Results 61 to 70 of about 353,247 (201)

Improved Spectral Classification of Local K/M Dwarfs in SDSS Surveys. I. Chemodynamic Validation and Metallicity Calibration

The Astrophysical Journal
An examination of 109,276 spectra of low-mass stars in the Sloan Digital Sky Survey (SDSS) data archive, collected pre-2010, provides a broad collection of K/M (sub)dwarfs tracing the local ( d ≲ 250 pc) population of the thin-disk, thick-disk, and halo,
Emma Galligan, Sébastien Lépine
doaj   +1 more source

Magellanic System Stars Identified in SMACS J0723.3-7327 James Webb Space Telescope Early Release Observations Images

The Astrophysical Journal, 2023
We identify 71 distant stars in James Webb Space Telescope/NIRCam early release observations (ERO) images of the field of galaxy cluster SMACS J0723.3-7327 (SMACS 0723).
Jake Summers, Rogier A. Windhorst, Seth H. Cohen, Rolf A. Jansen, Timothy Carleton, Patrick S. Kamieneski, Benne W. Holwerda, Christopher J. Conselice, Nathan J. Adams, Brenda L. Frye, Jose M. Diego, Christopher N. A. Willmer, Rafael Ortiz III, Cheng Cheng, Alex Pigarelli, Aaron Robotham, Jordan C. J. D’Silva, Scott Tompkins, Simon P. Driver, Haojing Yan, Dan Coe, Norman Grogin, Anton M. Koekemoer, Madeline A. Marshall, Nor Pirzkal, Russell E. Ryan Jr.   +25 more
doaj   +1 more source

Evolutionary history and taxonomy of the genus Zea

American Journal of Botany, Volume 113, Issue 10, October 2026.
Abstract Premise Taxonomic differentiation of teosinte species (Zea spp.), the closest relatives of maize (Z. mays) is crucial for understanding their distribution, ecology, and evolutionary history. Resolving the taxonomic uncertainties is of scientific interest and has practical implications for biodiversity management, preservation, and utilization.
José de Jesús Sánchez González, Lino De La Cruz Larios, José A. Ruiz‐Corral, Benjamín Hernández, Diana M. Rivera‐Rodríguez   +4 more
wiley   +1 more source

Springhill Catholic Primary School, Southampton (SOU1569)

, 2016
Wessex Archaeology was commissioned by Springhill Catholic Primary School (NGR 441328, 112795) to undertake an archaeological evaluation on a playing field prior to it being surfaced for use as a Multi-Use Games Area (MUGA)
Wessex Archaeology
core   +1 more source

EARTH Integrated Archaeology Rapporten 163

, 2022
In opdracht van Attis Advies heeft EARTH Integrated Archaeology in oktober-november 2020 een archeologisch bureau- en booronderzoek uitgevoerd binnen een plangebied nabij begraafplaats De Vormt, gemeente Urk.
Rumping, BSc S. (EARTH Integrated Archaeology), Moor, Dr. J.J.W. de (EARTH Integrated Archaeology), Grothe, MSc K. (EARTH Integrated Archaeology), J.J.W. de Moor, K. Grothe, S. Rumping   +5 more
core   +1 more source

Galactic archaeology through the lens of asteroseismology

, 2023
Presentation given at the conference Bulge40: "The Galactic bulge and beyond: A conference in honor of Mike Rich", 18-22 September 2023, Elba Island (Italy)
openaire   +2 more sources

Scaling K2. VI. Reduced Small-planet Occurrence in High-galactic-amplitude Stars

The Astronomical Journal, 2023
In this study, we performed a homogeneous analysis of the planets around FGK dwarf stars observed by the Kepler and K2 missions, providing spectroscopic parameters for 310 K2 targets —including 239 Scaling K2 hosts—observed with Keck/HIRES.
Jon K. Zink, Kevin K. Hardegree-Ullman, Jessie L. Christiansen, Erik A. Petigura, Kiersten M. Boley, Sakhee Bhure, Malena Rice, Samuel W. Yee, Howard Isaacson, Rachel B. Fernandes, Andrew W. Howard, Sarah Blunt, Jack Lubin, Ashley Chontos, Daria Pidhorodetska, Mason G. MacDougall   +15 more
doaj   +1 more source

A Data‐Driven Review of Geoscience Research Evolution Using SciBERT‐Based Topic and Network Analysis

Geoscience Data Journal, Volume 13, Issue 4, October 2026.
This review synthesises the evolution of global geoscience research from 2004 to 2023 using large‐scale bibliometric evidence. By combining keyword co‐occurrence network analysis with SciBERT‐based topic modelling, it identifies major paradigm transitions from geology‐centred research to climate‐focused studies and recent data‐ and AI‐driven ...
Sooyeon Han, Ju‐seop Kim
wiley   +1 more source

EARTH Integrated Archaeology Rapporten 164

, 2022
In november 2020 heeft EARTH Integrated Archaeology B.V een verkennend en karterend booronderzoek (IVO-O) uitgevoerd in een plangebied in Almere Oosterwold aan de toekomstige Daniël Goedkoopstraat.
Rumping, MSc S. (EARTH Integrated Archaeology), Devriendt, Dr. I. (BAAC Vlaanderen), Moor, Dr. J.J.W. de (EARTH Integrated Archaeology), J.J.W. de Moor, I. Devriendt, S. Rumping   +5 more
core   +1 more source

Chemical Doppelgangers in GALAH DR3: The Distinguishing Power of Neutron-capture Elements among Milky Way Disk Stars

The Astrophysical Journal
The observed chemical diversity of Milky Way stars places important constraints on Galactic chemical evolution and the mixing processes that operate within the interstellar medium. Recent works have found that the chemical diversity of disk stars is low.
Catherine Manea, Keith Hawkins, Melissa K. Ness, Sven Buder, Sarah L. Martell, Daniel B. Zucker   +5 more
doaj   +1 more source