Results 81 to 90 of about 2,624,667 (213)
Helioseismology and Asteroseismology: Looking for Gravitational Waves in acoustic oscillations
, 2014 Current helioseismology observations allow the determination of the frequencies and surface velocity amplitudes of solar acoustic modes with exceptionally high precision. In some cases, the frequency accuracy is better than one part in a million. We show
Lopes, Ilídio, Silk, Joseph
core +1 more source
Pulsating Stellar Atmospheres [PDF]
arXiv, 1997 We review the basic concepts, the present state of theoretical models, and the future prospects for theory and observations of pulsating stellar atmospheres. Our emphasis is on radially pulsating cool stars, which dynamic atmospheres provide a general example for the differences with standard static model atmospheres.
arxiv
X-ray astronomy of stellar coronae (Review) [PDF]
, 2004 X-ray emission from stars in the cool half of the Hertzsprung-Russell diagram is generally attributed to the presence of a magnetic corona that contains plasma at temperatures exceeding 1 million K. Coronae are ubiquitous among these stars, yet many fundamental mechanisms operating in their magnetic fields still elude an interpretation through a ...
arxiv +1 more source
Multi‐isotope (N, O, Ti, and Cr) study of C1 and CM‐like clasts—Probing unsampled C1 material
Meteoritics &Planetary Science, EarlyView.Abstract A multi‐element isotope (N, O, Ti, and Cr) study was conducted on C1 and CM‐like clasts hosted in achondrites and chondrite breccias to understand the genesis of these chondritic clasts. The mineralogy, O, and N isotopes confirm that CM‐like clasts in howardites and polymict eucrites closely resemble CM chondrite‐like material.
Markus Patzek +9 more
wiley +1 more source
, 2016 Determining elemental abundances of bulge stars can, via chemical evolution modeling, help to understand the formation and evolution of the bulge. Recently there have been claims both for and against the bulge having a different [$\alpha$/Fe] vs.
Jönsson, H. +3 more
core +1 more source
Fundamental stellar parameters [PDF]
arXiv, 2004 I present a discussion of fundamental stellar parameters and their observational determination in the context of interferometric measurements with current and future optical/infrared interferometric facilities. Stellar parameters and the importance of their determination for stellar physics are discussed.
arxiv
Meteoritics &Planetary Science, EarlyView.Abstract Combining electron backscatter diffraction (EBSD) with X‐ray computed tomography (XCT) offers a comprehensive approach to investigate shock deformation and rock texture in meteorites, yet such integration remains uncommon. In this study, we demonstrate the synergistic potential of XCT and EBSD in revealing deformation metrics, thereby ...
Alice Macente +9 more
wiley +1 more source
Non-LTE aluminium abundances in late-type stars
, 2017 Aluminium plays a key role in studies of the chemical enrichment of the Galaxy and of globular clusters. However, strong deviations from LTE (non-LTE) are known to significantly affect the inferred abundances in giant and metal-poor stars.
Lind, Karin, Nordlander, Thomas
core +1 more source
Ultraviolet C (UV‐C) Light Therapy for Equine Ulcerative Keratomycosis—An In Vitro Study
Veterinary Ophthalmology, EarlyView.ABSTRACT Objectives To assess if an affordable, commercially available 275 nm ultraviolet C (UV‐C) device can inhibit fungal pathogens associated with equine keratomycosis and to establish the optimal exposure time/dose required in vitro. Methods Fungal inhibition zone surface areas of isolates from two fungal genera (Aspergillus and Fusarium spp ...
Mona Hoerdemann +3 more
wiley +1 more source
An Asymmetric Galactic Stellar Disk Traced by OB-type Stars from LAMOST DR7
Research in Astronomy and AstrophysicsUsing 9943 OB-type stars from LAMOST DR7 in the solar neighborhood, we fit the vertical stellar density profile with the model including a single exponential distribution at different positions (R, Φ).
Xiaopeng Liu +6 more
semanticscholar +1 more source