Results 91 to 100 of about 31,062 (274)
Rotational Velocities and Radii Estimates of Low-mass Pre-main-sequence Stars in NGC 2264
The Astrophysical JournalInvestigating the angular momentum evolution of pre-main-sequence (PMS) stars provides important insight into the interactions between Sun-like stars and their protoplanetary disks, and the timescales that govern disk dissipation and planet formation. We
Laurin M. Gray +4 more
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The Astrophysical Journal, 2022 We present Chandra X-ray observations of six previously identified Peter Pan objects, rare ∼40 Myr systems with evidence of primordial disk retention. We observe X-ray luminosities (0.8–3.0 keV) ranging from log L _x ∼ 27.7–29.1.
Emily Laos +8 more
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SPECTROPOLARIMETRY OF THE CLASSICAL T TAURI STAR BP TAU [PDF]
The Astrophysical Journal, 2012 We implement a least-squares deconvolution (LSD) code to study magnetic fields on cool stars. We first apply our code to high resolution (R ≈ 60,000) optical echelle spectra of several solar-like stars as tests of the code and to measure the mean longitudinal magnetic field on the surface of these stars.
Chen, Wei, Johns-Krull, Christopher M.
openaire +2 more sources
Journal of Eukaryotic Microbiology, Volume 73, Issue 2, March/April 2026.ABSTRACT Protists represent a significant portion of eukaryotic diversity with a wide range of ecological roles, lifestyles, and diverse morphological traits. Despite their widespread importance in ecological systems and their potential as model organisms, most protist lineages remain poorly characterized, in part due to their small size and the fact ...
Maia V. Palka +4 more
wiley +1 more source
Variable X-Ray Emission of the Planet Hosting T Tauri Star CI Tau
The Astronomical JournalWe report results of Chandra X-ray observations of CI Tau, a young magnetically active classical T Tauri star for which previous studies have reported periodic variability attributed to a massive planet in a short-period orbit.
Stephen L. Skinner, Manuel Güdel
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High-resolution [O i] Line Spectral Mapping of TW Hya Consistent with X-Ray-driven Photoevaporation
The Astrophysical Journal Letters, 2023 Theoretical models indicate that photoevaporative and magnetothermal winds play a crucial role in the evolution and dispersal of protoplanetary disks and affect the formation of planetary systems.
Christian Rab +4 more
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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
Variability of the transitional T Tauri star T Chamaeleontis [PDF]
Astronomy & Astrophysics, 2009 We characterize the physical properties of T Chamaeleontis, a transitional T Tauri star showing UX Ori-type variability, and of its associated disc, and probe possible effects of disc clearing processes. Different spectral diagnostics are examined, based on a rich collection of optical high- and low-resolution spectra. We determine radial and projected
Schisano, E. +5 more
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Polycyclic Aromatic Hydrocarbons in Protoplanetary Disks around Herbig Ae/Be and T Tauri Stars [PDF]
, 2016 A distinct set of broad emission features at 3.3, 6.2, 7.7, 8.6, 11.3, and 12.7 μm, is often detected in protoplanetary disks (PPDs). These features are commonly attributed to polycyclic aromatic hydrocarbons (PAHs).
J. Seok, Aigen Li
semanticscholar +1 more source
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