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 9 of 9 for “"Stellar content"”.
-
Exploring the Environment of Young Stars: Disks, Companions and Clusters
… topics of star formation: Disk evolution, stellar multiplicity, FU Ori phenomenon and the formation of massive stars. The main results are the following: 1. By applying the novel method of polarimetric differential imaging and the NACO/VLT instrument we probe one of the closest …
-
Early Stages of Massive Star Formation at High Spatial Resolution
… of deeply embedded companions of a Young Stellar Object (S106) and to identify multiplicity in the main illuminating sources (also candidates to be the ionising sources) inside G77.96-0.01. This last result could also explain the relationship between some UCHIIs and their detected extended …
-
Understanding the Earliest Stages of High-mass Star Formation
… of the W3 GMC comprises an analysis of the young stellar objects (YSO), the regions currently hosting on-going high-mass star formation, the environment, history, and compact source population. Spitzer data were used to identify, classify, and investigate the clustering properties of the YSO …
-
High-Resolution Imaging of Dense Gas Structure and Kinematics in Nearby Molecular Clouds with the CARMA Large Area Star Formation Survey
… of the hierarchical structure and young stellar content of all five regions. The more evolved regions with the most young stellar objects (YSOs) and strongest emission have formed the most hierarchical levels. However, all regions show similar mean branching properties at each level, …
-
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 …
-
How to Accurately Map the Milky Way with a Billion Sources: A Journey into the Gaia-verse
… thick disks, the halo power-law exponent, local stellar mass density and surface density of the Milky Way. My thesis demonstrates the potential of Gaia when distances are well modelled and incompleteness is accounted for. My tools will be invaluable for answering further questions about the Milky …
-
The Scatter Dependence of the Spatially-Resolved Star Formation Main Sequence Relation
… impact of various star formation rate (SFR) and stellar mass transformations on the observed SFMS. Ranging from 10^6 to 10^11.5 M⊙ and derived from colour to mass-to-light ratio methods for mid-infrared bands, the stellar masses are internally consistent within their range of applicability, given …
-
Star-forming Galaxies and Quenched Systems throughout Cosmic Time
… I use the BEAGLE SED-fitting code to derive stellar masses, SFRs and redshifts from galaxies within the ASTRODEEP catalogue. I fit a fully Bayesian hierarchical model of the main sequence over redshifts 1.25 < z < 6 while explicitly modelling the outlier distribution. My results agree with an …