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Related papers: The interacting galaxy pair KPG 390: H$\alpha$ kin…

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We present new HI observations of the nearby dwarf galaxy NGC 3741. This galaxy has an extremely extended HI disk, which allows us to trace the rotation curve out to unprecedented distances in terms of the optical disk: we reach 42 B-band…

Astrophysics · Physics 2008-11-26 G. Gentile , P. Salucci , U. Klein , G. L. Granato

We performed the Fabry-Perot scanning interferometry of the quartet of galaxies NGC 7769, 7770, 7771 and 7771A in Ha line and studied their velocity fields. We found that the rotation curve of NGC 7769 is weakly distorted. The rotation…

Astrophysics of Galaxies · Physics 2015-12-03 A. A. Yeghiazaryan , A. A. Hakobyan , T. A. Nazaryan

The renormalization group framework can be applied to Quantum Field Theory on curved space-time, but there is no proof whether the beta-function of the gravitational coupling indeed goes to zero in the far infrared or not. In a recent paper…

Cosmology and Nongalactic Astrophysics · Physics 2012-09-28 Davi C. Rodrigues

We report the gross properties of the velocity field of the barred spiral galaxy NGC 3367. The following values were found: inclination with respect to the plane of the sky, i=30 deg; position angle (PA) of receding semi major axis PA=51…

Astrophysics · Physics 2009-11-06 J. Antonio Garcia-Barreto , M. Rosado

Given their prominent role in galaxy evolution, it is of paramount importance to unveil galaxy interactions and merger events and to investigate the underlying mechanisms. The use of high-resolution data makes it easier to identify merging…

We report near-infrared integral field spectroscopy of the luminous merging galaxy NGC 6240. Stellar velocities show that the two K-band peaks separated by 1.6arcsec are the central parts of inclined, rotating disk galaxies with equal mass…

Astrophysics · Physics 2009-10-31 M. Tecza , R. Genzel , L. J. Tacconi , S. Anders , L. E. Tacconi-Garman , N. Thatte

We present a kinematic study of a sample of 298 planetary nebulas (PNs) in the outer halo of the central Virgo galaxy M87 (NGC~4486). The line-of-sight velocities of these PNs are used to identify sub-components, to measure the angular…

Astrophysics of Galaxies · Physics 2018-12-05 A. Longobardi , M. Arnaboldi , O. Gerhard , C. Pulsoni , I. Söldner-Rembold

We carried out detailed kinematic studies of the complex of multiple HI and HII shells that represent the only region of ongoing star formation in the dwarf irregular galaxy IC 1613. We investigated the ionized-gas kinematics by using…

Astrophysics · Physics 2009-11-07 T. A. Lozinskaya , A. V. Moiseev , N. Yu. Podorvanyuk

This study presents a deep H{\alpha} kinematical analysis of the Sculptor Group galaxy NGC253. The Fabry-Perot data were taken with the 36-cm Marseille Telescope in La Silla, Chile, using an EMCCD detector. Typical emission measures of ~0.1…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 J. Hlavacek-Larrondo , C. Carignan , O. Daigle , M. -M. de Denus-Baillargeon , M. Marcelin , B. Epinat , O. Hernandez

We have obtained narrow-band images and high-resolution spectra of the planetary nebulae NGC 6337, He 2-186, and K 4-47, with the aim of investigating the relation between their main morphological components and several low-ionization…

A survey of 329 nearby galaxies (redshift z < 0.045) has been conducted to study the distribution of mass and light within spiral galaxies over a range of environments. The 18 observed clusters and groups span a range of richness, density,…

Astrophysics · Physics 2009-11-10 Nicole P. Vogt , Martha P. Haynes , Terry Herter , Riccardo Giovanelli

From deep imaging data obtained with the Large Binocular Telescope as part of the Smallest Scale of Hierarchy Survey (SSH), we have discovered low-surface brightness tidal features around NGC 5238 and UGC 8760, two nearby and relatively…

Astrophysics of Galaxies · Physics 2024-05-22 R. Pascale , F. Annibali , M. Tosi , C. Nipoti , F. Marinacci , M. Bellazzini , J. M. Cannon , L. Schisgal , E. Sacchi F. Calura

As part of our current programme to test LCDM predictions for dark matter (DM) haloes using extended kinematical observations of early-type galaxies, we present a dynamical analysis of the bright elliptical galaxy NGC 4374 (M84) based on…

(abridged) Several N-body methods were combined in order to develop a method for the determination of the parameters of interacting galaxies. This method has been applied to the HI distribution of NGC4449. In a first step the fast…

Astrophysics · Physics 2007-05-23 Christian Theis

We present the integrated Halpha emission line profile for 157 HII regions in the central 3.4' x 3.4' of the galaxy M 83 (NGC 5236). Using the Fabry-Perot interferometer GHaFaS, on the 4.2 m William Herschel on La Palma, we show the…

The results of the stellar photometry of the images ACS/WFC and WFPC2 of the HST are used to study stellar population and spatial distribution of stars in three edge-on galaxies: NGC 891, NGC 4144 and NGC 4244. The measuring of the number…

Astrophysics · Physics 2009-11-10 N. A. Tikhonov , O. A. Galazutdinova

We present XMM-Newton X-ray observations of the interacting galaxy pairs NGC7771/7770 and NGC2342/2341. In NGC7771, for the first time we are able to resolve the X-ray emission into a bright central source (L(X)~10^41 erg/s), plus two…

Astrophysics · Physics 2009-11-10 L. P. Jenkins , T. P. Roberts , M. J. Ward , A. Zezas

We describe a non-parametric method for determining both the anisotropy and mass profiles of elliptical galaxies from velocity dispersions and velocity profile shapes along the line of sight. In this way, mass-to-light ratios out to 2-3…

Astrophysics · Physics 2007-05-23 Andi Kronawitter , Ortwin E. Gerhard , R. P. Saglia , Ralf Bender

Context. Edge-on galaxies can offer important insights in galaxy evolution as they are the only systems where the distribution of the different components can be studied both radially and vertically. The HEROES project was designed to…