Results 21 to 30 of about 2,667,539 (275)
Space Science Reviews, 2022 The overarching theme of the Orbiting Astronomical Satellite for Investigating Stellar Systems (OASIS), an Astrophysics MIDEX-class mission concept, is Following water from galaxies, through protostellar systems, to Earth’s oceans.
C. Anderson +8 more
semanticscholar +1 more source
Stellar Population Astrophysics (SPA) with TNG [PDF]
Astronomy & Astrophysics, 2020 Context. Open clusters are excellent tracers of the chemical evolution of the Galactic disc. The spatial distribution of their elemental abundances, through the analysis of high-quality and high-resolution spectra, provides insight into the chemical ...
G. Casali +11 more
semanticscholar +1 more source
Stellar population astrophysics (SPA) with the TNG [PDF]
Astronomy & Astrophysics, 2019 Context. Open clusters exquisitely track the Galactic disc chemical properties and its time evolution; a substantial number of studies and large spectroscopic surveys focus mostly on the chemical content of relatively old clusters (age ≳ 1 Gyr ...
V. d'orazi +10 more
semanticscholar +3 more sources
MESA ISOCHRONES AND STELLAR TRACKS (MIST). I. SOLAR-SCALED MODELS [PDF]
, 2016 This is the first of a series of papers presenting the Modules for Experiments in Stellar Astrophysics (MESA) Isochrones and Stellar Tracks (MIST) project, a new comprehensive set of stellar evolutionary tracks and isochrones computed using MESA, a state-
Jieun Choi +5 more
semanticscholar +1 more source
Internal gravity waves in massive stars. II. Frequency analysis across stellar mass [PDF]
Astronomy & Astrophysics, 2023 Stars with masses above 1.6 solar masses generally possess convective cores and radiative envelopes, which allows the propagation of outward-travelling internal gravity waves. We have studied the generation and propagation of IGWs in such stars using two-
R. Ratnasingam +6 more
semanticscholar +1 more source
A Comparison between Physics-based and Polytropic MHD Models for Stellar Coronae and Stellar Winds of Solar Analogs [PDF]
, 2017 The development of the Zeeman–Doppler Imaging (ZDI) technique has provided synoptic observations of surface magnetic fields of low-mass stars. This led the stellar astrophysics community to adopt modeling techniques that have been used in solar physics ...
O. Cohen
semanticscholar +1 more source
Stromlo Stellar Tracks: the importance of non-Solar scaled abundances for massive stars
, 2021 I present the Stromlo Stellar Tracks [1], a set of stellar evolutionary tracks for massive stars (>10 M ), computed by modifying the Modules for Experiments in Stellar Astrophysics (MESA) 1D stellar evolution package, to fit the Galactic Concordance ...
K. Grasha
semanticscholar +1 more source
25 Years of Self-Organized Criticality: Solar and Astrophysics [PDF]
Space Science Reviews, 2014 Shortly after the seminal paper “Self-Organized Criticality: An explanation of 1/fnoise” by Bak et al. (1987), the idea has been applied to solar physics, in “Avalanches and the Distribution of Solar Flares” by Lu and Hamilton (1991).
M. Aschwanden +14 more
semanticscholar +1 more source
Astrophysical Rates for Explosive Nucleosynthesis: Stellar and Laboratory Rates for Exotic Nuclei [PDF]
Nucl.Phys.A834:635c-638c,2010, 2009 A selected overview of stellar effects and reaction mechanisms with relevance to the prediction of astrophysical reaction rates far off stability is provided.
arxiv +1 more source
The Role of Mixing in Astrophysics [PDF]
Astrophys.J.Suppl. 127 (2000) 213-218, 1999 The role of hydrodynamic mixing in astrophysics is reviewed, emphasizing connections with laser physics experiments and inertial confinement fusion (ICF). Computer technology now allows two dimensional (2D) simulations, with complex microphysics, of stellar hydrodynamics and evolutionary sequences, and holds the promise for 3D.
arxiv +1 more source