Results 181 to 190 of about 13,091 (256)
The Astrophysical JournalWe have analyzed Chandra and Suzaku observations of the globular cluster Terzan 6, made when the recurrent transient GRS 1747–312 was in quiescence. Our analysis reveals the presence of a second eclipsing, bursting neutron star low-mass X-ray binary in ...
Maureen van den Berg +6 more
doaj +1 more source
Journal of the Royal Anthropological Institute, EarlyView.Recent years have seen landmark progress in our understanding of early Homo sapiens occupation of Europe, owing to new excavations and the application of new analytical methods. Research on British sites, however, continues to lag. This is because of limitations inherent in existing cave collections, and limited options for new fieldwork at known sites.
Robert Dinnis
wiley +1 more source
Cluster Distances using δ Sct Stars; Oscillating Blue Stragglers in ω Cen [PDF]
, 2002 L. M. Freyhammer, Jorgen Petersen
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The Astronomical JournalWe investigate the evolutionary stages of four open clusters—Berkeley 39, Collinder 261, NGC 6819, and NGC 7789—of ages ranging from 1.6 to 6 Gyr. These clusters have previously been classified into dynamically young and intermediate age groups based on ...
Shanmugha Balan +4 more
doaj +1 more source
The Blue Straggler Star Populations in Galactic Globular Clusters
, 2017 The puzzling existence of Blue Straggler Stars (BSSs) implies that they must form in relatively recent events, after the majority of the constituent globular cluster (GC) stellar population was formed. In this thesis we compile a large set of independent work to help understand the formation of BSSs.
openaire +2 more sources
The British Journal of Sociology, EarlyView.ABSTRACT Class identity is a crucial sociological concept, but is only ever measured at the individual level. In this paper, we ask: do groups have class identities? And do those class identities correspond with material resources? To answer these questions, we examine data from 31 of the most prominent American religious denominations in the early ...
Tessa Huttenlocher, Melissa Wilde
wiley +1 more source
Dynamical Signatures of Trumpler 19: A Statistical and Photometric Perspective
The Astrophysical JournalWe present a statistical approach to investigating the dynamical evolution of the old open cluster Trumpler 19. We identified 810 cluster members using an ensemble-based unsupervised machine learning method applied to Gaia Data Release 3 astrometric data.
A. H. Sheikh, Biman J. Medhi, Ram Sagar
doaj +1 more source
Annals of Applied Biology, EarlyView.We investigated the role of vision in host‐seeking behaviour by Philaenus spumarius, the main European vector of Xylella fastidiosa, through an integrated anatomical, optical, physiological, and behavioural study. Our data highlight that the spittlebug uses visual cues, including polarized light, which may aid in detecting the polarized reflections ...
Domen Lazar +4 more
wiley +1 more source
Blue Stragglers, Young White Dwarfs, and UV‐Excess Stars in the Core of 47 Tucanae [PDF]
, 2001 F. R. Ferraro +4 more
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Do offspring characteristics reflect parental migration variation?
Journal of Fish Biology, EarlyView.Abstract Sea trout, Salmo trutta, display a wide range of migratory behaviours, and one aspect of variation comes from freshwater migration distance. The overall aim of this study was to determine if offspring of long‐ and short‐distance migrants exhibited phenotypic differences relating to parental migration distance.
Madeleine Berry +9 more
wiley +1 more source