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Academic Articles & Research Papers
Showing 20 of 788 academic articles
Giovanna Marussi, Matteo Crosera, Stefano Fornasaro, Elena Pavoni et al. • Heritage
(2026)
This study investigates 49 gold solidi issued between the 4th and 5th century AD to determine their chemical composition. The coins were first catalogued by recording mass, diameter, and thickness. All specimens underwent non-destructive µ-...
DOAJ
Open Access (DOAJ)
DOI: 10.3390/heritage9010038
Richard P. Evershed • Archaeometry
(2008)
Organic residue analysis utilizes analytical organic chemical techniques to identify the nature and origins of organic remains that cannot be characterized using traditional techniques of archaeological investigation (because they are eithe...
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DOI: https://doi.org/10.1111/j.1475-4754.2008.00446.x
• Choice Reviews Online
(2004)
Bintliff, John, ed., A Companion to Archaeology. Oxford: Blackwell Publishing, 2004. word archaeology conjures up images of people in pith helmets digging into the sandy earth of the desert or monumental buildings rising above jungle foliag...
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DOI: https://doi.org/10.5860/choice.42-1649
Kris Davidson • Galaxies
(2020)
Very massive stars occasionally expel material in colossal eruptions, driven by continuum radiation pressure rather than blast waves. Some of them rival supernovae in total radiative output, and the mass loss is crucial for subsequent evolu...
DOAJ
Open Access (DOAJ)
DOI: 10.3390/galaxies8010010
C. J. Harris, Kayhan Gültekin, Laura Blecha • The Astrophysical Journal
(2026)
We present a multimessenger investigation of supermassive black hole binary (SBHB) hardening by jointly comparing models to the observed stellar mass deficits of nearby core galaxies and to nanohertz gravitational-wave background measuremen...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae9767
A.M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et al. • Physics Letters B
(2020)
The fiducial cross section for Y(1S) pair production in proton-proton collisions at a center-of-mass energy of 13 TeV in the region where both Y(1S) mesons have an absolute rapidity below 2.0 is measured to be 79±11(stat)±6(syst)±3(B)pb ass...
DOAJ
Open Access (DOAJ)
DOI: 10.1016/j.physletb.2020.135578
Jeremiah D. Paul, Richard M. Plotkin • The Astrophysical Journal
(2026)
The origin of core radio emission in radio-quiet active galactic nuclei (AGNs) is still actively debated. General-relativistic magnetohydrodynamics simulations often predict the launching of moderately large-scale jets from super-Eddington ...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae36a6
Aldo G. Sepulveda, Daniel Huber, Timothy R. Bedding, Daniel R. Hey et al. • The Astronomical Journal
(2024)
HIP 65426 hosts a young giant planet that has become the first exoplanet directly imaged with JWST. Using time-series photometry from the Transiting Exoplanet Survey Satellite (TESS), we classify HIP 65426 as a high-frequency δ Scuti pulsat...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-3881/ad4964
Bodie Breza, Matthew C. Nixon, Eliza M.-R. Kempton • The Astrophysical Journal Letters
(2025)
The evolution and structure of sub-Neptunes may be strongly influenced by interactions between the outer gaseous envelope of the planet and a surface magma ocean. However, given the wide variety of permissible interior structures of these p...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/2041-8213/ae0c07
Sumi Kim, Ena Choi, Amanda C. N. Quirk, Rachel S. Somerville et al. • The Astrophysical Journal
(2025)
We investigate the influence of supernova (SN) feedback on the satellites of elliptical host galaxies using hydrodynamic simulations. Utilizing a modified version of the GADGET-3 code, we perform cosmological zoom-in simulations of 11 ellip...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/adec96
Niu Su, Er-Liang Cui, Yi-Wei Jiang, Hua-Xing Chen • European Physical Journal C: Particles and Fields
(2026)
Abstract Confirming the existence of hybrid states remains challenging due to their experimental indistinguishability from tightly bound tetraquarks and loosely bound molecules. To address this issue, we employ QCD sum rules to systematical...
DOAJ
Open Access (DOAJ)
DOI: 10.1140/epjc/s10052-026-15939-y
Tatiana M. Rodríguez, Emmanuel Momjian, Peter Hofner, Anuj P. Sarma et al. • The Astrophysical Journal
(2024)
We present Very Large Array 1.3 cm continuum and 22.2 GHz H _2 O maser observations of the high-mass protostellar object IRAS 19035+0641 A. Our observations unveil an elongated bipolar 1.3 cm continuum structure at scales ≲500 au, which, to...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ad182f
Harmanec P., Yang S., Šlechta M., Grundstrom E. D. et al. • Astronomy & Astrophysics
(2026)
Analysis of radial velocities of two narrow absorption components in the Mg II 4481 Å line demonstrated that the secondary of the Be star o Cas is indeed a close binary system composed of two B7 stars orbiting each other with a period of
...
DOAJ
Open Access (DOAJ)
DOI: 10.1051/0004-6361/202659678
Chinmay S. Kulkarni, Thomas Behling, Elisabeth E. Banks, Jason Jones et al. • The Astrophysical Journal
(2026)
Infrared observations can probe photometric variability across the full evolutionary range of young stellar objects (YSOs), from deeply embedded protostars to pre-main-sequence stars with dusty disks. We present 3–8 μ m light curves extendi...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae3156
Cano-González M., Schödel R., Alberdi A., Najarro F. et al. • Astronomy & Astrophysics
(2026)
Context. The Arches cluster, located in the Galactic Centre (GC) is one of the best astrophysical laboratories to study the properties of massive stars and young massive clusters (YMCs). However, despite having been observed for decades at ...
DOAJ
Open Access (DOAJ)
DOI: 10.1051/0004-6361/202660846
Chin-Chun Wu, Kan Liou, Brian E. Wood, Lynn Hutting • The Astrophysical Journal
(2024)
The propagation of interplanetary shocks, particularly those driven by coronal mass ejections (CMEs), is still an outstanding question in heliophysics and space weather forecasting. Here, we address the effects of the ambient solar wind on ...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ad88ee
Hubrig S., Järvinen S. P., Schöller M., Ilyin I. • Astronomy & Astrophysics
(2026)
Context. Recent observational studies suggest that Be stars most likely are formed through the process of mass transfer in binary systems. In view of the wide consensus that the origin of the magnetic field in stars with radiative envelopes...
DOAJ
Open Access (DOAJ)
DOI: 10.1051/0004-6361/202660036
Alice Knutas, Angela Adamo, Alex Pedrini, Sean T. Linden et al. • The Astrophysical Journal
(2025)
We present JWST NIRCam observations of the emerging young star clusters (eYSCs) detected in the nearby spiral galaxy M83. The NIRcam mosaic encompasses the nuclear starburst, the bar, and the inner spiral arms. The eYSCs, detected in Pa α a...
DOAJ
Open Access (DOAJ)
DOI: 10.3847/1538-4357/ae018c
Adolf N. Witt, Geoffrey C. Clayton, B. T. Draine (2004)
Abstract. Currently ∼36 different absorption bands have been detected in the infrared spectra of cold, dense interstellar and circumstellar environments. These are attributed to the vibrational transitions of ∼17 different molecules frozen ...
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Thomas W Hartquist, David A. Williams (1998)
Abstract This book provides a comprehensive survey of modern molecular astrophysics. It includes an introduction to molecular spectroscopy and then addresses the main areas of current molecular astrophysics, including galaxy formation, star...
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DOI: https://doi.org/10.1093/oso/9780198501589.001.0001