Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"Stellar clusters"”.
-
Secular Dynamics of Binaries in Stellar Clusters
… stem from the gravitational field of an extended stellar system (e.g. galaxy or globular cluster) in which the binary resides. Due to the weakness of the external perturbation, the resulting orbital evolution is usually secular in nature, i.e. it occurs on timescales much longer than any …
-
Understanding the Star -Forming Environment in Stellar Clusters
… conditions of the star-forming environment in stellar clusters, especially for the formation of low-mass cluster members. Embedded, young, and intermediate-mass stellar clusters around Herbig Ae/Be stars are sampled. Mid- and near-infrared observations identifying young stars and millimeter …
-
Constraining the Origin of Multiple Stellar Populations in Stellar Clusters
Globular clusters were among the first luminous objects to form in the Universe. They are dense collections of hundreds of thousands of stars. Globular cluster formation is a major unsolved problem in astrophysics. A new constraint on the problem came from the discovery of unexpected star-to-star …
-
The nature and evolution of I. extragalactic radio sources, and II. young stellar clusters
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.
-
The formation of high-mass stars and stellar clusters in the extreme environment of the Central Molecular Zone
… conditions? How do massive and dense stellar clusters form, and how does this crowded environment influence the stars that form within it? How do the most massive stars form and is there an upper limit to the stellar initial mass function (IMF)? Answering questions such as these is …
-
A panchromatic study of stellar populations in Galactic Globular Clusters
… Straggler Stars (BSS) radial distribution is in stellar clusters and (ii) which are the physical processes that can produce this bimodality. We discuss possible relations between the properties of the BSS radial distribution and the dynamical state of the hosting clusters by making use of …
-
The nucleus of Centaurus A
… images in JHK reveal marginally resolved stellar clusters, comparable in their properties to young starburst clusters found close to the Galactic Centre.
-
An X-ray census of the youngest galactic star clusters
Stellar clusters are vitally important laboratories for astrophysical research. These clusters, some of which have populations numbering in the hundreds of thousands, comprise a coeval stellar population of similar chemical composition at the same distance, the analysis of which can confront …
-
Properties of turbulent star-forming clusters : models versus observations
… and gravity. In this work, the properties of stellar clusters created by numerical simulations of gravoturbulent fragmentation are compared to those from observations. This includes the analysis of properties of individual protostars as well as statistical properties of the entire cluster. It …
-
Present and early star formation : a study on rotational and thermal properties
… thesis we show how the angular momentum of prestellar and protostellar cores evolves and compare our results with observed quantities. The specific angular momentum of prestellar cores in our models agree remarkably well with observations of cloud cores. Some prestellar cores go into collapse …
-
The Evolution of and Starburst-AGN Connection in Luminous and Ultraluminous Infrared Galaxies and their Link to Globular Cluster Formation
… outputs for the SFR, AGN contribution, D4000, stellar mass (Mstar), young stellar population age (i.e. the age of the most recent starburst activity), starburst mass fraction, luminosity absorbed by dust, and stellar mass-weighted age. Comparing the properties of the IR power sources in U/LIRGs …
-
The influence of stellar birth environment on protoplanetary disc dispersal
… that they are in fact influenced by their stellar neighbours. In this dissertation I focus primarily on two mechanisms by which discs evolving in close proximity to other stars might be truncated and dispersed by their neighbours. These are tidal truncation by star-disc encounters and …