J
Jolanta Zjupa
Researcher at Heidelberg University
Publications - 7
Citations - 369
Jolanta Zjupa is an academic researcher from Heidelberg University. The author has contributed to research in topics: Galaxy & Galaxy formation and evolution. The author has an hindex of 5, co-authored 6 publications receiving 290 citations. Previous affiliations of Jolanta Zjupa include Heidelberg Institute for Theoretical Studies & Centre national de la recherche scientifique.
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Journal ArticleDOI
The role of mergers and halo spin in shaping galaxy morphology
Vicente Rodriguez-Gomez,Vicente Rodriguez-Gomez,Laura V. Sales,Shy Genel,Shy Genel,Annalisa Pillepich,Annalisa Pillepich,Jolanta Zjupa,Jolanta Zjupa,Dylan Nelson,Brendan F. Griffen,Paul Torrey,Gregory F. Snyder,Mark Vogelsberger,Volker Springel,Volker Springel,Chung-Pei Ma,Lars Hernquist +17 more
TL;DR: In this paper, the authors consider 18,000 central galaxies with stellar masses from the Illustris cosmological hydrodynamic simulation and find that the fraction of accreted stars increases with galaxy stellar mass, from less than 5% in dwarfs to 80% in the most massive objects.
Journal ArticleDOI
Angular momentum properties of haloes and their baryon content in the Illustris simulation
TL;DR: In this paper, the authors employ the Illustris simulation suite, one of the first simulations of galaxy formation with full hydrodynamics that produces a realistic galaxy population in a sizeable volume, to quantify the baryonic spin properties for more than 320,000 haloes.
Journal ArticleDOI
Gas accretion and galactic fountain flows in the Auriga cosmological simulations: angular momentum and metal redistribution
Robert J. J. Grand,Freeke van de Voort,Jolanta Zjupa,Francesca Fragkoudi,Facundo A. Gómez,Guinevere Kauffmann,Federico Marinacci,Rüdiger Pakmor,Volker Springel,Simon D. M. White +9 more
TL;DR: In this paper, the origin of the baryonic material found in stars at redshift zero was investigated using a set of 15 high-resolution magnetohydrodynamic cosmological simulations of Milky Way formation.
Journal ArticleDOI
Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion
Qirong Zhu,Qirong Zhu,Dandan Xu,Massimo Gaspari,Vicente Rodriguez-Gomez,Dylan Nelson,Mark Vogelsberger,Paul Torrey,Annalisa Pillepich,Jolanta Zjupa,Jolanta Zjupa,Rainer Weinberger,Federico Marinacci,Rüdiger Pakmor,Shy Genel,Shy Genel,Yuexing Li,Volker Springel,Volker Springel,Volker Springel,Lars Hernquist +20 more
TL;DR: In this paper, the authors reported a Malin 1 analogue in the 100 Mpc IllustrisTNG simulation and described its formation history, finding that a large fraction of the cold gas at redshift zero originated from the cooling of hot halo gas, triggered by the merger of a pair of intruding galaxies.
Posted Content
Intrinsic Alignments in IllustrisTNG and their implications for weak lensing: Tidal shearing and tidal torquing mechanisms put to the test
TL;DR: In this article, the authors used morphologically selected samples of elliptical and spiral galaxies from the IllustrisTNG simulation at z=0 and z=1 to test the commonly employed linear and quadratic (tidal torquing) models for intrinsic alignments.