Results 161 to 170 of about 3,131 (230)

The Nature of the Field Blue-Straggler Stars

open access: yesThe Astrophysical Journal, 1971
Howard E. Bond, Darrell J. MacConnell
openaire   +1 more source

Gender inequality in urban British Africa: Evidence from Anglican marriage registers

open access: yesThe Economic History Review, EarlyView.
Abstract We examine the colonial origins and evolution of gender inequality in mission schooling and formal labour force participation across six cities in British colonial Africa, using marriage register data for some 30,000 Anglican brides and grooms well‐positioned to benefit from colonial educational and employment opportunities.
Felix Meier zu Selhausen, Jacob Weisdorf
wiley   +1 more source

Discovery of a Second Eclipsing, ​​​​​Bursting Neutron Star Low-mass X-Ray Binary in the Globular Cluster Terzan 6

open access: yesThe Astrophysical Journal
We 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

The periodical cicada four-year acceleration hypothesis revisited and the polyphyletic nature of Brood V, including an updated crowd-source enhanced map (Hemiptera: Cicadidae: Magicicada). [PDF]

open access: yesPeerJ, 2018
Cooley JR   +18 more
europepmc   +1 more source

Worldwide Invasions of Centrarchidae: The Dark Side of the Sunfish Family

open access: yesFish and Fisheries, EarlyView.
ABSTRACT Freshwater fish invasions are major drivers of global ecological change, disrupting native biodiversity and ecosystem functions. However, many invasive fish hold significant socioeconomic value, resulting in conflict over their management. Centrarchidae, which are globally distributed and are important for sportfishing and aquaculture, are now
Neil Angelo Abreo   +19 more
wiley   +1 more source

Dynamical Evolution of Four Old Galactic Open Clusters Traced by Their Constituent Stars with Gaia DR3

open access: yesThe Astronomical Journal
We 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

Relativistic Binaries in Globular Clusters. [PDF]

open access: yesLiving Rev Relativ, 2013
Benacquista MJ, Downing JMB.
europepmc   +1 more source

The Forgotten Pink Salmon in the Laurentian Great Lakes: An Unexpected Invasion With Insights for Three Oceans

open access: yesFish and Fisheries, EarlyView.
ABSTRACT Introductions of species outside their native range, such as pink salmon (Oncorhynchus gorbuscha) in the Laurentian Great Lakes, can serve as unplanned experiments that provide new insights into ecological adaptation. We synthesize available information on the understudied Great Lakes pink salmon invasion and highlight how this case can inform
Joseph A. Langan   +8 more
wiley   +1 more source

Dynamical Signatures of Trumpler 19: A Statistical and Photometric Perspective

open access: yesThe Astrophysical Journal
We 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

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