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Related papers: Deconstructing the Antlia cluster core

200 papers

We present radial velocities for 85 cool stars projected onto the central parsec of the Galaxy. The majority of these velocities have relative errors of $\sim$1 km/s, or a factor of $\sim$30-100 smaller than those previously obtained with…

Astrophysics · Physics 2009-11-10 Donald F. Figer

The peculiar radial velocities of eight clusters of galaxies, as determined from a variety of distance indicators, are consistent with a bulk flow not greatly different in direction and magnitude from the velocity vector of the Local Group…

Astrophysics · Physics 2007-05-23 Donald H. Gudehus

A kinematical analysis applied to a sample of galaxy clusters indicates that the differences between the velocity distribution of elliptical and spiral galaxies are associated with the shape of their orbit families. The orbital anisotropies…

Astrophysics · Physics 2016-08-30 A. C. Ramirez , R. E. de Souza

As a part of our galaxy-cluster redshift survey, we present a set of 80 new velocities in the 4 clusters Abell 376, Abell 970, Abell 1356, and Abell 2244, obtained at Haute-Provence observatory. This set now completes our previous analysis,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Dominique Proust , Hugo V. Capelato , Gastao B. Lima Neto , Laerte Sodre

We present a statistical isophotal analysis of 138 early-type galaxies in the Antlia cluster, located at a distance of ${\sim} 35$ Mpc. The observational material consists of CCD images of four $36$ arcmin ${\times} 36$ arcmin fields…

Astrophysics of Galaxies · Physics 2018-03-13 Juan P. Calderón , Lilia P. Bassino , Sergio A. Cellone , Matías Gómez

By combining high spatial resolution and wide-field spectroscopy performed, respectively, with SINFONI and FLAMES at the ESO/VLT we measured the radial velocities of more than 600 stars in the direction of NGC 6388, a Galactic globular…

Solar and Stellar Astrophysics · Physics 2015-06-15 B. Lanzoni , A. Mucciarelli , L. Origlia , M. Bellazzini , F. R. Ferraro , E. Valenti , P. Miocchi , E. Dalessandro , C. Pallanca , D. Massari , -

We confirm the existence of two compact elliptical (cE) galaxies in the central region of the Antlia cluster through MAGELLAN-MIKE and GEMINI-GMOS spectra. Only about a dozen galaxies of this rare type are known today up to a distance of…

Cosmology and Nongalactic Astrophysics · Physics 2010-02-23 Analia V. Smith Castelli , Favio R. Faifer , Lilia P. Bassino , Gisela A. Romero , Sergio A. Cellone , Tom Richtler

In preceding papers of this series, TF relations for galaxies in 24 clusters with radial velocities between 1000 and 9200 km/s (SCI sample) were obtained, a Tully-Fisher (TF) template relation was constructed and mean offsets of each…

Astrophysics · Physics 2009-10-30 R. Giovanelli , M. Haynes , J. Salzer , G. Wegner , L. da Costa , W. Freudling

NGC 3311, the central galaxy of the Hydra I cluster, shows signatures of recent infall of satellite galaxies from the cluster environment. Previous work has shown that the line-of-sight velocity dispersion of the stars and globular clusters…

Astrophysics of Galaxies · Physics 2018-11-14 M. Hilker , T. Richtler , C. E. Barbosa , M. Arnaboldi , L. Coccato , C. Mendes de Oliveira

We present new radial velocity measurements of 586 stars in a one-degree field centered on the open cluster M46, and the planetary nebula NGC 2438 located within a nuclear radius of the cluster. The data are based on medium-resolution…

Astrophysics · Physics 2009-11-13 L. L. Kiss , Gy. M. Szabo , Z. Balog , Q. A. Parker , D. J. Frew

We present a spectroscopic study of the globular clusters (GCs) in the giant elliptical galaxy NGC 4636 in the Virgo cluster. We selected target GC candidates using the Washington photometry derived from the deep CCD images taken at the…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Hong Soo Park , Myung Gyoon Lee , Ho Seong Hwang , Nobuo Arimoto , Naoyuki Tamura , Masato Onodera

We present the first dynamical study of the globular cluster system of NGC 4636. This giant elliptical galaxy is claimed to be extremely dark matter dominated, according to X-ray observations. Using the VLT with FORS2/MXU, we obtained…

Astrophysics · Physics 2009-11-11 Y. Schuberth , T. Richtler , B. Dirsch , M. Hilker , S. S. Larsen , M. Kissler-Patig , U. Mebold

We use a Kernel Density Estimator method to evaluate the stellar velocity dispersion in the open cluster NGC 2571. We derive the 3-D velocity dispersion using both proper motions as extracted from Gaia DR3 and single epoch radial velocities…

Clusters and groups of galaxies are highly aspherical, with shapes approximated by nearly prolate ellipsoids of revolution. An equally fundamental property is the shape of these objects in velocity space which is the anisotropy of the…

Cosmology and Nongalactic Astrophysics · Physics 2014-01-30 Radoslaw Wojtak

The recently discovered Antlia dwarf galaxy in analyzed using VI photometry. The galaxy is resolved into a large number of stars and although the galaxy is intrinsically faint and low surface brightness, its stellar populations reveal…

Astrophysics · Physics 2009-09-25 A. Aparicio , J. J. Dalcanton , C. Gallart , D. Martinez-Delgado

The June 2004 version of our compilation of measured redshifts for clusters in the Abell-ACO catalogue lists redshifts for 3715 clusters/subclusters in 3033 distinct (2396 A- and 637 S-) clusters, 67% of these with N_z>=3 galaxies measured.…

Astrophysics · Physics 2007-05-23 H. Andernach , E. Tago , M. Einasto , J. Einasto , J. Jaaniste

We present a detailed study of the cluster CL 0048-2942, located at z~0.64, based on a photometric and spectroscopic catalogue of 54 galaxies in a 5 x 5 square arcmin region centred in that cluster. Of these, 23 galaxies were found to…

Astrophysics · Physics 2009-11-10 M. Serote Roos , C. Lobo , F. Durret , A. Iovino , I. Marquez

We present new radial velocities from AAOmega on the Anglo-Australian Telescope for 307 galaxies (b_J < 19.5) in the region of the rich cluster Abell 1386. Consistent with other studies of galaxy clusters that constitute sub-units of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Kevin A. Pimbblet , Heinz Andernach , Cherie K. Fishlock , Isaac G. Roseboom , Matthew S. Owers

We present radial velocities for approximately 40 stars in each of three optically obscured, off-axis, fields toward the Galactic bulge. Combined with the data presented by Blum et al. (1994), we now have mean radial velocities and radial…

Astrophysics · Physics 2016-08-30 Robert Blum , John Carr , Kris Sellgren , Don Terndrup

Radial velocities are presented for a new sample of globular clusters in the outer halo of M87 at a distance of 300 to 540 arcsec (24 to 43 kpc) from the center of this galaxy. These are used to augment our previously published data and an…

Astrophysics · Physics 2009-10-31 Judith G. Cohen