English
Related papers

Related papers: HCG 16 Revisited: Clues About Galaxy Evolution in …

200 papers

CG J1720-67.8 is an ultra compact group of several galaxies with a low velocity dispersion, and displaying the hallmarks of mutual interaction and possible tidal dwarf galaxy formation. In hierarchical models, the system is a possible…

Astrophysics · Physics 2009-11-10 S. Temporin , L. Staveley-Smith , F. Kerber

Using the WiFeS integral field spectrograph, we have undertaken a series of observations of star-forming galaxies in Compact Groups. In this first paper dedicated to the project, we present the analysis of the spiral galaxy NGC838, a member…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Frédéric P. A. Vogt , Michael A. Dopita , Lisa J. Kewley

Compact groups of galaxies appear to be extremely dense, making them likely sites of intense galaxy interaction, while their small populations make them relatively simple to analyze. In order to search for optical interaction tracers such…

Astrophysics · Physics 2009-10-28 Rachel A. Pildis , Joel N. Bregman , James M. Schombert

We present a comprehensive study on the impact of the environment of compact galaxy groups on the evolution of their members using a multi-wavelength analysis, from the UV to the infrared, for a sample of 32 Hickson compact groups (HCGs)…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 T. Bitsakis , V. Charmandaris , E. da Cunha , T. Diaz-Santos , E. Le Floc'h , G. Magdis

We have conducted a new spectroscopic survey to characterize the nature of nuclear activity in Hickson Compact Groups (HCGs) galaxies and establish its frequency. We have obtained new intermediate resolution optical spectroscopy for 200…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 M. A. Martinez , A. del Olmo , R. Coziol , J. Perea

Isolated compact groups of galaxies (CGs) present a range of dynamical states, group velocity dispersions, and galaxy morphologies with which to study galaxy evolution, particularly the properties of gas both within the galaxies and in the…

We have carried out surface photometry of four bright known members and a number of new possible LSB companions of the IC 65 (LGG 16) group of galaxies. The purpose of the present study is twofold: (a) a search for new LSB dwarf members and…

Astrophysics · Physics 2007-05-23 J. Vennik , U. Hopp

We present a photometric catalogue of star cluster candidates in Hickson compact groups (HCGs) 7, 31, 42, 59, and 92, based on observations with the Advanced Camera for Surveys and the Wide Field Camera 3 on the Hubble Space Telescope. The…

Astrophysics of Galaxies · Physics 2015-06-24 K. Fedotov , S. C. Gallagher , P. R. Durrell , N. Bastian , I. S. Konstantopoulos , J. Charlton , K. E. Johnson , R. Chandar

We present an imaging survey of the CO(1--0), HCN(1--0), and HCO$^+$(1--0) lines in the nearby Seyfert galaxies using the Nobeyama Millimeter Array and RAINBOW Interferometer. Some of the observed Seyfert galaxies including NGC 1068, NGC…

Astrophysics · Physics 2009-11-13 K. Kohno

We use multi-fiber spectroscopy of 12 nearby, poor groups of galaxies to address whether the groups are bound systems or chance projections of galaxies along the line-of-sight, why the members of each group have not already merged to form a…

Astrophysics · Physics 2009-10-30 Ann I. Zabludoff , John S. Mulchaey

We present multi-object spectroscopy of the inner zone of the globular cluster (GC) system associated with the intermediate-age merger remnant NGC 1316. Using the multi-object mode of the GMOS camera, we obtained spectra for 35 GCs. We find…

Astrophysics of Galaxies · Physics 2018-06-04 Leandro A. Sesto , Favio R. Faifer , Analía V. Smith Castelli , Juan C. Forte , Carlos G. Escudero

Compact groups of galaxies have posed a number of challenging questions. Intensive observational and theoretical studies are now providing answers to many of these, and at the same time, are revealing unexpected new clues about the nature…

Astrophysics · Physics 2009-10-30 Paul Hickson

This paper is part of a series devoted to a detailed analysis of the properties of the compact group CG J1720-67.8 and its member galaxies with the aim of sheding light on its evolutionary history. Here we interpret our previously published…

Astrophysics · Physics 2009-11-11 S. Temporin , U. Fritze-v. Alvensleben

In this second paper of two analyses, we present near-infrared (NIR) morphological and asymmetry studies performed in sample of 92 galaxies found in different density environments: galaxies in Compact Groups (HCGs), Isolated Pairs of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 I. Plauchu-Frayn , R. Coziol

The very high apparent galaxy densities in Hickson compact groups (HCGs) should produce copious amounts of galaxy-galaxy interaction, if these groups are bound dynamical units. I examine the evidence for such interactions in HCG 94, a group…

Astrophysics · Physics 2009-10-28 Rachel A. Pildis

Galaxies in Hickson Compact Group 91 (HCG 91) were observed with the WiFeS integral field spectrograph as part of our ongoing campaign targeting the ionized gas physics and kinematics inside star forming members of compact groups. Here, we…

Astrophysics of Galaxies · Physics 2015-05-20 F. P. A. Vogt , M. A. Dopita , S. Borthakur , L. Verdes-Montenegro , T. M. Heckman , M. S. Yun , K. C. Chambers

We study the formation of over 6000 compact groups (CGs) of galaxies identified in mock redshift-space galaxy catalogues built from semi-analytical models of galaxy formation (SAMs) run on the Millennium Simulations. We select CGs of 4…

Astrophysics of Galaxies · Physics 2021-03-24 Eugenia Diaz-Gimenez , Ariel Zandivarez , Gary Mamon

By means of panoramic spectroscopy at the SAO RAS BTA telescope, we investigated the properties of stellar populations in the central regions of five early-type galaxies -- the NGC 524 group members. The evolution of the central regions of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Olga K. Sil'chenko , Victor L. Afanasiev

We have studied the globular cluster (GC) systems of 7 giant, edge-on spiral galaxies using Hubble Space Telescope imaging in V and I. The galaxy sample covers the Hubble types Sa to Sc, allowing us to study the variation of the properties…

We present the sixth list with results of the Hamburg/SAO Survey for Emission-Line Galaxies. The final list resulted from follow-up spectroscopy conducted with the 4.5m MMT telescope in 1996, and with 2.2m CAHA and 6m SAO telescopes in 2000…