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We present a global study of low mass, young stellar object (YSO) surface densities in nearby (< 500 pc) star forming regions based on a comprehensive collection of Spitzer Space Telescope surveys. We show that the distribution of YSO…

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…

Astrophysics of Galaxies · Physics 2017-04-05 Juan P. Farias , Jonathan C. Tan , Sourav Chatterjee

We present an analysis of the positions and ages of young star clusters in eight local galaxies to investigate the connection between the age difference and separation of cluster pairs. We find that star clusters do not form uniformly but…

We present a detailed clustering analysis of the young stellar population across the star-forming ring galaxy NGC 6503, based on the deep HST photometry obtained with the Legacy ExtraGalactic UV Survey (LEGUS). We apply a contour-based map…

By means of grid-based, 3D hydrodynamical simulations we study the formation of second generation (SG) stars in a young globular cluster (GC) of mass 10^7 Msun, the possible progenitor of an old GC with a present mass ~(1-5) * 10^6 Msun.…

Solar and Stellar Astrophysics · Physics 2019-08-07 F. Calura , A. D'Ercole , E. Vesperini , E. Vanzella , A. Sollima

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…

Astrophysics · Physics 2007-05-23 Soeren S. Larsen

Young massive clusters are as young as open clusters but more massive and compact compared with typical open clusters. The formation process of young massive clusters is still unclear, and it is an open question whether the formation…

Astrophysics of Galaxies · Physics 2015-06-23 Michiko S. Fujii

Aims: The purpose of this work is to study the properties of the spatial distribution of the young population in three nearby galaxies in order to better understand the first stages of star formation. Methods: We used ACS/HST photometry and…

Astrophysics of Galaxies · Physics 2021-01-04 María Jimena Rodríguez , Gustavo Baume , Carlos Feinstein

A search for stellar clusters has been carried out in 18 nearby spiral galaxies, using HST/WFPC2 archive images. All of the galaxies have previously been imaged from the ground in UBVI. A catalogue of structural parameters, photometry and…

Astrophysics · Physics 2009-11-10 Soeren S. Larsen

Young star clusters (YSCs) with resolved stellar populations are well suited for studying star-cluster formation. In most cases, the (pre-main-sequence) stellar populations found in the YSCs are coeval with an intrinsic age spread of up to…

Solar and Stellar Astrophysics · Physics 2020-03-18 Tereza Jerabkova

As the first step of a multi-wavelength investigation into the relationship between young stellar clusters and their environment we present fully-sampled maps in the J=1--0 lines of 13CO and C18O and the J=2--1 line of C18O for a selected…

Astrophysics · Physics 2009-11-07 Naomi A. Ridge , T. L. Wilson , S. T. Megeath , L. E. Allen , P. C. Myers

Recent surveys of star forming regions have shown that most stars, and probably all massive stars, are born in dense stellar clusters. The mechanism by which a molecular cloud fragments to form several hundred to thousands of individual…

Astrophysics · Physics 2009-11-07 Ian A. Bonnell , Matthew R. Bate , Stephen G. Vine

Although previous searches for star clusters have been very successful, many clusters are likely still omitted, especially at high Galactic latitude regions. In this work, based on the astrometry of Gaia EDR3, we searched nearby (parallax >…

Astrophysics of Galaxies · Physics 2022-08-31 Zhihong He , Kun Wang , Yangping Luo , Jing Li , Xiaochen Liu , Qingquan Jiang

We study the formation and early evolution of star clusters that have a wide range of masses and background cloud mass surface densities, $\Sigma_{\rm cloud}$, which help set the initial sizes, densities, and velocity dispersions of the…

Astrophysics of Galaxies · Physics 2023-06-08 Juan P. Farias , Jonathan C. Tan

Young, massive star clusters are the most notable and significant end products of violent star-forming episodes triggered by galaxy collisions, mergers, and close encounters. The question remains, however, whether or not at least a fraction…

Astrophysics · Physics 2009-11-11 Richard de Grijs

Star cluster formation is a major mode of star formation in the extreme conditions of interacting galaxies and violent starbursts. Young clusters are observed to form in a variety of such galaxies, a substantial number resembling the…

Astrophysics · Physics 2007-05-23 P. Anders , U. Fritze--v. Alvensleben , R. de Grijs

This paper is part of a project to search the inner Milky Way for hidden massive clusters and to address the question of whether our Galaxy still forms clusters similar to the progenitors of the present-day globular clusters. We report high…

Astrophysics · Physics 2009-11-10 J. Borissova , V. D. Ivanov , D. Minniti , D. Geisler , A. W. Stephens

NGC 253 hosts the nearest nuclear starburst. Previous observations show a region rich in molecular gas, with dense clouds associated with recent star formation. We used ALMA to image the 350 GHz dust continuum and molecular line emission…

We measure the projected half-light radii of young star clusters in 31 galaxies from the Legacy Extragalactic UV Survey (LEGUS). We implement a custom pipeline specifically designed to be robust against contamination, which allows us to…

Astrophysics of Galaxies · Physics 2021-10-20 Gillen Brown , Oleg Y. Gnedin

We investigate the star-formation ocurring in the region towards IRAS07527-3446 in the molecular cloud [MAB97]250.63-3.63, in the far outer Galaxy. We report the discovery of a new young stellar cluster, and describe its properties and…

Astrophysics of Galaxies · Physics 2015-05-13 Joao L. Yun , Davide Elia , Pedro M. Palmeirim , Joana I. Gomes , Andre M. Martins