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We explore 7.5 billion years of evolution in the star formation activity of massive ($M_{\star}>10^{10.1}\,M_{\odot}$) cluster galaxies using a sample of 25 clusters over $0.15<z<1$ from the Cluster Lensing And Supernova survey with Hubble…

Astrophysics of Galaxies · Physics 2017-01-04 Cory R. Wagner , Stephane Courteau , Mark Brodwin , S. A. Stanford , Gregory F. Snyder , Daniel Stern

This paper is part of a series devoted to the study of the stellar populations in brightest cluster galaxies (BCGs), aimed at setting constraints on the formation and evolution of these objects. We have obtained high signal-to-noise ratio,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 S. I. Loubser , P. Sanchez-Blazquez , A. E. Sansom , I. K. Soechting

Nuclear rings are long-lived structures, allowing the molecular gas inside to become sufficiently dense to initiate star formation. This makes them a crucial element in the study of secular evolution. However, the morphology of nuclear…

Astrophysics of Galaxies · Physics 2025-07-15 P. Jiménez-Sánchez , S. Comerón , A. Prieto , J. H. Knapen

We present a study of the spatial distribution of the stellar cluster populations in the star forming galaxy NGC 628. Using Hubble Space Telescope broad band WFC3/UVIS UV and optical images from the Treasury Program LEGUS (Legacy…

We present a detailed study of the star cluster population detected in the galaxy NGC922, one of the closest collisional ring galaxies known to date, using HST/WFPC2 UBVI photometry, population synthesis models, and N-body/SPH…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Anne Pellerin , Gerhardt R. Meurer , Kenji Bekki , Debra M. Elmegreen , O. Ivy Wong , Patricia M. Knezek

We present high spatial resolution near-infrared broad-band JHK and Br_gamma 2.166 micron and H_2 1-0 S(1) 2.121 micron emission line images of the circumnuclear star formation rings in the LINER/Seyfert 1 galaxy NGC 1097 and the Seyfert 2…

Astrophysics · Physics 2009-10-31 J. K. Kotilainen , J. Reunanen , S. Laine , S. D. Ryder

We present new HST I-band images of a sample of 77 nearby, late-type spiral galaxies with low inclination. The main purpose of this catalog is to study the frequency and properties of nuclear star clusters. In 59 galaxies of our sample, we…

We present an analysis of young star clusters (YSCs) that form in the E-MOSAICS cosmological, hydrodynamical simulations of galaxies and their star cluster populations. Through comparisons with observed YSC populations, this work aims to…

We present a catalogue of photometric and structural properties of 228 nuclear star clusters (NSCs) in nearby late-type disk galaxies. These new measurements are derived from a homogeneous analysis of all suitable WFPC2 images in the $HST$…

Astrophysics of Galaxies · Physics 2015-06-19 Iskren Y. Georgiev , Torsten Böker

The relationship between an active galactic nucleus (AGN) and its host galaxy is still far from being understood. Properties of the host galaxies of Seyfert nuclei, such as luminosity concentration, morphological type, metallicity, and age…

Astrophysics of Galaxies · Physics 2025-03-19 Isabel Marquez , Catherine Boisson , Monique Joly , Didier Pelat , Florence Durret

We have studied the unbarred Sb galaxy with a nuclear star-forming ring, NGC 7742, by means of 2D spectroscopy, long-slit spectroscopy, and imaging, and have compared the results with the properties of another galaxy of this type, NGC 7217,…

Astrophysics · Physics 2008-11-26 O. K. Sil'chenko , A. V. Moiseev

Stars form predominantly in groups usually denoted as clusters or associations. The observed stellar groups display a broad spectrum of masses, sizes and other properties, so it is often assumed that there is no underlying structure in this…

Solar and Stellar Astrophysics · Physics 2016-02-03 S. Pfalzner , H. Kirk , A. Sills , J. S. Urquhart , J. Kauffmann , M. A. Kuhn , A. Bhandare , K. M. Menten

As a result of bidimensional spectroscopy of the central parts of two nearby lenticular galaxies, NGC 1023 and NGC 7332, undertaken with the Multi-Pupil Field Spectrograph of the 6m telescope of the Special Astrophysical Observatory, their…

Astrophysics · Physics 2009-10-31 Olga K. Sil'chenko

We review our current understanding of nuclear stellar discs (NSDs), rotating, and flattened stellar structures found in the central regions of both early- and late-type galaxies. We examine their demographics, kinematics, stellar…

Astrophysics of Galaxies · Physics 2025-09-16 Mathias Schultheis , Mattia C. Sormani , Dimitri A. Gadotti

We have identified 1027 star forming complexes in a sample of 46 galaxies from the Spirals, Bridges, and Tails (SB&T) sample of interacting galaxies, and 693 star forming complexes in a sample of 38 non-interacting spiral (NIS) galaxies in…

We present scaling relations between structural properties of nuclear star clusters and their host galaxies for a sample of early-type dwarf galaxies observed as part of the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS)…

Young super star clusters and young compact massive star forming regions can provide useful information on their burst properties (age, burst duration, SFR), the upper end of the IMF and yield new constraints on the evolution of massive…

Astrophysics · Physics 2007-05-23 Daniel Schaerer , Natalia G. Guseva , Yuri I. Izotov

The stellar population and star clusters around six regions in the Large Magellanic Cloud (LMC) are studied to understand the correlation between star formation and cluster formation rates. We used the stellar database of the OGLE II LMC…

Astrophysics · Physics 2009-11-10 Annapurni Subramaniam

Small kinematically-decoupled stellar discs with scalelengths of a few tens of parsec are known to reside in the centre of galaxies. Different mechanisms have been proposed to explain how they form, including gas dissipation and merging of…

Astrophysics of Galaxies · Physics 2016-02-17 E. M. Corsini , L. Morelli , N. Pastorello , E. Dalla Bontà , A. Pizzella , E. Portaluri

Nuclear star clusters (NSCs) are massive star clusters found ubiquitously in the centres of galaxies, from the dwarf regime to massive ellipticals and spirals. The fraction of nucleated galaxies is as high as $>$ 90 % at $M_{\text{gal}}…

Astrophysics of Galaxies · Physics 2022-03-14 Katja Fahrion , Ryan Leaman , Mariya Lyubenova , Glenn van de Ven
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