Massive Stars and Stellar Clusters
Hoffmann, Tadziu (2004): Synthetic spectra of massive stars as tool for the spectral analysis of stars and stellar clusters. Dissertation, LMU München: Fakultät für Physik
... or stellar clusters, but accurate knowledge of the winds of massive hot stars as function of their stellar parameters is also a required input for real- istic models for the evolution ...
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A clustered origin for isolated massive stars
... High-mass stars are commonly found in stellar clusters promoting the idea that their formation occurs due to the physical processes linked with a young stellar ...high-mass stars are ...
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Structure and mass segregation in Galactic stellar clusters
... star clusters, the brightest, most massive stars are concen- trated towards the centre of the cluster, which is usually attributed to mass segregation ...case, massive stars formed ...
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Formation of stars and stellar clusters in galactic environment
... Chapter 6. Formation of stellar clusters the propagation of the spiral shock and the compression of the cluster forming region. As the shock approaches from the bottom side of the diagram, it compresses the ...
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A high fraction of Be stars in young massive clusters: evidence for a large population of near-critically rotating stars
... both clusters we are sensitive to Hα down to ∼ 2 M ⊙ ...of stellar rotation (with the low mass representing slow rotators and the higher end of the range representing ω = ...
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The formation of high-mass stars and stellar clusters in the extreme environment of the Central Molecular Zone
... proto- clusters (blue and red dash/dot, respectively) and the Arches cluster (black, dash/dot), where all profiles have been normalised to unity at a radius of ∼ ...the stellar components in both the Arches ...
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Feedback from winds and supernovae in massive stellar clusters - II. X-ray emission
... 3.5 Further Evolutionary Stages After the 35 M ⊙ star has exploded the remaining two stars continue in their MS phases for a further 0.1 Myrs, at which point the 32 M ⊙ star begins to follow the same evolution- ...
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Massive open star clusters using the VVV survey : II. Discovery of six clusters with Wolf-Rayet stars
... cluster stars and the standard star used for the correction of the atmospheric ...all stars included in observations at a given slit position at a given time are very ...the stars were observed twice ...
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The spatial evolution of young massive clusters - I. A new tool to quantitatively trace stellar clustering
... OB stars with a nearest neighbour number of N = 5 using an extended control distribution (CDB) and define a significance threshold – that is the value of I 5 above which a star is significantly clustered above ...
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Age-Dating of Young Stars and Stellar Systems
... Young stellar systems are embedded in left-over material from the star- formation ...event. Stars interact with their surroundings via their ionizing and non-ionizing radiation, triggering or inhibiting ...
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The possible role of stellar mergers for the formation of multiple stellar populations in globular clusters
... since massive stars can be ejected from the cluster center ...and stellar dynamical ejection, the results shown here and this discussion suggest that these processes may be relevant for the MSP ...
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Young Massive Clusters in the Galactic Center
... young clusters in the Galactic Center represent the closest examples of massive starbursts and they define the upper mass limit of the Galactic cluster mass ...Central clusters. They each are more ...
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Stellar populations and ages of M82 super star clusters
... star clusters in the starburst galaxy ...mid-B stars. The red spectra (5730±8790 AÊ) of clusters F and L show the Ca ii triplet and numerous F- and G-type absorption ...two clusters differ ...
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New Candidate Massive Clusters from 2MASS
... We estimate the mean star density in the central area for each colour-magnitude box and subtract the mean star density in the surrounding control field. If there is an overdensity the pixel value in the final map will be ...
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New Candidate Massive Clusters from 2MASS
... We estimate the mean star density in the central area for each colour-magnitude box and subtract the mean star density in the surrounding control field. If there is an overdensity the pixel value in the final map will be ...
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Stellar winds near massive black holes - the case of the S-stars
... a massive black hole in the centre with a smooth particle hydrodynamics (SPH) code in order to simulate the behaviour of stellar wind from massive stars near a massive black ...with ...
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Formation of stellar clusters
... of stellar clusters in molecular clouds that form as the ISM passes through spiral ...where clusters forming every 5-10 pc along the merger ...individual clusters, calculates their physical ...
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Star Clusters and Stellar Dynamics
... • Stellar encounters lead to dynamical relaxation, wheby the system is in a thermal equilibrium. The time to reach this can be estimated as the typical star to change its energy by an amount equal to the mean ...
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Physical Properties of Stars and Stellar Dynamics
... that stellar photosphere dynamics are crucial in the determination of the power of stars as measured by their ...of stars dominated by radiation pres- sure in the photosphere, according to which, the ...
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European VLBI Network observations of 6.7 GHz methanol masers in clusters of massive young stellar objects
... 2012), on the basis of the significant velocity extent (>8 km s −1 ) of the 6.7 GHz emission with multiple features of flux density greater than 2 Jy. We assumed that these characteristics are typical for sources with ...
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