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Related papers: Spatially Resolved Properties of Galaxies with a K…

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We use high spatial resolution stellar velocity maps from the Gemini GMOS integral-field spectrograph (IFS) and wide-field velocity maps from the McDonald Mitchell IFS to study the stellar velocity profiles and kinematic misalignments from…

Astrophysics of Galaxies · Physics 2020-03-11 Irina Ene , Chung-Pei Ma , Jonelle L. Walsh , Jenny E. Greene , Jens Thomas , John P. Blakeslee

We present a case study of a early-type galaxy (ETG) hosting a kinematically distinct core (KDC) formed in a binary high resolution 1:1 spiral galaxy merger simulation. The runtime of the simulation is pushed up to 10Gyr to follow the…

Astrophysics of Galaxies · Physics 2017-08-21 Felix Schulze , Rhea-Silvia Remus , Klaus Dolag

We analyzed the global and resolved properties of approximately 1,240 nearby star-forming galaxies from the MaNGA survey, comparing compact and extended galaxies -- those with smaller and larger radii ($R_{\rm e}$), respectively -- at a…

Astrophysics of Galaxies · Physics 2024-10-23 Lin Lin , Shiyin Shen , Hassen M. Yesuf , Ye-Wei Mao , Lei Hao

We investigate the kinematic properties of nine nearby early-type galaxies with evidence of a disk-like component. Three of these galaxies are located in the field, five in the group and only one in the cluster environment. By combining the…

Astrophysics of Galaxies · Physics 2021-04-14 A. Dolfi , D. A. Forbes , W. J. Couch , K. Bekki , A. Ferré-Mateu , A. J. Romanowsky , J. P. Brodie

The internal dynamics of multiple stellar populations in Globular Clusters (GCs) provides unique constraints on the physical processes responsible for their formation. Specifically, the present-day kinematics of cluster stars, such as…

Solar and Stellar Astrophysics · Physics 2020-02-05 G. Cordoni , A. P. Milone , A. Mastrobuono-Battisti , A. F. Marino , E. P. Lagioia , M. Tailo , H. Baumgardt , M. Hilker

The disks of galaxies are primarily stellar systems, and fundamentally dynamical entities. Thus, to fully understand galactic disks, we must study their stellar kinematics as well as their morphologies. Observational techniques have now…

Astrophysics · Physics 2007-05-23 Michael R. Merrifield , Konrad Kuijken

The kinematic morphology-density relation of galaxies is normally attributed to a changing distribution of galaxy stellar masses with the local environment. However, earlier studies were largely focused on slow rotators; the dynamical…

We present an analysis of the stellar kinematics of the Large Magellanic Cloud based on ~5900 new and existing velocities of massive red supergiants, oxygen-rich and carbon-rich AGB stars, and other giants. After correcting the…

Astrophysics of Galaxies · Physics 2017-01-04 Knut A. G. Olsen , Dennis Zaritsky , Robert D. Blum , Martha L. Boyer , Karl D. Gordon

Understanding galaxy evolution is key to explaining the structures we observe in the present-day Universe. Counterrotating stellar disks (CRDs), i.e. co-spatial stellar disks rotating with opposite angular momentum, have been proposed as…

Astrophysics of Galaxies · Physics 2026-03-04 M. C. Bugueño , Facundo A. Gómez , Arianna Dolfi , Patricia B. Tissera

We have analysed HST/WFPC2 F555W and F814W images for fifteen elliptical galaxies with kinematically-distinct cores. For each of them we have derived surface brightness and isophotal parameter profiles in the two bands, color maps, and…

Astrophysics · Physics 2009-10-30 C. M. Carollo , M. Franx , G. D. Illingworth , D. A. Forbes

In order to try and understand its origins, we present high-quality long-slit spectral observations of the counter-rotating stellar discs in the strange S0 galaxy NGC 4550. We kinematically decompose the spectra into two counter-rotating…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Evelyn J. Johnston , Michael R. Merrifield , Alfonso Aragon-Salamanca , Michele Cappellari

We use kinematical and chemical properties of 754 Corot stars to characterise the stellar populations of the Milky Way disc in three beams close the Galactic plane. From the atmospheric parameters derived in Gazzano et al. (2010) with the…

Astrophysics of Galaxies · Physics 2015-06-12 J. -C. Gazzano , G. Kordopatis , M. Deleuil , P. de Laverny , A. Recio-Blanco , V. Hill

We present a spectral decomposition technique that separates the contribution of different kinematic components in galaxies from the observed spectrum. This allows to study the kinematics and properties of the stellar populations of the…

The star-forming clumps in star-bursting dwarf galaxies provide valuable insights into the understanding of the evolution of dwarf galaxies. In this paper, we focus on five star-bursting dwarf galaxies featuring off-centered clumps in the…

Astrophysics of Galaxies · Physics 2023-11-28 Mengting Ju , Jun Yin , Lei Hao , Chenxu Liu , Chao-Wei Tsai , Junfeng Wang , Zhengyi Shao , Shuai Feng , Yu Rong

The study of stellar kinematic properties may provide hints on the formation and evolution of elliptical and lenticular galaxies. Although most previous studies have focused on the large scale of these galaxies, their central regions…

Astrophysics of Galaxies · Physics 2016-10-06 T. V. Ricci , J. E. Steiner , R. B. Menezes

We have examined the morphological and dynamical HI symmetry properties of a sample of moderately inclined Sa galaxies which are classified as morphologically normal. The sample galaxies were known a prior to exhibit kinematic peculiarities…

Astrophysics · Physics 2009-10-31 David A. Kornreich , Martha P. Haynes , Katherine P. Jore , R. V. E. Lovelace

In this work, we analyze a sample of $\sim$4000 massive ($M_*\geq 10^{11} M_\odot$ at $z=0$) galaxies in TNG300, the $(300 \mathrm{Mpc})^3$ box of the IllustrisTNG simulation suite. We characterize the shape and kinematics of these galaxies…

Astrophysics of Galaxies · Physics 2022-09-27 Sahil Hegde , Greg L. Bryan , Shy Genel

Galaxy mergers and interactions are expected to play a significant role leading to offsets between gas and stellar motions in galaxies. Herein we crossmatch galaxies in MaNGA MPL-8 with the Dark Energy Spectroscopic Instrument (DESI) Legacy…

We present the formation of a Kinematically Decoupled Core (KDC) in an elliptical galaxy, resulting from a major merger simulation of two disk galaxies. We show that although the two progenitor galaxies are initially following a prograde…

Astrophysics of Galaxies · Physics 2015-06-23 Athanasia Tsatsi , Andrea V. Macciò , Glenn van de Ven , Benjamin P. Moster

The interaction between galaxies is believed to be the main origin of the peculiarities of galaxies, which disturbs not only the morphology but also their kinematics. These disturbed and asymmetric features are the indicators of galaxy…

Astrophysics of Galaxies · Physics 2020-04-08 Shuai Feng , Shi-Yin Shen , Fang-Ting Yuan , Rogemar A. Riffel , Kaike Pan