中文
相关论文

相关论文: SPYGLASS. VI. Feedback-Driven Star Formation in th…

200 篇论文

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…

天体物理学 · 物理学 2009-11-07 Ian A. Bonnell , Matthew R. Bate , Stephen G. Vine

We explore the kinematics and star formation history of the Scorpius Centaurus (Sco-Cen) OB association following the initial identification of sequential, linearly aligned chains of clusters. Building upon our characterization of the…

We present a new implementation of star formation in cosmological simulations, by considering star clusters as a unit of star formation. Cluster particles grow in mass over several million years at the rate determined by local gas…

星系天体物理 · 物理学 2017-01-11 Hui Li , Oleg Y. Gnedin , Nickolay Y. Gnedin , Xi Meng , Vadim A. Semenov , Andrey V. Kravtsov

[abridged] How does a star cluster of more than few 10,000 solar masses form? We present the case of the cluster NGC 346 in the Small Magellanic Cloud, and its star-forming region N66, and we propose a scenario for its formation, based on…

星系天体物理 · 物理学 2015-11-03 Dimitrios A. Gouliermis , Sacha Hony

A large sample of young stellar groups is analysed aiming to investigate their clustering properties and dynamical evolution. A comparison of the Q statistical parameter, measured for the clusters, with the fractal dimension estimated for…

太阳与恒星天体物理 · 物理学 2015-06-23 J. Gregorio-Hetem , A. Hetem , T. Santos-Silva , B. Fernandes

We present an analysis of the spatial distribution of various stellar populations within the Large and Small Magellanic Clouds. We use optically selected stellar samples with mean ages between ~9 and ~1000 Myr, and existing stellar cluster…

天体物理学 · 物理学 2015-12-24 N. Bastian , M. Gieles , B. Ercolano , R. Gutermuth

Star cluster formation is unlikely to be a sudden event: instead, matter will flow to a cluster's formation site over an extended period, even as stars form and inject energy to the region. A cluster's gaseous precursor must persist under…

星系天体物理 · 物理学 2017-12-06 Christopher D. Matzner

We summarize some of the results obtained from Herschel surveys of the nearby star forming regions and the Galactic plane. We show that in the nearby star forming regions the starless core spatial surface density distribution is very…

星系天体物理 · 物理学 2015-06-12 Leonardo Testi , Eli Bressert , S. Longmore

It is generally assumed that a large fraction of stars are initially born in clusters. However, a large fraction of these disrupt on short timescales and the stars end up belonging to the field. Understanding this process is of paramount…

宇宙学与河外天体物理 · 物理学 2015-05-18 E. Silva-Villa , S. S. Larsen

We show that the termination of the star formation process by winds from massive stars in protocluster forming clumps imposes dual constraints on the star formation efficiencies (SFEs) and stellar age spreads ($\Delta \tau_{*}$) in stellar…

星系天体物理 · 物理学 2015-06-16 Sami Dib , Julia Gutkin , Wolfgang Brandner , Shantanu Basu

We address the nature and origin of a spiral disk at the center of NGC 1275, the giant elliptical galaxy at the center of the Perseus cluster, that spans a radius of $\sim$$5\,\rm kpc$. By comparing stellar absorption lines measured in…

星系天体物理 · 物理学 2022-03-11 Michael C. H. Yeung , Youichi Ohyama , Jeremy Lim

The properties of young star clusters formed within a galaxy are thought to vary in different interstellar medium (ISM) conditions, but the details of this mapping from galactic to cluster scales are poorly understood due to the large…

Starbursts produce large numbers of Young Star Clusters (YSCs). Multi-color photometry in combination with a dedicated SED analysis tool allows to derive ages, metallicities, ${\rm E_{B-V}}$, and masses including $1 \sigma$ uncertainties…

天体物理学 · 物理学 2015-11-11 Uta Fritze -- v. Alvensleben

Using Spitzer Space Telescope and Chandra X-ray Observatory data, we identify YSOs in the Rosette Molecular Cloud (RMC). By being able to select cluster members and classify them into YSO types, we are able to track the progression of star…

太阳与恒星天体物理 · 物理学 2015-06-15 Jason E. Ybarra , Elizabeth A. Lada , Carlos G. Román-Zúñiga , Zoltan Balog , Junfeng Wang , Eric D. Feigelson

NGC 1808 is a nearby barred spiral galaxy which hosts young stellar clusters in a patchy circumnuclear ring with a radius of $\sim 240\,\mathrm{pc}$. In order to study the gaseous and stellar kinematics and the star formation properties of…

The existence of complex stellar populations in some star clusters challenges the understanding of star formation. E.g. the ONC or the sigma Orionis cluster host much older stars than the main bulk of the young stars. Massive star clusters…

天体物理学 · 物理学 2009-11-13 Jan Pflamm-Altenburg , Pavel Kroupa

The accretion of metal-poor gas sustains galactic star formation. In the Milky Way, this process is fueled by high-velocity clouds (HVCs), yet their fundamental properties have remained elusive in the absence of stellar tracers. Here we…

星系天体物理 · 物理学 2026-03-12 Zhihong He , Wenkang Pang , Kun Wang , Yangping Luo , Qian Cui

Recent studies suggest that most star-forming regions in our Galaxy form stellar associations rather than bound clusters. We analyse models from the STARFORGE simulation suite, a set of magneto-hydrodynamical simulations that include all…

星系天体物理 · 物理学 2025-06-03 Juan P. Farias , Stella S. R. Offner , Ronan Kerr , Michael Y. Grudić

We present a study of the properties of the star-cluster systems around pseudo-bulges of late-type spiral galaxies using a sample of 11 galaxies with distances from 17 to 37 Mpc. Star clusters are identified from multiband HST ACS and WFPC2…

宇宙学与河外天体物理 · 物理学 2015-05-14 Daiana Di Nino , Michele Trenti , Massimo Stiavelli , C. Marcella Carollo , Claudia Scarlata , Rosemary F. G. Wyse

Despite their close proximity, the complex interplay between the two Magellanic Clouds, the Milky Way, and the resulting tidal features, is still poorly understood. Recent studies have shown that the Large Magellanic Cloud (LMC) has a very…