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Related papers: A 60 pc counter-rotating core in NGC 4621

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We have obtained interferometer observations of the central region of the Sb galaxy NGC 4527 in the 12CO (J=1-0) line emission using the Nobeyama Millimeter Array. We also obtained optical (Halpha, [NII]) spectroscopy using the Okayama…

Astrophysics · Physics 2015-06-24 Y. Sofue , A. Tomita , M. Honma , Y. Tutui

We present optical long-slit spectra of the Virgo dwarf elliptical galaxy VCC 510 at high spectral and spatial resolution. Heliocentric velocities and velocity dispersions as functions of galaxy radius are derived by deconvolving…

Astrophysics · Physics 2009-11-11 D. Thomas , F. Brimioulle , R. Bender , U. Hopp , L. Greggio , C. Maraston , R. P. Saglia

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…

Astrophysics · Physics 2009-11-10 M. Geha , P. Guhathakurta , R. van der Marel

We present a detailed study of the stellar kinematics in the barred galaxy NGC 5728 based on I-band photometry and long-slit spectroscopic observations in the region of the near-IR Ca II triplet. The analysis of the stellar line-of-sight…

Astrophysics · Physics 2016-08-30 F. Prada , C. M. Gutierrez

Studies of the kinematics of NGC 1407 have revealed complex kinematical structure, consisting of the outer galaxy, an embedded disc within a radius of $\sim60$ arcsec, and a kinematically decoupled core (KDC) with a radius of less than…

Astrophysics of Galaxies · Physics 2018-09-05 Evelyn J. Johnston , George K. T. Hau , Lodovico Coccato , Cristian Herrera

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 present observations of the nuclear star cluster in the nearby edge-on spiral galaxy NGC 4244 using the Gemini Near-Infrared Integral Field Spectrograph (NIFS) with laser guide star adaptive optics. From a previous study of edge-on…

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

Rotation measure (RM) synthesis maps of NGC 4631 show remarkable sign reversals with distance from the minor axis in the northern halo of the galaxy on kpc scales. To explain this new phenomenon, we solve the dynamo equations under the…

Astrophysics of Galaxies · Physics 2019-05-31 Alex Woodfinden , Richard Henriksen , Judith Irwin , Silvia Carolina Mora-Partiarroyo

Previous studies have reported the existence of two counter-rotating stellar disks in the early-type spiral galaxy NGC7217. We have obtained high-resolution optical spectroscopic data (R ~ 9000) with the new fiber-based Integral Field Unit…

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 present a detailed 3D kinematic analysis of the central regions ($R<30''$) of the low-mass and dynamically evolved galactic globular cluster NGC 6362. The study is based on data obtained with ESO-VLT/MUSE used in combination with the…

Astrophysics of Galaxies · Physics 2021-05-12 E. Dalessandro , S. Raso , S. Kamann , M. Bellazzini , E. Vesperini , A. Bellini , G. Beccari

We present results from a series of follow-up observations of a sub-sample of the representative SAURON survey elliptical (E) and lenticular (S0) galaxies using the OASIS integral-field spectrograph. These observations focus on the central…

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 aim at a detailed description of the kinematic properties of the old, (several Gyrs) late-type CO-absorption star population among the Galactic centre (GC) cluster stars. We applied AO-assisted, near-infrared imaging and integral-field…

In recent years integral-field spectroscopic surveys have revealed that the presence of kinematically decoupled stellar components is not a rare phenomenon in nearby galaxies. However, complete statistics are still lacking because they…

Astrophysics of Galaxies · Physics 2021-10-13 M. Rubino , A. Pizzella , L. Morelli , L. Coccato , E. Portaluri , V. P. Debattista , E. M. Corsini , E. Dalla Bontà

We have carried out observations of the starless core L1544 in the CCS (J_N=3_2-2_1) line at 9 millimeters wavelength using the BIMA array. The maps show an elongated condensation, 0.15 x 0.045 pc in size, with stronger emission at the…

Astrophysics · Physics 2009-10-31 Nagayoshi Ohashi , Siow Wang Lee , David J. Wilner , Masahiko Hayashi

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…

Astrophysics · Physics 2009-10-28 Thomas S. Statler , Tammy Smecker-Hane , Gerald N. Cecil

We present a spectro-photometric survey of 2522 extragalactic globular clusters (GCs) around twelve early-type galaxies, nine of which have not been published previously. Combining space-based and multi-colour wide field ground-based…

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…

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