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相关论文: Mapping the Kinematically Decoupled Core in NGC 14…

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Aims. Interacting galaxies show unique irregularities in their kinematic structure. By investigating the spatially resolved kinematics and stellar population properties of galaxies that show irregularities, we can paint a detailed picture…

星系天体物理 · 物理学 2021-03-31 Kiyoaki Christopher Omori , Tsutomu T. Takeuchi

We report the detection of the Galactic nuclear disc in line-of-sight kinematics of stars, measured with infrared spectroscopy from APOGEE. This stellar component of the nuclear disc has an extent and rotation velocity V ~ 120kms comparable…

星系天体物理 · 物理学 2015-10-21 Ralph Schönrich , Michael Aumer , Stuart E. Sale

Aims. We study the kinematically distinct components in two early-type galaxies NGC 448 and NGC 4365 aided by integral-field observations with the Multi Unit Spectroscopic Explorer (MUSE) on the Very Large Telescope. We aim to measure the…

星系天体物理 · 物理学 2019-03-13 B. Nedelchev , L. Coccato , E. M. Corsini , M. Sarzi , T. de Zeeuw , A. Pizzella , E. Dalla Bontà , E. Iodice , L. Morelli

A detailed kinematic analysis of ionized gas in the nearby irregular galaxy NGC 4449 is presented. Observations are conducted in the spectral lines of Halpha and [SII]. Our scanning Fabry--Perot interferometric observations are presented…

We present wide-field Keck telescope imaging of the globular cluster (GC) systems around NGC 1407 and NGC 1400 in the Eridanus galaxy cloud. This is complemented by Hubble Space Telescope images from the Advanced Camera for Surveys of NGC…

天体物理学 · 物理学 2009-11-13 Duncan Forbes , Patricia Sanchez-Blazquez , Anna Phan , Jean Brodie , Jay Strader , Lee Spitler

This is the first paper of a series focused on investigating the star formation and evolutionary history of the two early-type galaxies NGC 1407 and NGC 1400. They are the two brightest galaxies of the NGC 1407 (or Eridanus-A) group, one of…

天体物理学 · 物理学 2009-11-13 Max Spolaor , Duncan A. Forbes , George K. T. Hau , Robert N. Proctor , Sarah Brough

Aims: We present the first in-depth study of the kinematic properties and derive the structural parameters of NGC 4372 based on the fit of a Plummer profile and a rotating, physical model. We explore the link between internal rotation to…

Explaining the internal distribution and motions of stars and gas in galaxies is a key aspect in understanding their evolution. In previous work we identified five well resolved galaxies with atypical kinematics from a cosmological…

星系天体物理 · 物理学 2019-03-13 Philip Taylor , Chiaki Kobayashi , Christoph Federrath

We present evidence for a counter-rotating core in the low-luminosity (M_B = -18.2) elliptical galaxy NGC 770 based on internal stellar kinematic data. This counter-rotating core is unusual as NGC 770 is not the primary galaxy in the region…

天体物理学 · 物理学 2009-11-10 M. Geha , P. Guhathakurta , R. van der Marel

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.…

天体物理学 · 物理学 2009-11-13 Lisa M. Young , Martin Bureau , Michele Cappellari

We have measured the stellar motions in the elliptical galaxy NGC 1700 along four position angles, to very large radii, using absorption features in spectra obtained with the Multiple Mirror Telescope. Our data extend the coverage of the…

天体物理学 · 物理学 2009-10-28 Thomas S. Statler , Tammy Smecker-Hane , Gerald N. Cecil

Detailed studies of the photometric and kinematical properties of compact groups of galaxies are crucial to understand the physics of galaxy interactions and to shed light on some aspects of galaxy formation and evolution. In this paper we…

天体物理学 · 物理学 2009-11-11 M. Spavone , E. Iodice , G. Longo , M. Paolillo , S. Sodani

The nearby blue compact dwarf, NGC 2915, has its stellar disc embedded in a large, extended (~ 22 B-band scale-lengths) HI disc. New high-resolution HI synthesis observations of NGC 2915 have been obtained with the Australia Telescope…

宇宙学与河外天体物理 · 物理学 2015-05-27 E. C. Elson , W. J. G. de Blok , R. C. Kraan-Korteweg

Owing to their shallow stellar potential, dwarf galaxies possess thick gas disks, which makes them good candidates for studies of the galactic vertical kinematical structure. We present 21 cm line observations of the isolated nearby dwarf…

We report on the discovery of a rapidly co-rotating stellar and gas component in the nucleus of the shell elliptical NGC2865. The stellar component extends ~ 0.51/h100 kpc along the major axis, and shows depressed velocity dispersion and…

天体物理学 · 物理学 2009-10-31 G. K. T. Hau , D. Carter , M. Balcells

We present adaptive optics assisted OASIS integral field spectrography of the S0 galaxy NGC 4621. Two-dimensional stellar kinematical maps (mean velocity and dispersion) reveal the presence of a 60 pc diameter counter-rotating core (CRC),…

天体物理学 · 物理学 2009-11-07 Fabien Wernli , Eric Emsellem , Yannick Copin

We perform analysis of the three-dimensional kinematics of Milky Way disk stars in mono-age populations. We focus on stars between Galactocentric distances of $R=6$ and 14 \,kpc, selected from the combined LAMOST DR4 red clump giant stars…

The innermost regions of most galaxies are characterised by the presence of extremely dense nuclear star clusters. Nevertheless, these clusters are not the only stellar component present in galactic nuclei, where larger stellar structures…

NGC 1427A is a LMC-like irregular galaxy in the Fornax cluster with an extended pattern of strong star formation around one of its edges, which is probably due to some kind of interaction with the cluster environment. We present H-alpha…

天体物理学 · 物理学 2009-10-31 J. Chaname , L. Infante , A. Reisenegger

We applied the currently most comprehensive version of the statistical-parallax technique to derive kinematical parameters of the maser sample with 136 sources. Our kinematic model comprises the overall rotation of the Galactic disk and the…

星系天体物理 · 物理学 2017-06-21 A. S. Rastorguev , N. D. Utkin , M. V. Zabolotskikh , A. K. Dambis , A. T. Bajkova , V. V. Bobylev