English
Related papers

Related papers: Disentangling the stellar populations in the count…

200 papers

We present the results of integral-field spectroscopic observations of the two disk galaxies NGC 3593 and NGC 4550 obtained with VIMOS/VLT. Both galaxies are known to host 2 counter-rotating stellar disks, with the ionized gas co-rotating…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 L. Coccato , L. Morelli , A. Pizzella , E. M. Corsini , L. M. Buson , E. Dalla Bonta'

The Sa spiral NGC 4138 is known to host two counter-rotating stellar disks, with the ionized gas co-rotating with one of them. We measured the kinematics and properties of the two counter-rotating stellar populations to constrain their…

Context. Many disk galaxies host two extended stellar components that rotate in opposite directions. The analysis of the stellar populations of the counter-rotating components provides constraints on the environmental and internal processes…

Astrophysics of Galaxies · Physics 2017-04-05 L. Morelli , A. Pizzella , L. Coccato , E. M. Corsini , E. Dalla Bontà , L. M. Buson , V. D. Ivanov , I. Pagotto , E. Pompei , M. Rocco

The counter-rotation phenomenon in disc galaxies directly indicates a complex galaxy assembly history which is crucial for our understanding of galaxy physics. Here we present the complex data analysis for a lenticular galaxy NGC 448, which…

Astrophysics of Galaxies · Physics 2016-07-27 Ivan Yu. Katkov , Olga K. Sil'chenko , Igor V. Chilingarian , Roman I. Uklein , Oleg V. Egorov

We present observations of the CO(1-0) emission in the central 750 pc (10 arcsec) of the counter-rotating disc galaxy NGC 4550, obtained at the Institut de Radioastronomie Millimetrique (IRAM) Plateau de Bure Interferometer. Very little…

We present the results of the VLT/VIMOS integral-field spectroscopic observations of the inner 28"x28" (3.1 kpc x 3.1 kpc) of the interacting spiral NGC 5719, which is known to host two co-spatial counter-rotating stellar discs. At each…

Using the integral field spectroscopic data from Mapping Nearby Galaxies at Apache Point Observatory survey, we study the kinematics and stellar population properties of the two counter-rotating stellar disks in a nearby galaxy SDSS…

Astrophysics of Galaxies · Physics 2024-01-23 Min Bao , Yanmei Chen , Meng Yang , Ling Zhu , Yong Shi , Qiusheng Gu

The process of galactic disc growing is still not fully understood. In the majority of disk galaxies the gas and stars are located in the same plane and rotate in the same direction. However, there are kinematically peculiar galaxies…

Astrophysics of Galaxies · Physics 2022-10-04 Damir Gasymov , Ivan Katkov

We have obtained high signal-to-noise spectra along the major axes of 28 S0 galaxies in order to search for the presence of disk stars on retrograde orbits. Full line-of-sight velocity distributions were extracted from the data, and the…

Astrophysics · Physics 2015-06-24 Konrad Kuijken , David Fisher , Michael R. Merrifield

We disentangle two counter-rotating stellar components in NGC 4191 and characterize their physical properties (kinematics, morphology, age, metallicity, and abundance ratio). We performed a spectroscopic decomposition on integral field data…

The formation scenario of extended counter-rotating stellar disks in galaxies is still debated. In this paper, we study the S0 galaxy IC 719 known to host two large-scale counter-rotating stellar disks in order to investigate their…

The kinematics and stellar populations of the low-mass nearby S0 galaxy NGC 5102 are studied from integral field spectra taken with the Multi-Unit Spectroscopic Explorer (MUSE). The kinematic maps reveal for the first time that NGC 5102 has…

Astrophysics of Galaxies · Physics 2016-12-07 Martin Mitzkus , Michele Cappellari , C. Jakob Walcher

We find a distinct stellar population in the counter-rotating and kinematically decoupled core of the isolated massive elliptical galaxy NGC 1700. Coinciding with the edge of this core we find a significant change in the slope of the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 K. Kleineberg , P. Sanchez-Blazquez , A. Vazdekis

We present interferometric observations resolving the CO emission in the four gas-rich lenticular galaxies NGC 3032, NGC 4150, NGC 4459, and NGC 4526, and we compare the CO distribution and kinematics to those of the stars and ionized gas.…

Astrophysics · Physics 2009-11-13 Lisa M. Young , Martin Bureau , Michele Cappellari

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…

Though S0 galaxies are usually thought to be `red and dead', they demonstrate often star formation organized in ring structures. We try to clarify the nature of this phenomenon and its difference from star formation in spiral galaxies. The…

Astrophysics of Galaxies · Physics 2020-02-19 I. Proshina , O. Sil'chenko , A. Moiseev

We present a spectral decomposition technique and its applications to a sample of galaxies hosting large-scale counter-rotating stellar disks. Our spectral decomposition technique allows to separate and measure the kinematics and the…

Astrophysics of Galaxies · Physics 2014-02-24 L. Coccato , L. Morelli , A. Pizzella , E. M. Corsini , E. Dalla Bonta' , L. M. Buson

Using the integral field unit (IFU) data from Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, we select a sample of 101 galaxies with counter-rotating stellar disks and regularly-rotating ionized gas disk. We classify…

Astrophysics of Galaxies · Physics 2023-07-26 Min Bao , Yanmei Chen , Pengpei Zhu , Yong Shi , Dmitry Bizyaev , Ling Zhu , Meng Yang , Minje Beom , Joel R. Brownstein , Richard R. Lane

A single merger scenario for making galaxies such as NGC 4550 possessing equal coplanar counter-rotating stellar disks is investigated by collisionless N-body technique. The scenario is successful in producing an axisymmetric disk made of…

Astrophysics · Physics 2007-05-23 D. Pfenniger

Context. Kinematically decoupled cores (KDCs) are often found in the centers of early-type galaxies. Aims. We aim to investigate the kinematics, structure, and stellar populations of the KDC residing in the early-type galaxy NGC 4494 to…

Astrophysics of Galaxies · Physics 2024-11-05 L. Coccato , L. Morelli , A. Pizzella , E. M. Corsini , V. Cuomo
‹ Prev 1 2 3 10 Next ›