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The classification of galaxy mergers and isolated disks is key for understanding the relative importance of galaxy interactions and secular evolution during the assembly of galaxies. The kinematic properties of galaxies as traced by…

We contrast the gas kinematics and dark matter contents of $z=2$ star-forming galaxies (SFGs) from state-of-the-art cosmological simulations within the $\Lambda$CDM framework to observations. To this end, we create realistic mock…

Using the newly commissioned KCWI instrument on the Keck-II telescope, we analyse the stellar kinematics and stellar populations of the well-studied massive early-type galaxy (ETG) NGC 1407. We obtained high signal-to-noise…

Astrophysics of Galaxies · Physics 2019-06-26 Anna Ferre-Mateu , Duncan A. Forbes , Richard M. McDermid , Aaron J. Romanowsky , Jean P. Brodie

The origin of diverse kinematic morphologies observed in low-mass galaxies is unclear. In this study, we investigate the kinematic morphologies of central galaxies with stellar mass $10^{8.5-9.0} M_\odot$ at $z=0$ in the TNG50-1…

Astrophysics of Galaxies · Physics 2024-07-04 Guangquan Zeng , Lan Wang , Liang Gao , Hang Yang

Recent observations have shown that star-forming galaxies like our own Milky Way evolve kinematically into ordered thin disks over the last ~8 billion years since z=1.2, undergoing a process of "disk settling." For the first time, we study…

Astrophysics of Galaxies · Physics 2015-06-22 Susan A. Kassin , Alyson Brooks , Fabio Governato , Benjamin J. Weiner , Jonathan P. Gardner

We analyse the 2-dimensional distribution and kinematics of the stars as well as molecular and ionised gas in the central few hundred parsecs of 5 active and 5 matched inactive galaxies. The equivalent widths of the Br-gamma line indicate…

To understand the processes that build up galaxies we investigate the stellar structure and gas kinematics of spiral and irregular galaxies out to redshift 1. We target 92 galaxies in four cluster (z = 0.3 & 0.5) fields to study the…

Cosmology and Nongalactic Astrophysics · Physics 2009-09-17 Bodo L. Ziegler , Elif Kutdemir , Cristiano Da Rocha , Asmus Böhm , Reynier F. Peletier , Miguel Verdugo

We present a brief summary of our current results on the stellar distribution and population gradients of the resolved stars in the surroundings of ~50 nearby disk galaxies, observed with space- (Hubble & Spitzer) and ground-based…

We study the spatially resolved stellar populations of 444 galaxies at $0.3<z<6.0$ in two clusters (WHL0137-08 and MACS0647+70) and a blank field, combining imaging data from HST and JWST to perform spatially resolved spectral energy…

We study the spatially resolved star formation of 1494 galaxies in the SDSSIV-MaNGA Survey. SFRs are calculated using a two-step process, using $H_\alpha$ in star forming regions and $D_n4000$ in regions identified as AGN/LI(N)ER or…

Counter-rotating components in galaxies are one of the most direct forms of evidence for past gas accretion or merging. We discovered ten edge-on disk gaseous counter-rotators in a sample of 523 edge-on galaxies identified in the final…

Astrophysics of Galaxies · Physics 2022-06-22 Minje Beom , Dmitry Bizyaev , Rene A. M. Walterbos , Yanmei Chen

The center of our galaxy is home to a massive black hole, SgrA*, and a nuclear star cluster containing stellar populations of various ages. While the late type stars may be too old to have retained memory of their initial orbital…

Astrophysics of Galaxies · Physics 2015-06-18 Ann-Marie Madigan , Oliver Pfuhl , Yuri Levin , Stefan Gillessen , Reinhard Genzel , Hagai B. Perets

The exploitation of the power and the spatial resolution of HST and new generation ground-based telescopes allows to measure with good precision the individual stars of galaxies in and beyond the Local Group. This leads to very successful…

Astrophysics · Physics 2007-05-23 Monica Tosi

We investigate the relationship of kinematically misaligned galaxies with their large-scale environment, in the context of halo assembly bias. According to numerical simulations, halo age at fixed halo mass is intrinsically linked to the…

We use the deep CANDELS observations in the GOODS North and South fields to revisit the correlations between stellar mass ($M_*$), star--formation rate (SFR) and morphology, and to introduce a fourth dimension, the mass-weighted stellar…

We present the first asymmetric drift (AD) measurements for unresolved stellar populations of different characteristic ages above and below 1.5 Gyr. These measurements sample the age-velocity relation (AVR) in galaxy disks. In this first…

{We present, for the first time, photometric and kinematical evidence, obtained with FORS2 on the VLT, for the existence of kinematically decoupled cores (KDCs) in two dwarf elliptical galaxies; FS76 in the NGC5044 group and FS373 in the…

Astrophysics · Physics 2009-11-10 S. De Rijcke , H. Dejonghe , W. W. Zeilinger , G. K. T. Hau

The Coma cluster is one of the richest known cluster of galaxies, spanning about 4 dex in density. Hence it is the ideal place to study the structure of galaxies as a function of environmental density in order to constrain the theories of…

Astrophysics · Physics 2007-05-23 Doerte Mehlert , Roberto P. Saglia , Ralf Bender , Gary Wegner

We explore how the physical properties of disc galaxies relate to the presence of bars using data from the SDSS-IV MaNGA survey. By combining internal kinematical properties and environmental diagnostics, we find that barred galaxies are…

Astrophysics of Galaxies · Physics 2025-12-25 Erik Aquino-Ortíz , Bernardo Cervantes-Sodi , Karol Chim-Ramirez

We study the dynamical state and properties of galaxies and groups in the supercluster SClA2142 that has a collapsing core, to understand its possible formation and evolution. We find the substructure of galaxy groups using normal mixture…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-12 Maret Einasto , Mirt Gramann , Changbom Park , Juhan Kim , Boris Deshev , Elmo Tempel , Pekka Heinämäki , Heidi Lietzen , Anne Lähteenmäki , Jaan Einasto , Enn Saar
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