Results 31 to 40 of about 867,673 (304)
Stellar age determination in the mass–luminosity plane
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT The ages of stars have historically relied on isochrone fitting of standardized grids of models. While these stellar models have provided key constraints on observational samples of massive stars, they inherit many systematic uncertainties, mainly in the internal mixing mechanisms applied throughout the grid, fundamentally ...
Higgins, Erin R., Vink, Jorick S.
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The Astronomical Journal, 2023 We report the discovery and characterization of a nearby (∼85 pc), older (27 ± 3 Myr), distributed stellar population near Lower Centaurus Crux (LCC), initially identified by searching for stars comoving with a candidate transiting planet from TESS (HD ...
Mackenna L. Wood +37 more
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The Abundance of S-Process Elements: Temporal and Spatial Trends from Open Cluster Observations
Universe, 2022 Spectroscopic observations of stars belonging to open clusters, with well-determined ages and distances, are a unique tool for constraining stellar evolution, nucleosynthesis, mixing processes, and, ultimately, Galactic chemical evolution.
Laura Magrini +8 more
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Stellar Seismology, Stellar Ages and the Cosmological Constant
, 2001 Solar seismology has allowed precision measurements of both the static and dynamic structure of our local star, the Sun. In the near future, seismology of solar-like stars of different ages and masses, necessarily restricted by angular resolution to low l-modes, will allow studies of the internal structure of stars at various stages of evolution.
Isaak, George R., Isaak, Kate G.
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THE AGE AND STELLAR PARAMETERS OF THE PROCYON BINARY SYSTEM [PDF]
The Astrophysical Journal, 2013 Accepted for the Astrophysical Journal, in ...
Liebert, James +4 more
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Influence of surface stressing on stellar coronae and winds [PDF]
, 2013 STFC funding has supported this research.The large-scale field of the Sun is well represented by its lowest energy (or potential) state. Recent observations, by comparison, reveal that many solar-type stars show large-scale surface magnetic fields that ...
Morin, J. +13 more
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Wrinkles in Time. I. Rapid Rotators Found in High-eccentricity Orbits
The Astrophysical Journal, 2023 Recent space-based missions have ushered in a new era of observational astronomy, where high-cadence photometric light curves for thousands to millions of stars in the solar neighborhood can be used to test and apply stellar age-dating methods, including
Rayna Rampalli +4 more
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Frontiers in Astronomy and Space Sciences, 2017 We present the galactic stellar age—velocity dispersion relation obtained from a semi-analytic model of galaxy formation. We divide galaxies into two populations: galaxies which have over-massive/under-massive black holes (BHs) against the best-fitting ...
Hikari Shirakata +3 more
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cx2204/stellar-radius: stellar radius microphysics
, 2022 Full Changelog: https://github.com/cx2204/stellar-radius/commits/v1.
cx2204
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Towards age/rotation/magnetic activity relation with seismology
EPJ Web of Conferences, 2015 The knowledge of stellar ages directly impacts the characterization of a planetary system as it puts strong constraints on the moment when the system was born. Unfortunately, the determination of precise stellar ages is a very difficult task.
Mathur Savita
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