no code implementations • 15 Dec 2020 • Rubén Sánchez-Janssen, Francois Hammer, Simon Morris, Jean-Gabriel Cuby, Lex Kaper, Matthias Steinmetz, Jose Afonso, Beatriz Barbuy, Edwin Bergin, Alexis Finoguenov, Jesús Gallego, Susan Kassin, Christopher Miller, Goran Östlin, Laura Pentericci, Daniel Schaerer, Bodo Ziegler, Fanny Chemla, Gavin Dalton, Fatima De Frondat, Chris Evans, David Le Mignant, Mathieu Puech, Myriam Rodrigues, Sylvestre Taburet, Lidia Tasca, Yanbin Yang, Sandrine Zanchetta, Timothy Butterley, Jean-Marc Conan, Kjetil Dohlen, Marc Dubbeldam, Kacem El Hadi, Annemieke Janssen, Thierry Fusco, Andreas Kelz, Marie Larrieu, Ian Lewis, Caroline Lim, Mike MacIntosh, Tim Morris, Ramon Navarro, Walter Seifert
MOSAIC is the planned multi-object spectrograph for the 39m Extremely Large Telescope (ELT).
Instrumentation and Methods for Astrophysics
no code implementations • 2 Sep 2020 • Marco Regis, Marco Taoso, Daniel Vaz, Jarle Brinchmann, Sebastiaan L. Zoutendijk, Nicolas Bouché, Matthias Steinmetz
We use MUSE spectroscopic observations of the dwarf spheroidal galaxy Leo T between 470 and 935 nm to search for radiative decays of axion like particles (ALPs).
Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies High Energy Physics - Phenomenology
no code implementations • 19 Nov 2015 • Alejandro Benítez-Llambay, Julio F. Navarro, Mario G. Abadi, Stefan Gottloeber, Gustavo Yepes, Yehuda Hoffman, Matthias Steinmetz
We argue that dwarf-dwarf mergers offer a plausible scenario for the formation of systems with multiple distinct populations and, more generally, for the origin of age and metallicity gradients in dwarf spheroidals.
Astrophysics of Galaxies
no code implementations • 21 May 2014 • Alejandro Benítez-Llambay, Julio F. Navarro, Mario G. Abadi, Stefan Gottloeber, Gustavo Yepes, Yehuda Hoffman, Matthias Steinmetz
We explore the impact of cosmic reionization on nearby isolated dwarf galaxies using a compilation of SFHs estimated from deep HST data and a cosmological hydrodynamical simulation of the Local Group.
Astrophysics of Galaxies
no code implementations • 5 Nov 2013 • David G. Algorry, Julio F. Navarro, Mario G. Abadi, Laura V. Sales, Matthias Steinmetz, Franziska Piontek
Counterrotating stars in disk galaxies are a puzzling dynamical feature whose origin has been ascribed to either satellite accretion events or to disk instabilities triggered by deviations from axisymmetry.
Cosmology and Nongalactic Astrophysics
no code implementations • 2 Nov 2012 • Alejandro Benitez-Llambay, Julio F. Navarro, Mario G. Abadi, Stefan Gottloeber, Gustavo Yepes, Yehuda Hoffman, Matthias Steinmetz
This "cosmic web stripping" may help to explain the scarcity of dwarf galaxies compared with the numerous low-mass halos expected in \Lambda CDM and the large diversity of star formation histories and morphologies characteristic of faint galaxies.
Cosmology and Nongalactic Astrophysics
