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相关论文: Massive Star Cluster Formation and Destruction in …

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The starlight coming from the intergalactic space in galaxy clusters and groups witnesses the violent tidal interactions that galaxies experience in these dense environments. Such interactions may be (at least partly) responsible for the…

天体物理学 · 物理学 2009-11-11 Stefano Zibetti , Simon D. M. White

We discuss the clustering properties of galaxies with signs of ongoing star formation detected by the Spitzer Space Telescope at 24mum band in the SWIRE Lockman Hole field. The sample of mid-IR-selected galaxies includes ~20,000 objects…

宇宙学与河外天体物理 · 物理学 2012-05-30 S. Starikova , S. Berta , A. Franceschini , L. Marchetti , G. Rodighiero , M. Vaccari , A. Vikhlinin

We present results of age determination based on the standard procedure of isochrone fitting for about 600 star clusters younger than about 1.2 Gyr from the central parts of the LMC. Comparison of age distributions of star clusters from the…

天体物理学 · 物理学 2007-05-23 G. Pietrzynski , A. Udalski

This work studies the environments and star formation relationships of local luminous infrared galaxies (LIRG) in comparison to other types of local and distant (z~1) galaxies. The infrared (IR) galaxies are drawn from the IRAS sample. The…

宇宙学与河外天体物理 · 物理学 2015-05-27 Abiy G. Tekola , Petri Vaisanen , Andreas Berlind

We have obtained high-dispersion spectra for four massive star clusters in the dwarf irregular galaxies NGC 4214 and NGC 4449, using the HIRES spectrograph on the Keck I telescope. Combining the velocity dispersions of the clusters with…

天体物理学 · 物理学 2009-11-10 S. S. Larsen , J. P. Brodie , D. A. Hunter

We have performed a deep multi-band photometric analysis of the star cluster population of Haro 11. This starburst galaxy (log L_FUV = 10.3 L_sun) is considered a nearby analogue of Lyman break galaxies (LBGs) at high redshift. The study of…

宇宙学与河外天体物理 · 物理学 2009-08-24 Angela Adamo , Göran Östlin , Erik Zackrisson , Matthew Hayes

We investigate the intra-cluster light (ICL) in the 6 Hubble Frontier Field clusters at $0.3<z<0.6$. We employ a new method, which is free from any functional form of the ICL profile, and exploit the unprecedented depth of this Hubble Space…

星系天体物理 · 物理学 2017-09-20 Takahiro Morishita , Louis E. Abramson , Tommaso Treu , Kasper B. Schmidt , Benedetta Vulcani , Xin Wang

HST is very well tailored for observations of extragalactic star clusters. One obvious reason is HST's high spatial resolution, but equally important is the wavelength range offered by the instruments on board HST, in particular the blue…

天体物理学 · 物理学 2007-05-23 S. S. Larsen

Using the Spitzer IRAC camera we have obtained mid-IR photometry of the red giant branch stars in the Galactic globular cluster 47 Tuc. About 100 stars show an excess of mid-infrared light above that expected from their photospheric…

Context: The combination of optical and near-infrared (NIR) colours has the potential to break the age/metallicity degeneracy and offers a better metallicity sensitivity than optical colours alone. Previous studies of extragalactic globular…

宇宙学与河外天体物理 · 物理学 2015-05-20 A. L. Chies-Santos , S. S. Larsen , E. M. Wehner , H. Kuntschner , J. Strader , J. P. Brodie

We determine the galaxy infrared (IR) luminosity function (LF) as a function of the environment in a supercluster at z=0.23, using optical, near-IR, and mid- to far-IR photometry, as well as redshifts from optical spectroscopy. We identify…

宇宙学与河外天体物理 · 物理学 2015-05-28 A. Biviano , D. Fadda , F. Durret , L. O. V. Edwards , F. Marleau

We present a statistical analysis of a sample of 20 strong lensing clusters drawn from the Local Cluster Substructure Survey (LoCuSS), based on high resolution Hubble Space Telescope imaging of the cluster cores and follow-up spectroscopic…

An analysis of the star cluster population in a low-luminosity early type galaxy, NGC 2328, is presented. The clusters are found in a tight star-forming nuclear spiral/ring pattern and we also identify a bar from structural 2D…

星系天体物理 · 物理学 2015-06-23 Petri Vaisanen , Sudhanshu Barway , Zara Randriamanakoto

This study presents a comprehensive analysis of the youngest stellar clusters in the Large Magellanic Cloud (LMC), utilising a multi-wavelength approach. We analyse data spanning from infrared to ultraviolet wavelengths, with the goal of…

星系天体物理 · 物理学 2025-03-13 Ricardo Chávez , Rosa Amelia González-Lópezlira , Gustavo Bruzual

We investigate the formation and early evolution of star clusters assuming that they form from a turbulent starless clump of given mass bounded inside a parent self-gravitating molecular cloud characterized by a particular mass surface…

星系天体物理 · 物理学 2017-04-05 Juan P. Farias , Jonathan C. Tan , Sourav Chatterjee

In order to empirically determine the timescale and environmental dependence of stellar cluster disruption, we have undertaken an analysis of the unprecedented multi-pointing (seven), multi-wavelength (U, B, V, H$\alpha$, and I) Hubble…

星系天体物理 · 物理学 2015-06-18 E. Silva-Villa , A. Adamo , N. Bastian , M. Fouesneau , E. Zackrisson

We present a survey of 130 Galactic and extragalactic young massive clusters (YMCs, $10^4 < M/\msun < 10^8$, $10 < t/{\rm Myr} < 1000$) with integrated spectroscopy or resolved stellar photometry (40 presented here and 90 from the…

宇宙学与河外天体物理 · 物理学 2015-06-17 N. Bastian , I. Cabrera-Ziri , B. Davies , S. S. Larsen

We have introduced a semi-automated quantitative method to estimate the age and reddening of 1072 star clusters in the Large Magellanic Cloud (LMC) using the Optical Gravitational Lensing Experiment (OGLE) III survey data. This study brings…

星系天体物理 · 物理学 2016-08-24 P. K. Nayak , A. Subramaniam , S. Choudhury , G. Indu , Ram Sagar

With Hubble Space Telescope imaging, we investigate the progenitor population and formation mechanisms of the intracluster light (ICL) for 23 galaxy groups and clusters ranging from 3$\times10^{13}<$M$_{500,c}$ [M$_\odot$]$<9\times10^{14}$…

Archival WFC3/UVIS imaging of Arp 299 (NGC 3690E + NGC 3690W) is retrieved to investigate the young massive cluster (YMC) population of this ongoing merger. We extract 2182 cluster candidates, including 1323 high confidence photometric…

星系天体物理 · 物理学 2018-10-24 Zara Randriamanakoto , Petri Väisänen , Stuart D. Ryder , Princy Ranaivomanana