中文
相关论文

相关论文: Star clusters or asterisms? 2MASS CMD and structur…

200 篇论文

The analysis of the presence of substructures in 16 well-sampled clusters of galaxies suggests a stimulating hypothesis: Clusters could be classified as unimodal or bimodal, on the basis of to the sub-clump distribution in the {\em 3-D}…

天体物理学 · 物理学 2009-10-22 E. Escalera , A. Biviano , M. Girardi , G. Giuricin , F. Mardirossian , A. Mazure , M. Mezzetti

Most star complexes are in fact complexes of stars, clusters and gas clouds; term "star complexes" was introduced as general one disregarding the preferential content of a complex. Generally the high rate of star formation in a complex is…

天体物理学 · 物理学 2007-05-23 Yu. N. Efremov

Most star complexes are in fact complexes of stars, clusters and gas clouds; term "star complexes" was introduced as general one disregarding the preferential content of a complex. Generally the high rate of star formation in a complex is…

天体物理学 · 物理学 2010-11-23 Yuri N. Efremov

Star clusters are ideal tracers of star formation activity in systems outside the volume that can be studied using individual, resolved stars. These unresolved clusters span orders of magnitude in brightness and mass, and their formation is…

宇宙学与河外天体物理 · 物理学 2011-07-20 I. S. Konstantopoulos , K. Fedotov , S. C. Gallagher , A. Maybhate , P. R. Durrell , J. C. Charlton

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…

太阳与恒星天体物理 · 物理学 2016-02-03 S. Pfalzner , H. Kirk , A. Sills , J. S. Urquhart , J. Kauffmann , M. A. Kuhn , A. Bhandare , K. M. Menten

In this paper, I review to what extent we can understand the photometric properties of star clusters, and of low-mass, unresolved galaxies, in terms of population synthesis models designed to describe `simple stellar populations' (SSPs),…

星系天体物理 · 物理学 2009-11-05 A. Gustavo Bruzual

We investigate the internal structure of clusters of galaxies in high-resolution N-body simulations of 4 different cosmologies. There is a higher proportion of disordered clusters in critical-density than in low-density universes, although…

Mass determinations are difficult to obtain and still frequently characterised by deceptively large uncertainties. We review below the various mass estimators used for star clusters of all ages and luminosities. We highlight a few recent…

天体物理学 · 物理学 2007-05-23 Georges Meylan

Populations of young star clusters show significant differences even among "normal" disk galaxies. In this contribution I discuss how properties of young cluster systems are related to those of their host galaxies, based on a recent study…

天体物理学 · 物理学 2007-05-23 Soeren S. Larsen

Star clusters stand at the intersection of much of modern astrophysics: the interstellar medium, gravitational dynamics, stellar evolution, and cosmology. Here we review observations and theoretical models for the formation, evolution, and…

星系天体物理 · 物理学 2019-09-11 Mark R. Krumholz , Christopher F. McKee , Joss Bland-Hawthorn

Open and globular star clusters have served as benchmarks for the study of stellar evolution due to their supposed nature as simple stellar populations of the same age and metallicity. After a brief review of some of the pioneering work…

星系天体物理 · 物理学 2015-05-14 Jason S. Kalirai , Harvey B. Richer

Globular clusters are large and dense agglomerate of stars. At variance with smaller clusters of stars, they exhibit signs of some chemical evolution. At least for this reason, they are intermediate between open clusters and massive objects…

太阳与恒星天体物理 · 物理学 2019-11-11 Raffaele Gratton , Angela Bragaglia , Eugenio Carretta , Valentina D'Orazi , Sara Lucatello , Antonio Sollima

The realization that most stars form in clusters, raises the question of whether star/planet formation are influenced by the cluster environment. The stellar density in the most prevalent clusters is the key factor here. Whether dominant…

星系天体物理 · 物理学 2015-06-11 S. Pfalzner , T. Kaczmarek , C. Olczak

Star clusters are fundamental units of stellar feedback and unique tracers of their host galactic properties. In this review, we will first focus on their constituents, i.e.\ detailed insight into their stellar populations and their…

This is an overview of nuclear star cluster observations, covering their structure, stellar populations, kinematics and possible connection to black holes at the centers of galaxies.

宇宙学与河外天体物理 · 物理学 2012-11-09 Nadine Neumayer

We review recent work that investigates the formation of stellar clusters, ranging in scale from globular clusters through open clusters to the small scale aggregates of stars observed in T associations. In all cases, recent advances in…

天体物理学 · 物理学 2007-05-23 Cathie J. Clarke , Ian A. Bonnell , Lynne A. Hillenbrand

We present a list of 34 neglected entries from star cluster catalogues located at relatively high galactic latitudes ($|b| >$ 15$^{\circ}$) which appear to be candidate late stages of star cluster dynamical evolution. Although…

天体物理学 · 物理学 2009-10-31 E. Bica , B. X. Santiago , C. M. Dutra , H. Dottori , M. R. de Oliveira , D. Pavani

Observations of the spatial distributions of young stars in star-forming regions can be linked to the theory of clustered star formation using spatial statistical methods. The MYStIX project provides rich samples of young stars from the…

We review recent advancements in cosmology with galaxy clusters. Galaxy clusters are the most massive objects in the Universe. Consequently the cluster number density as a function of cluster mass, or cluster abundance, is sensitive to…

宇宙学与河外天体物理 · 物理学 2025-05-13 Hironao Miyatake

By virtue of their high galaxy space densities and their large spatial separations, clusters are efficient and accurate tracers of the large-scale density and velocity fields. Substantial progress has been made over the past decade in the…

天体物理学 · 物理学 2007-05-23 Marc Postman
‹ 上一页 1 2 3 10 下一页 ›