Results 101 to 110 of about 20,039 (169)

VLT/MUSE Detection of the AB Aurigae b Protoplanet with Hα Spectroscopy

open access: yesThe Astrophysical Journal Letters
We analyze high-contrast, medium-spectral-resolution H _α observations of the star AB Aurigae using the Very Large Telescope's Multi Unit Spectroscopic Explorer (MUSE).
Thayne Currie   +8 more
doaj   +1 more source

Erratum: “The Disk Substructures at High Angular Resolution Project (DSHARP). II. Characteristics of Annular Substructures” (2018, ApJL, 869, L42)

open access: yesThe Astrophysical Journal Letters, 2020
Jane Huang   +16 more
openaire   +2 more sources

Dust Budget Crisis in Little Red Dots

open access: yesThe Astrophysical Journal Letters
Little red dots (LRDs), a population of active galactic nuclei (AGNs) recently identified by JWST, are characterized by their compact morphology and red optical continuum emission, which is often interpreted as evidence for significant dust extinction of
Kejian Chen   +3 more
doaj   +1 more source

A Strong He ii λ1640 Emitter with an Extremely Blue UV Spectral Slope at z = 8.16: Presence of Population III Stars?

open access: yesThe Astrophysical Journal Letters
Cosmic hydrogen reionization and cosmic production of the first metals are major phase transitions of the Universe occurring during the first billion years after the Big Bang; however, these are still underexplored observationally. Using the JWST/NIRSpec
Xin Wang   +14 more
doaj   +1 more source

Simulation of Image-Guided Microwave Ablation Therapy Using a Digital Twin Computational Model

open access: yesIEEE Open Journal of Engineering in Medicine and Biology
Emerging computational tools such as healthcare digital twin modeling are enabling the creation of patient-specific surgical planning, including microwave ablation to treat primary and secondary liver cancers.
Frankangel Servin   +8 more
doaj   +1 more source

Multiple Subscale Magnetic Reconnection Embedded inside a Heliospheric Current Sheet Reconnection Exhaust: Evidence for Flux Rope Merging

open access: yesThe Astrophysical Journal Letters
We report observations of multiple subscale reconnecting current sheets embedded inside a large-scale heliospheric current sheet (HCS) reconnection exhaust.
T. D. Phan   +21 more
doaj   +1 more source

Cospatial Multiwavelength Observations of an Eruptive Prominence as the Bright Core of a Coronal Mass Ejection

open access: yesThe Astrophysical Journal Letters
Coronal mass ejections (CMEs), as seen in white-light (WL) coronagraphs, often exhibit a classic three-part structure consisting of a bright front, a dark cavity, and a bright core.
Bin Zhuang   +10 more
doaj   +1 more source

Formation of Be Stars via Wind Accretion: Case Study on Black Hole + Be Star Binaries

open access: yesThe Astrophysical Journal Letters
Be stars are rapidly rotating main-sequence stars that play a crucial role in understanding stellar evolution and binary interactions. In this Letter, we propose a new formation scenario for black hole (BH) + Be star binaries (hereafter BHBe binaries ...
Zhenwei Li   +7 more
doaj   +1 more source

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