Results 51 to 60 of about 7,215 (204)
Noûs, EarlyView.ABSTRACT It is a truism of mathematics that differences between isomorphic number systems are irrelevant to arithmetic. This truism is deeply rooted in the modern axiomatic method and underlies most strands of arithmetical structuralism, the view that arithmetic is about some abstract number structure.
Balthasar Grabmayr
wiley +1 more source
Rotational Evolution of Classical T Tauri Stars: Models and Observations
The Astrophysical JournalWe developed a grid of stellar rotation models for low-mass and solar-type classical T Tauri stars (CTTS; 0.3 M _⊙ < M _* < 1.2 M _⊙ ). These models incorporate the star–disk interaction and magnetospheric ejections to investigate the evolution of the ...
Javier Serna +19 more
doaj +1 more source
Lyα Scattering Models Trace Accretion and Outflow Kinematics in T Tauri Systems
The Astrophysical Journal, 2023 T Tauri stars produce broad Ly α emission lines that contribute ∼88% of the total UV flux incident on the inner circumstellar disks. Ly α photons are generated at the accretion shocks and in the protostellar chromospheres and must travel through ...
Nicole Arulanantham +20 more
doaj +1 more source
Rotation in NGC 2264: a study based on CoRoT photometric observations [PDF]
, 2013 Rotation is one of the key stellar parameters which undergo substantial evolution during the stellar lifetime, in particular during the early stages.
Affer, Laura +4 more
core +1 more source
FEBS Letters, Volume 600, Issue 2, Page 164-187, January 2026.Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii +8 more
wiley +1 more source
Evidence for Dust Depletion in a Misaligned Protoplanetary Disk with JWST
The Astrophysical Journal LettersHere we report the detection of dust depletion in a misaligned inner disk around UX Tau A using JWST MIRI spectra. Mid-infrared (MIR) continuum “seesaw” variability was detected in this disk by Spitzer and attributed to variable shadows cast on the outer
C. C. Espaillat +14 more
doaj +1 more source
The multiplicity of T Tauri stars in the star forming regions Taurus-Auriga and Ophiuchus-Scorpius: A 2.2 micron speckle imaging survey [PDF]
, 1993 We present the results of a magnitude limited (K < =8.5 mag) speckle imaging survey of 69 T Tauri stars in the star forming regions Taurus-Auriga and Ophiuchus-Scorpius. Thirty-three companion stars were found with separations ranging from 0."07 to 2."5;
Ghez, A. M. +2 more
core
Accretion Disks Around Young Objects. II. Tests of Well-Mixed Models with Ism Dust [PDF]
, 1999 We construct detailed vertical structure models of irradiated accretion disks around T Tauri stars with interstellar medium dust uniformly mixed with gas. The dependence of the structure and emission properties on mass accretion rate, viscosity parameter,
Calvet N. +13 more
core +2 more sources
Ferroelectric HZO Thin Films for FEFETs: Crystal Structure‐Device Performance Relationship
Advanced Electronic Materials, Volume 12, Issue 1, 7 January 2026.Crystal Structure of HZO Thin Films Methods of Thin Film Deposition 1T‐FeFET Design Influence on Ferroelectric Properties FeFET Applications Recent Advances and Challenges ORTHORHOMBIC HEARTBEAT. Abstract The rapid development of hafnium zirconium oxide (HZO) thin films has established ferroelectric field‐effect transistors (FeFETs) as strong ...
Harsha Ragini Aturi +2 more
wiley +1 more source
ABYSS. III. Observing Accretion Activity in Young Stars Through Empirical Veiling Measurements
The Astronomical JournalStellar accretion plays an important role in the early stages of stellar evolution, particularly in Classical T Tauri Stars (CTTSs). Accretion of a CTTS can be related to different physical parameters such as effective temperature ( T _eff ), age ...
Serat Saad +7 more
doaj +1 more source