Stars: massive
The influence of multiple stars on the high mass stellar initial mass function and age dating of young massive star clusters
... original stars. First, all the ‘pseudo’ masses for all recovered stars are added up and then divided by the sum of the real masses of all stars in the ...the stars with pseudo ages recovered ...
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Massive open star clusters using the VVV survey II Discovery of six clusters with Wolf Rayet stars
... observable massive stars with initial masses equal to or greater than 60 M decreases with time, and clusters with an age of 5 Myr can already have a mass function showing an abrupt drop at high ...sequence ...
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The multiplicity of massive stars in the Orion Nebula Cluster as seen with long baseline interferometry
... the stars in the Orion cluster is al- ready well characterized as far as either very close spectro- scopic (≤1 AU) or relatively wide visual systems (≥50 AU) are ...most massive star in ...
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Massive stars in the SDSS IV/APOGEE SURVEY I OB stars
... hot, massive stars, from O-type dwarfs to their evolved counterparts ( blue super-giants, hyper-giants, and / or Wolf-Rayet stars ) is of utmost importance to understand star formation and further ...
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Bright globular clusters in NGC 5128: the missing link between young massive clusters and evolved massive objects
... The measured radial velocities for all the stars observed dur- ing the 2002 run with UVES are given in Col. 7 of Table 2. They were measured by cross-correlating each Fourier-filtered stellar spectrum against each ...
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Instability of magnetic equilibria in barotropic stars
... main-sequence stars (Reisenegger 2009), with the possible exception of very massive O stars, which are radiation dominated and thus only weakly ...
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On magnetic equilibria in barotropic stars
... From a theoretical point of view, the persistence of magnetic fi elds in massive stars and compact remnants motivates the interest in what physical conditions are involved in sustaining such equilibria. Both ...
12
Constraints on Helium Enhancement in the Globular Cluster M3 (Ngc 5272): The Horizontal Branch Test
... The presence of large abundance anomalies was first iden- tified in the GC ω Centauri (NGC 5139). In this cluster, not only such light elements as C, N, O, F, Na, Mg, and Al, but also the Fe-peak, s-process, and ...
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YOUNG STELLAR CLUSTERS CONTAINING MASSIVE YOUNG STELLAR OBJECTS IN THE VVV SURVEY
... brightest stars and 1200 s for the ...type stars and by Strai ž ys & Lazauskait ė ( 2009 ) for the rest of the spectral types ( tabulated in Table 3 ) ...
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Variations in the lithium abundances of turn off stars in the globular cluster 47 Tucanae
... IM-AGB stars or the winds of massive ...IM-AGB stars were the main polluters the current mass of the clusters should be dominated by stellar ...of massive stars as a more attractive ...
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Formation of multiple populations in globular clusters: another possible scenario
... the massive stellar winds within the cluster’s gravitational potential well much more feasible early ...of stars without intracluster gas – the velocity of the ejected mate- rial decreases only because of ...
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Intergalactic stellar populations in intermediate redshift clusters
... old stars, consistent with the model predictions that the majority of the ICL stars come from massive galaxies, there is a significant fraction of ICL stars that are old and metal poor, ...
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On a New Theoretical Framework for RR Lyrae Stars II Mid infrared Period Luminosity Metallicity Relations
... ignored. Stars were divided into fi ve metallicity bins, and the predicted PL relation for the median of each bin is shown as the solid line in the corresponding ...
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Obscured clusters III Follow up observations of Mercer 23
... show He ii 2.18 μm in absorption. Finally, the H i Brackett lines of 1.67 μm, and 1.74 μm, He i 1.70 μm and He ii 1.69 μm are all in absorption. While the K-band alone does not provide clas- sifications as accurate as ...
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Automatic classification of poorly sampled variable stars
... Automatic classification methods applied to sky surveys have revolutionized the as- tronomical target selection process. Most surveys generate a vast amount of time series, or “lightcurves”, that represent the brightness ...
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The nature of assembly bias II Halo spin
... In this letter we will investigate the prevalence of the as- sembly bias with the proposed redefinition of an overdensity peak height of Paper I using the dimensionless spin param- eter. Works by Bett et al. (2007, ...
5
Automatic survey invariant classification of variable stars
... two stars with their orbital plane aligned to ...the stars moves in front of the other, blocking its ...in stars can be roughly identified with one of two families depending on the nature of the ...
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Deep census of variable stars in a VLT/VIMOS field in Carina
... 372 stars in Lupus, what corresponds to ∼ 0 ...000 stars, 50 099 were found to vary in ...the stars in the sample, is much higher than in the two ...
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Deep multi survey classification of variable stars
... Variable stars are crucial for studying and understanding the galaxy and the ...able stars [Benavente et ...Variable stars such as RR Lyrae, Mira, and Cepheids are important for distant ladder ...
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Clustering based feature learning on variable stars
... Most of the automatic classification tools coming from the Machine Learning commu- nity are very effective in the sense that they can produce high accuracy results and work very fast in the classification stage (after ...
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