework BINGO (Bayesian INference for Galactic archaeOlogy) to obtain high-quality stellar age estimates for…”
Get full text

An ever-present Gaia snail shell triggered by a dark matter wake by Grand, Robert J J, Pakmor, Rüdiger, Fragkoudi, Francesca, Gómez, Facundo A, Trick, Wilma, Simpson, Christine M, van de Voort, Freeke, Bieri, Rebekka

“…ABSTRACT We utilize a novel numerical technique to model star formation in cosmological simulations of galaxy formation – called superstars – to simulate a…”
Get full text

Exploring the diversity and similarity of radially anisotropic Milky Way-like stellar haloes: implications for disrupted dwarf galaxy searches by Orkney, Matthew D A, Laporte, Chervin F P, Grand, Robert J J, Gómez, Facundo A, van de Voort, Freeke, Fattahi, Azadeh, Marinacci, Federico, Pakmor, Rüdiger, Fragkoudi, Francesca, Springel, Volker

“…ABSTRACT We investigate the properties of mergers comparable to the Gaia–Sausage–Enceladus (GSE) using cosmological hydrodynamical simulations of Milky…”
Get full text