Results 81 to 90 of about 170,850 (201)

Optimising the global detection of solar-like oscillations

open access: yesAstronomy & Astrophysics
Context. A well-established method exists for predicting the detectability of solar-like oscillations that has seen extensive application supporting target selection strategies for space-based photometric missions.
Lund Mikkel N., Chaplin William J.
doaj   +1 more source

THE STEADY-STATE WIND MODEL FOR YOUNG STELLAR CLUSTERS WITH AN EXPONENTIAL STELLAR DENSITY DISTRIBUTION [PDF]

open access: yes, 2011
A hydrodynamic model for steady-state, spherically symmetric winds driven by young stellar clusters with an exponential stellar density distribution is presented.
GUILLERMO TENORIO TAGLE   +2 more
core  

Constraining Stellar Rotation at the Zero-age Main Sequence with TESS [PDF]

open access: yes
The zero-age main sequence (ZAMS) is a critical phase for stellar angular momentum evolution, as stars transition from contraction-dominated spin-up to magnetic wind-dominated spin-down.
A. A. Breimann   +17 more
core   +1 more source

The nature and origin of disky elliptical galaxies [PDF]

open access: yes, 2002
The observational trend that disky elliptical galaxies exhibit younger luminosity- weighted ages than boxy ellipticals is investigated. The presence of a possible young stellar disk embedded in these galaxies is explored by comparing kinematics derived ...
McDermid, Richard Morgan
core  

Stellar chromospheric activity in main-sequence stars [PDF]

open access: yes
The research presented here presents a narrow slice of several largescale, ground-based astronomy surveys focused on chromospheric activity measurements of stars from the Keck Observatory.
Isaacson, Howard
core   +1 more source

Solar and stellar eclipse mapping [PDF]

open access: yes, 2007
Workshop on Solar and Stellar Physics through Eclipses -- MAR 27-29, 2006 -- Ankara Univ, ORSEM Campus, Side, Antalya, TURKEYThe special circumstance of solar eclipse affords an opportunity to review its background, particularly in the cultural context ...
Budding, Edwin
core   +1 more source

The Shape of Stellar Convection

open access: yes
Recent space missions such as Kepler, TESS, and soon PLATO have provided an abundance of high-quality stellar data, highlighting the need for more accurate models of stellar structure and evolution.
Mary Geer Dethero
core   +1 more source

The effect of variable stellar magnetic fields on the spin state of T Tauri stars

open access: yesAstronomy & Astrophysics
Understanding the stellar spin evolution of young stars is crucial for understanding the evolution of protoplanetary disks and, consequently, the formation of exoplanets.
Gehrig Lukas, Steiner Daniel
doaj   +1 more source

A Stellar Conversation with scientist, engineer and astronaut Jan Davis

open access: yes, 2008
Includes descriptive metadata provided by producer in MP3 file: "Stellar Conversations - Podcasts - A Stellar Conversation with scientist, engineer and astronaut Jan Davis." By news@vanderbilt.edu (Vanderbilt News Service).
Chappell, Rick, 1943-, Davis, Jan, 1953-
core  

The Oxidation–Deuteration Processes of Large, Astronomically Relevant Cationic Polycyclic Aromatic Hydrocarbons

open access: yesThe Astrophysical Journal
In interstellar environments, gas-phase polycyclic aromatic hydrocarbon (PAH) predominantly involves (photo)fragmentation, hydrogenation, and oxidation chemical routes, which lead to the formation of complex organic species.
Xiaoyi Hu   +5 more
doaj   +1 more source

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