Results 131 to 140 of about 692 (185)

Tracing ancient solar cycles with tree rings and radiocarbon in the first millennium BCE. [PDF]

Nat Commun
Brehm N, Pearson CL, Christl M, Bayliss A, Nicolussi K, Pichler T, Brown D, Wacker L.   +7 more
europepmc   +1 more source

Galactic archaeology with metal-poor stars [Elektronisk resurs]

, 2017
The chemical fingerprints of old, metal-poor stars can be used to unravel the events of the newborn Universe and help us understand the properties of the first stars and star clusters.
Heiter, Ulrike,, Lind, Karin,, Lambert, David L.,, Nordlander, Thomas,, Korn, Andreas J.,   +4 more
core  

A non-axisymmetric potential for the Milky Way disk

International audienceWe provide a purely dynamical global map of the non-axisymmetric structure of the Milky Way disk. For this, we exploited the information contained within the in-plane motions of disk stars from Gaia DR3 to adjust a model of the ...
G. F. Thomas, Monari, G., Thomas, G., F., A. Siebert, B. Famaey, G. Monari, Rozier, S., S. Rozier, Li, C., Thomas, G. F., Ibata, R., C. Li, Khalil, Y. R., Ramos, P., T. Antoja, P. Ramos, Bernet, M., Y. R. Khalil, Khalil, Y., R., M. Romero-Gómez, Famaey, B., Siebert, A., M. Bernet, Antoja, T., R. Ibata, Romero-Gómez, M.   +25 more
core   +1 more source

Age and origin of a Cahokian wooden monument at the Mitchell site, Illinois, USA. [PDF]

PLoS One
Kessler NV, Benson EM, Pauketat TR, Kirk JD, Therrell MD.   +4 more
europepmc   +1 more source

Signatures of an Intermediate-Age Metal-Rich Bulge Population

, 2012
We have determined detailed elemental abundances and stellar ages for a sample of now 38 microlensed dwarf and subgiant stars in the Galactic bulge. Stars with sub-solar metallicities are all old and have enhanced alpha-element abundances - very similar ...
Asplund, M., Gould, A., Gal-Yam, A., Johnson, J. A., Adén, Daniel, Feltzing, Sofia,, Thompson, I., Lucatello, S., Melendez, J., Cohen, J. G., Bensby, Thomas,   +10 more
core  

Extreme properties of a compact and massive accreting black hole host in the first 500 Myr. [PDF]

Nat Commun
Tripodi R, Martis N, Markov V, Bradač M, Di Mascia F, Cammelli V, D'Eugenio F, Willott C, Curti M, Bhatt M, Gallerani S, Rihtaršič G, Singh J, Gaspar G, Harshan A, Judež J, Merida RM, Desprez G, Sawicki M, Goovaerts I, Muzzin A, Noirot G, Sarrouh GTE, Abraham R, Asada Y, Brammer G, Estrada-Carpenter V, Felicioni G, Fujimoto S, Iyer K, Mowla L, Strait V.   +31 more
europepmc   +1 more source

Pre-Columbian earth-builders settled along the entire southern rim of the Amazon. [PDF]

Nat Commun, 2018
de Souza JG, Schaan DP, Robinson M, Barbosa AD, Aragão LEOC, Marimon BH, Marimon BS, da Silva IB, Khan SS, Nakahara FR, Iriarte J.   +10 more
europepmc   +1 more source

The Ring Monstrance from the Loreto treasury in Prague: handheld Raman spectrometer for identification of gemstones. [PDF]

Philos Trans A Math Phys Eng Sci, 2016
Jehlička J, Culka A, Baštová M, Bašta P, Kuntoš J.   +4 more
europepmc   +1 more source

Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial. [PDF]

Nat Commun, 2017
Turney CSM, Jones RT, Phipps SJ, Thomas Z, Hogg A, Kershaw AP, Fogwill CJ, Palmer J, Bronk Ramsey C, Bronk Ramsey C, Adolphi F, Muscheler R, Hughen KA, Staff RA, Grosvenor M, Golledge NR, Rasmussen SO, Hutchinson DK, Haberle S, Lorrey A, Boswijk G, Cooper A.   +21 more
europepmc   +1 more source

Lithium evolution in the low-mass evolved stars with asteroseismology and LAMOST spectroscopy. [PDF]

Fundam Res
Yan HL, Zhang JH, Zhou YT, Gao Q, Shi JR, Kumar YB, Aoki W, Li H, Li C, Zhao G.   +9 more
europepmc   +1 more source