Results 261 to 270 of about 7,481 (302)

Terrestrial atmospheric ion implantation occurred in the nearside lunar regolith during the history of Earth's dynamo. [PDF]

Commun Earth Environ
Paramanick S, Blackman EG, Tarduno JA, Carroll-Nellenback J.   +3 more
europepmc   +1 more source

"You're Not a Cop, Right?" How Tobacco Retailers Navigate Underage Tobacco Purchases at the Point of Sale: A Qualitative Analysis of Underage Buyers' Comments from Three U.S. states. [PDF]

Subst Use Misuse
Reed EC, Ackerman C, Lee JGL, Kong AY, Giovenco DP, Delnevo CD, Hrywna M.   +6 more
europepmc   +1 more source

An Abrupt Change in the Disk Fraction of Free-Floating Planets at the Deuterium-Burning Ignition Limit

Rodrigues T, Bouy H, Raymond S, Martín E, Bertin E, Romero JO, Barrado D, Huélamo N, Tamura M, Roig NM, Galli P, Cuillandre J.   +11 more
europepmc   +1 more source

A binary merger product as the direct progenitor of a Type II-P supernova

Niu* Z, Sun* N, Zapartas* E, Souropanis D, Cui Y, Maund JR, Andrews JJ, Briel MM, Fraser M, Gossage S, Kruckow MU, Liotine C, Liu Z, Srivas PM, Teng E, Wang X, Yang Y, Liu J.   +17 more
europepmc   +1 more source

Feedback mechanisms stopping the star formation in a pair of massive galaxies in the early Universe

Pérez-González P, D'Eugenio F, Pino BRD, Perna M, Uebler H, Maiolino R, Arribas S, Lamperti I, Bunker A, Carniani S, Charlot S, Willott C, Böker T, Parlanti E, Scholtz J, Venturi G, Barro G, Costantin L, Navarro IM, Dunlop J, Magee D, Cresci G.   +21 more
europepmc   +1 more source

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Seismological measurement of stellar ages

Nature, 1987
Accurate measurements of stellar acoustic oscillation frequencies, which are likely to be obtained in the coming years, will provide important new data enabling us to diagnose the internal structure of stars. The ages of main-sequence stars are likely to be determined to a higher precision than has been possible in the past and much more accurate ...
D O Gough, Gough Douglas
exaly   +2 more sources

Stellar ages and their cosmological context

EAS Publications Series, 2014
Stellar ages have traditionally been used to constrain cosmological models by setting lower limits to the age of the universe. We quickly review the basic cosmological concepts that underpin the derivation of a finite age, and the constraints given by the measure of cosmological parameters at a redshift z ∼ 1000.
D. Valls-Gabaud
openaire   +2 more sources

An Investigation of the Use of Synthetic Spectra to Find the Ages of Stellar Clusters [PDF]

Publications of the Astronomical Society of the Pacific, 2013
The utility of stellar cluster aging methods based on integrated spectra is clearly demonstrated by its extensive use by researchers for decades.
Randa Asa'D
exaly   +2 more sources