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Spectroscopic observations of three lenticular (S0) galaxies (NGC 1167, NGC 4150, and NGC 6340) and one SBa galaxy (NGC 2273) have been taken with the 6-m telescope of the Special AstrophysicalObservatory of the Russian Academy of Sciences…

Astrophysics · Physics 2009-11-13 A. V. Zasov , A. V. Moiseev , A. V. Khoperskov , E. A. Sidorova

We present new radial velocity measurements from the Magellan and the Anglo-Australian Telescopes for 174 previously known and 122 newly confirmed globular clusters (GCs) around NGC 5128, the nearest accessible massive early-type galaxy at…

The results of $H_\alpha$ and [NII]$\lambda 6583$ observations of the spiral galaxy NGC 1084 at the SAO 6m telescope with a Fabry-Perot interferometer are presented. The complex structure of the emission line profile has revealed the…

Astrophysics · Physics 2007-05-23 A. V. Moiseev

We present multicolour imaging for 33 dwarf and intermediate-luminosity galaxies in the field of the NGC 5044 Group, complemented with mid-resolution spectroscopy for a subsample of 13 objects. With these data, a revised membership and…

Astrophysics · Physics 2016-08-30 Sergio A. Cellone , Alberto Buzzoni

We present a study of the HI distribution and dynamics of the nearby spiral galaxy NGC5055 based on observations with the Westerbork Synthesis Radio Telescope. The gaseous disk of NGC5055 extends out to about 40 kpc, equal to 3.5 R_25, and…

Astrophysics · Physics 2009-11-11 G. Battaglia , F. Fraternali , T. Oosterloo , R. Sancisi

In a global kinematical study of NGC 5055 using high resolution Fabry-Perot, intriguing spectral line profiles have been observed in the center of the galaxy. These profiles seem to indicate a rapidly rotating disk with a radius near 365 pc…

Astrophysics · Physics 2007-05-23 Sebastien Blais-Ouellette

We present an application of a new set of detailed, self-consistent, dynamical models for disc galaxies. We start from the hypothesis that each galaxy can be decomposed in a bulge, following the r^{1/4} law, and a disc with an exponential…

Astrophysics · Physics 2007-05-23 E. Pignatelli

BV-bands photometric data obtained at the 6-m telescope of the Special Astrophysical Observatory are used to analyze the structure of 13 large disk galaxies in the NGC 80 group. Nine of the 13 galaxies under consideration are classified by…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Marina A. Startseva , Olga K. Sil'chenko , Alexei V. Moiseev

In this paper we demonstrate the possibility of inferring the presence of Keplerian gaseous disks using optical ground-based telescopes properly equipped. We have modeled the peculiar bidimensional shape of the emission lines in a sample of…

Astrophysics · Physics 2009-10-30 F. Bertola , M. Cappellari , J. G. Funes , E. M. Corsini , A. Pizzella , J. C. Vega Beltran

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 present the results of spectroscopic observations of three S0-Sa galaxies: NGC338, NGC 3245, and NGC 5440 at the SAO RAS 6-m BTA telescope. The radial distributions of the line-of-sight velocities and radial velocity dispersions of stars…

Astrophysics of Galaxies · Physics 2012-12-07 A. V. Zasov , A. V. Khoperskov , I. Yu. Katkov , V. L. Afanasiev , S. S. Kaisin

The S0 galaxy NGC 3245 contains a circumnuclear disk of ionized gas and dust with a radius of 1.1" (110 pc), making it an ideal target for dynamical studies with the Hubble Space Telescope. We have obtained spectra of the nuclear disk with…

Astrophysics · Physics 2009-10-31 A. J. Barth , M. Sarzi , H. -W. Rix , L. C. Ho , A. V. Filippenko , W. L. W. Sargent

Combining Chandra, ALMA, EVLA, and Hubble Space Telescope archival data and newly acquired APO/DIS spectroscopy, we detect a double-lobed 17~kpc X-ray emission with plumes oriented approximately perpendicular and parallel to the galactic…

We present velocity dispersion measurements of 14 globular clusters in NGC 5128 (Centarus A) obtained with the MIKE echelle spectrograph on the 6.5m Magellan Clay telescope. These clusters are among the most luminous globular clusters in…

Astrophysics · Physics 2009-11-10 Paul Martini , Luis C. Ho

M84 is a giant elliptical galaxy located in the Virgo cluster. Prior imaging with the Hubble Space Telescope (HST) revealed a small, highly inclined, nuclear ionized gas disk, the kinematics of which indicate the presence of a 0.4 -1.5…

Cosmology and Nongalactic Astrophysics · Physics 2010-08-26 Nick Devereux , Michael Eracleous , Paul Hriljac , Andrew Shearer

We present a deep (50 hours exposed) image of the nearby spiral galaxy M 63 (NGC 5055), taken with a 0.14-m aperture telescope. The galaxy halo exhibits the known very faint system of stellar streams extending across 110 kpc. We found 5…

Astrophysics of Galaxies · Physics 2021-01-13 I. D. Karachentsev , F. Neyer , R. Späni , T. Zilch

The stellar content of the S0 galaxy NGC 5102 is investigated. A modest population of bright main sequence stars and red supergiants (RSGs) is detected throughout the western portion of the disk, and the star formation rate (SFR) during the…

Astrophysics · Physics 2009-11-13 T. J. Davidge

We report the discovery of a new dwarf galaxy, Andromeda XXVIII, using data from the recently-released SDSS DR8. The galaxy is a likely satellite of Andromeda, and, at a separation of $365^{+17}_{-1}$ kpc, would be one of the most distant…

Astrophysics of Galaxies · Physics 2015-05-30 Colin T. Slater , Eric F. Bell , Nicolas F. Martin

We have obtained deep images in the BVRIJHKs bands of the field centered on QSO 1508+5714 (z_{em} =4.28) with the Suprime camera, FOCAS and MOIRCS cameras on Subaru telescope. We report here the detection of a B-dropout galaxy, which is…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Yiping Wang , Toru Yamada , Ichi Tanaka , Masanori Iye

We have measured a velocity dispersion for the foreground galaxy in this gravitationally lensed system. Our dispersion confirms the prediction from lens models, provided that the source is distant enough ($z_{_S}>0.2$). Current…

Astrophysics · Physics 2009-10-28 J. Lehar , A. J. Cooke , C. R. Lawrence , A. D. Silber , G. I. Langston
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