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Related papers: Compact Stellar Systems around NGC 1399

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In a spectroscopic survey of the Fornax cluster to Bj=17.5 using the FLAIR spectrograph on the UK Schmidt Telescope we have discovered seven new compact dwarf cluster members. These were previously thought to be giant background spirals.…

Astrophysics · Physics 2007-05-23 M. J. Drinkwater , M. D. Gregg , R. M. Smith

Using a counter-dispersed slitless spectroscopy technique, we detect and measure the line-of-sight velocities of 187 planetary nebulae (PNe) around one of the nearest cD galaxies, NGC 1399, with FORS1 on the VLT. We describe the method for…

Cosmology and Nongalactic Astrophysics · Physics 2010-09-10 Emily McNeil , Magda Arnaboldi , Ken Freeman , Ortwin Gerhard , Lodovico Coccato , Payel Das

Aim: To extend the investigations of ultra-compact dwarf galaxies (UCDs) beyond the well studied Fornax and Virgo clusters. Methods: We measured spectroscopic redshifts of about 400 compact object candidates with 19.2 < V < 22.4 mag in the…

Astrophysics · Physics 2009-11-13 S. Mieske , M. Hilker , A. Jordan , L. Infante , M. Kissler-Patig

We present a study of the dynamical properties of 125 compact stellar systems (CSSs) in the nearby giant elliptical galaxy NGC5128, using high-resolution spectra (R 26,000) obtained with VLT/FLAMES. Our results provide evidence for a new…

Astrophysics of Galaxies · Physics 2015-05-27 Matthew Taylor , Thomas Puzia , Matias Gomez , Kristin Woodley

Accurate and radially extended stellar kinematic data reaching R=97'' from the center are presented for the cD galaxy of Fornax, NGC 1399. The stellar rotation is small (<= 30 km/s); the stellar velocity dispersion remains constant at…

Astrophysics · Physics 2009-10-31 R. P. Saglia , Andi Kronawitter , Ortwin Gerhard , Ralf Bender

Ultra-compact dwarf galaxies (UCDs) were serendipitously discovered by spectroscopic surveys in the Fornax cluster twenty years ago. Nowadays, it is commonly accepted that many bright UCDs are the nuclei of galaxies that have been stripped.…

The HST ACS Coma Cluster Treasury Survey is a deep two passband imaging survey of the nearest very rich cluster of galaxies, covering a range of galaxy density environments. The imaging is complemented by a recent wide field redshift survey…

We present far-UV spectroscopy of the giant elliptical galaxy NGC 1399, obtained with the Far Ultraviolet Spectroscopic Explorer. Of all quiescent ellipticals, NGC 1399 has the strongest known ``UV upturn'' -- a sharp spectral rise…

Astrophysics · Physics 2009-11-07 Thomas M. Brown , Henry C. Ferguson , Robert W. O'Connell , Raymond G. Ohl

The Fornax cluster galaxies NGC 1399 and NGC 1404 are ideal for studying the effects of a cluster environment on globular cluster systems. Here we present new optical imaging of these two galaxies from both the Hubble Space Telescope's Wide…

Astrophysics · Physics 2009-10-30 Duncan Forbes , Carl Grillmair , Gerard Williger , R. Elson , Jean Brodie

Two low surface brightness (LSB) dwarf galaxies were identified recently as having little or no dark matter (DM), provoking widespread interest in their formation histories. These galaxies also host populous systems of star clusters that…

Astrophysics of Galaxies · Physics 2024-08-26 Aaron J. Romanowsky , Enrique Cabrera , Steven R. Janssens

We present a detailed analysis of two-band HST/ACS imaging of 21 ultra-compact dwarf (UCD) galaxies in the Virgo and Fornax Clusters. The aim of this work is to test two formation hypotheses for UCDs--whether they are bright globular…

In the core of the Fornax cluster, on the West side of NGC1399, we have detected a previously unknown region of intra-cluster light (ICL). It is made up by several faint ($\mu_r \simeq 28 - 29$~mag/arcsec$^2$) {\it patches} of diffuse…

We report on the {\it Chandra} observations of the elliptical galaxy NGC 1399, concentrating on the X-ray sources identified with globular clusters (GCs). A large fraction of the 2-10 keV X-ray emission in the $8' \times 8'$ {\it Chandra}…

Astrophysics · Physics 2019-08-17 Lorella Angelini , Michael Loewenstein , Richard F. Mushotzky

(Abridged) We report a discovery of possible large-scale structures around the RDCS J1252.9-2927 cluster at z=1.24 based on photometric redshifts. We carried out multi-band wide-field imaging with Suprime-Cam on the Subaru Telescope and…

The merger remnant NGC 1316 (Fornax A) is one of the most important objects regarding the investigation of merger-related processes. We use kinematical data of globular clusters (GCs) and the diffuse stellar light to investigate the global…

Astrophysics of Galaxies · Physics 2014-09-17 Tom Richtler , Michael Hilker , Brijesh Kumar , Lilia P. Bassino , Matias Gomez , Boris Dirsch

Redshift Survey Compact Groups (RSCGs) are tight knots of N >= 3 galaxies selected from the CfA2+SSRS2 redshift survey. The selection is based on physical extent and association in redshift space alone. We measured 300 new redshifts of…

Astrophysics · Physics 2009-10-30 E. J. Barton , R. R. de Carvalho , M. J. Geller

We present the first dynamical analysis of a galaxy cluster to include a large fraction of dwarf galaxies. Our sample of 108 Fornax Cluster members measured with the UK Schmidt Telescope FLAIR-II spectrograph contains 55 dwarf galaxies…

Astrophysics · Physics 2009-10-31 M. J. Drinkwater , M. D. Gregg , M. Colless

Understanding faint dwarf galaxies is fundamental to the development of a robust theory of galaxy formation on small scales. Since the discovery of a population of ultra diffuse galaxies (UDGs) rich in globular clusters (GCs) in Coma, an…

We present 8 bright globular clusters and/or objects of less familiar nature which we found in the course of scrutinizing the globular cluster system of NGC 1399. These objects are morphologically striking, either by their sizes or by other…

Astrophysics · Physics 2009-11-11 T. Richtler , B. Dirsch , S. Larsen , M. Hilker , L. Infante

NGC 1316 (Fornax A) is a prominent merger remnant in the outskirts of the Fornax cluster. The cluster system has not yet been studied in its entirety. We therefore present a wide-field study of the globular cluster system of NGC 1316,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 T. Richtler , L. P. Bassino , B. Dirsch , B. Kumar