no code implementations • 31 Jan 2022 • Jonas Haldemann, Victor Ksoll, Daniel Walter, Yann Alibert, Ralf S. Klessen, Willy Benz, Ullrich Koethe, Lynton Ardizzone, Carsten Rother
Indeed, using cINNs allows for orders of magnitude faster inference of an exoplanet's composition than what is possible using an MCMC method, however, it still requires the computation of a large database of internal structures to train the cINN.
no code implementations • 6 Jan 2021 • Jordan A. Turner, Daniel A. Dale, Janice C. Lee, Mederic Boquien, Rupali Chandar, Sinan Deger, Kirsten L. Larson, Angus Mok, David A. Thilker, Leonardo Ubeda, Bradley C. Whitmore, Francesco Belfiore, Frank Bigiel, Guillermo A. Blanc, Eric Emsellem, Kathryn Grasha, Brent Groves, Ralf S. Klessen, Kathryn Kreckel, J. M. Diederik Kruijssen, Adam K. Leroy, Erik Rosolowsky, Patricia Sanchez-Blazquez, Eva Schinnerer, Andreas Schruba, Schuyler D. Van Dyk, Thomas G. Williams
We report on the use of the publicly available Code Investigating GALaxy Emission (CIGALE) SED fitting package to derive ages, stellar masses, and reddenings for star clusters identified in the Physics at High Angular resolution in Nearby GalaxieS-HST (PHANGS-HST) survey.
Astrophysics of Galaxies Instrumentation and Methods for Astrophysics
no code implementations • 17 Mar 2020 • R. Riaz, D. R. G. Schleicher, S. Vanaverbeke, Ralf S. Klessen
The fragmentation behavior depends mostly on the Jeans mass at the turning point in the equation of state where a transition occurs from an approximately isothermal to an adiabatic regime due to dust opacities.
Astrophysics of Galaxies Solar and Stellar Astrophysics
1 code implementation • 26 Sep 2018 • Maik Druschke, Anna T. P. Schauer, Simon C. O. Glover, Ralf S. Klessen
On the scale of the virial radius, there is a good correlation between the shape and spin of the gas and that of the dark matter.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics
1 code implementation • 10 Sep 2018 • Mattia C. Sormani, Emanuele Sobacchi, Gabriele Pezzulli, James Binney, Ralf S. Klessen
However, the two main categories of models that are used in the literature are poorly suited for this task: (i) simple barotropic models are analytic and can therefore be adjusted to match the observations, but are clearly unrealistic because the rotational velocity $v_\phi(R, z)$ does not depend on the distance $z$ from the galactic plane, while (ii) models obtained as a result of cosmological galaxy formation simulations are more realistic, but are impractical to fit to observations due to high computational cost.
Astrophysics of Galaxies
2 code implementations • ICLR 2019 • Lynton Ardizzone, Jakob Kruse, Sebastian Wirkert, Daniel Rahner, Eric W. Pellegrini, Ralf S. Klessen, Lena Maier-Hein, Carsten Rother, Ullrich Köthe
Often, the forward process from parameter- to measurement-space is a well-defined function, whereas the inverse problem is ambiguous: one measurement may map to multiple different sets of parameters.