Results 71 to 80 of about 170,841 (292)

Stochasticity in Star Clusters: Reduced Random Sampling Method

open access: yesOpen Astronomy, 2014
This paper aims to contribute to the debate taking place nowadays on the two extreme schemes of sampling the stellar masses within star clusters, known as Optimal Sampling and Random Sampling.
de Meulenaer P.   +3 more
doaj   +1 more source

How can young massive clusters reach their present-day sizes?

open access: yes, 2015
The classic question that how young massive star clusters attain their shapes and sizes, as we find them today, remains to be a challenge. Both observational and computational studies of star-forming massive molecular gas clouds infer that massive ...
Banerjee, Sambaran, Kroupa, Pavel
core   +1 more source

Using H-alpha Morphology and Surface Brightness Fluctuations to Age-Date Star Clusters in M83 [PDF]

open access: yes, 2011
We use new WFC3 observations of the nearby grand design spiral galaxy M83 to develop two independent methods for estimating the ages of young star clusters.
Abhijit Saha   +42 more
core   +2 more sources

This Is Not a Myeloproliferative Neoplasm…

open access: yes
Pediatric Blood &Cancer, EarlyView.
Stephanie Juané Kennedy
wiley   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

YOUNG STAR CLUSTERS IN THE CIRCUMNUCLEAR REGION OF NGC 2110 [PDF]

open access: yesThe Astrophysical Journal, 2014
High-resolution observations in the near infrared show star clusters around the active galactic nucleus (AGN) of the Seyfert 1 NGC 2110, along with a 90 × 35 pc bar of shocked gas material around its nucleus. These are seen for the first time in our imaging and gas kinematics of the central 100 pc with the Keck OSIRIS instrument with adaptive optics ...
Durre, Mark, Mould, Jeremy
openaire   +3 more sources

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

open access: yesFEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young   +7 more
wiley   +1 more source

The Star Clusters as Links between Galaxy Evolution and Star Formation Project. I. Numerical Method

open access: yesThe Astrophysical Journal
Stellar clusters are critical constituents within galaxies: They are the result of highest-density star formation, and through their spatially and temporally correlated feedback, they regulate their host galaxy evolution.
Marta Reina-Campos   +3 more
doaj   +1 more source

Testing the Disk Regulation Paradigm with Spitzer Observations. II. A Clear Signature of Star-Disk Interaction in NGC 2264 and the Orion Nebula Cluster

open access: yes, 2007
Observations of PMS star rotation periods reveal slow rotators in young clusters of various ages, indicating that angular momentum is somehow removed from these rotating masses. The mechanism by which spin-up is regulated as young stars contract has been
Cieza L. A.   +4 more
core   +2 more sources

Star Cluster Evolution: From Young Massive Star Clusters to Old Globulars [PDF]

open access: yes, 2009
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 of the compact YMCs seen in abundance in extragalactic starbursts, are potentially the progenitors of globular ...
openaire   +2 more sources

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