J
Justus Neumann
Researcher at Institute of Cosmology and Gravitation, University of Portsmouth
Publications - 34
Citations - 392
Justus Neumann is an academic researcher from Institute of Cosmology and Gravitation, University of Portsmouth. The author has contributed to research in topics: Galaxy & Star formation. The author has an hindex of 8, co-authored 17 publications receiving 204 citations. Previous affiliations of Justus Neumann include European Southern Observatory & Leibniz Institute for Astrophysics Potsdam.
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Journal ArticleDOI
Time Inference with MUSE in Extragalactic Rings (TIMER): Properties of the Survey and High-Level Data Products
Dimitri A. Gadotti,Patricia Sanchez-Blazquez,Jesús Falcón-Barroso,Jesús Falcón-Barroso,Bernd Husemann,Marja K. Seidel,Isabel Pérez,Adriana de Lorenzo-Cáceres,Adriana de Lorenzo-Cáceres,Inma Martinez-Valpuesta,Inma Martinez-Valpuesta,Francesca Fragkoudi,Francesca Fragkoudi,Gigi Y. C. Leung,Glenn van de Ven,Glenn van de Ven,Ryan Leaman,Paula Coelho,Marie Martig,Marie Martig,Taehyun Kim,Taehyun Kim,Justus Neumann,Justus Neumann,Miguel Querejeta +24 more
TL;DR: The Time Inference with MUSE in Extragalactic Rings (TIMER) project is a survey with the VLT-MUSE integral-field spectrograph of 24 nearby barred galaxies with prominent central structures.
Journal ArticleDOI
The inside-out formation of nuclear discs and the absence of old central spheroids in barred galaxies of the TIMER survey
A. Bittner,Patricia Sanchez-Blazquez,Dimitri A. Gadotti,Justus Neumann,Francesca Fragkoudi,Paula Coelho,Adriana de Lorenzo-Cáceres,Jesús Falcón-Barroso,Taehyun Kim,Ryan Leaman,Ignacio Martín-Navarro,Jairo Méndez-Abreu,Isabel Pérez,Miguel Querejeta,Marja K. Seidel,Glenn van de Ven +15 more
TL;DR: In this article, the authors use the MUSE integral-field spectrograph for the TIMER sample of 21 massive barred galaxies to constrain the formation and evolution of nuclear rings and nuclear discs, by deriving maps of mean stellar ages, metallicities and [$α$/Fe] abundances.
Journal ArticleDOI
Inside-out formation of nuclear discs and the absence of old central spheroids in barred galaxies of the TIMER survey
A. Bittner,A. Bittner,Patricia Sanchez-Blazquez,Dimitri A. Gadotti,Justus Neumann,Francesca Fragkoudi,Paula Coelho,Adriana de Lorenzo-Cáceres,Adriana de Lorenzo-Cáceres,Jesús Falcón-Barroso,Jesús Falcón-Barroso,Taehyun Kim,Ryan Leaman,Ignacio Martín-Navarro,Ignacio Martín-Navarro,Jairo Méndez-Abreu,Jairo Méndez-Abreu,Isabel Pérez,Miguel Querejeta,Marja K. Seidel,Glenn van de Ven +20 more
TL;DR: In this article, the authors use the MUSE integral-field spectrograph for the TIMER sample of 21 massive barred galaxies to constrain the formation and evolution of nuclear rings and nuclear discs by deriving maps of mean stellar ages, metallicities, and [α/Fe] abundances.
Journal ArticleDOI
A combined photometric and kinematic recipe for evaluating the nature of bulges using the CALIFA sample
Justus Neumann,Lutz Wisotzki,O. S. Choudhury,Dimitri A. Gadotti,C. J. Walcher,Joss Bland-Hawthorn,Rubén García-Benito,R. M. González Delgado,Bernd Husemann,Raffaella Anna Marino,Isabel Márquez,Sebastián F. Sánchez,Bodo L. Ziegler +12 more
TL;DR: In this article, the authors present a recipe to separate inner discs from classical bulges by combining four different parameters from photometric and kinematic analyses: the bulge Sersic index, the concentration index $C_{20,50}$, the Kormendy (1977) relation and the inner slope of the radial velocity dispersion profile.
Journal ArticleDOI
A combined photometric and kinematic recipe for evaluating the nature of bulges using the CALIFA sample
Justus Neumann,Justus Neumann,Lutz Wisotzki,O. S. Choudhury,Dimitri A. Gadotti,C. J. Walcher,Joss Bland-Hawthorn,Rubén García-Benito,R. M. González Delgado,Bernd Husemann,Raffaella Anna Marino,Isabel Márquez,Sebastián F. Sánchez,Bodo L. Ziegler +13 more
TL;DR: In this article, a recipe to separate inner discs from classical bulges by combining four different parameters from photometric and kinematic analyses is presented, including the bulge Sersic index n b, the concentration index C 20,50, the Kormendy (1977, ApJ, 217, 406) relation and the inner slope of the radial velocity dispersion profile ∇σ.