Results 1 to 10 of about 11,734 (199)
Stellar Population Properties in the Stellar Streams around SPRC047
The Astrophysical JournalWe have investigated the properties (e.g., age, metallicity) of the stellar populations of a ringlike tidal stellar stream (or streams) around the edge-on galaxy SPRC047 ( z = 0.031) using spectral energy distribution (SED) fits to ...
Seppo Laine +7 more
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Planetary Nebulae and the Ionization of the Interstellar Medium in Galaxies
Frontiers in Astronomy and Space Sciences, 2022 We discuss the role of planetary nebulae and their progeny in galaxy context in terms of ionization of the galaxy interstellar medium. This regards ionized gas outside the disk of spiral galaxies, the diffuse ionized medium in spiral galaxies, and the ...
Grażyna Stasińska +2 more
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The C/M Ratio of AGB Stars in the Local Group Galaxies
Universe, 2022 The number ratio of carbon-rich to oxygen-rich asymptotic giant branch (AGB) stars (the so-called C/M ratio) is closely related to the evolution environment of the host galaxy.
Tongtian Ren +3 more
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The Evolution of Stellar Populations [PDF]
Astrophysics and Space Science, 2001 10 pages, no figures, To appear in Proceedings of First Euroconference "The Evolution of Galaxies. I-Observational Clues" (Astrophys. & Sp. Sc., Vilchez, Stasinska, and Perez, eds. Kluwer)
Díaz Beltrán, Ángeles Isabel +1 more
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Galaxies, 2020 Luminous Blue Variables are massive evolved stars, here we introduce this outstanding class of objects. Described are the specific characteristics, the evolutionary state and what they are connected to other phases and types of massive stars. Our current
Kerstin Weis, Dominik J. Bomans
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A Hierarchical Bayesian Framework for Inferring the Stellar Obliquity Distribution
The Astronomical Journal, 2023 Stellar obliquity, the angle between a planet’s orbital axis and its host star’s spin axis, traces the formation and evolution of a planetary system. In transiting-exoplanet observations, only the sky-projected stellar obliquity can be measured, but this
Jiayin Dong, Daniel Foreman-Mackey
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Stellar populations with ELTs [PDF]
Proceedings of the International Astronomical Union, 2005 The star formation, mass assembly and chemical enrichment histories of galaxies, and their present distributions of dark matter, remain encoded in their stellar populations. Distinguishing the actual distribution functions of stellar age, metallicity and kinematics at several locations in a range of galaxies, sampling across Hubble types and ...
Gerard Gilmore, Rosemary F. G. Wyse
openaire +4 more sources
The Astrophysical Journal, 2023 We investigate the mass–metallicity relationship of star-forming galaxies by analyzing the absorption line spectra of ∼200,000 galaxies in the Sloan Digital Sky Survey.
Eva Sextl +3 more
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A Study of Primordial Very Massive Star Evolution
The Astrophysical Journal, 2023 We present new evolutionary models of primordial very massive stars with initial masses ranging from 100 to 1000 M _⊙ that extend from the main sequence to the onset of dynamical instability caused by the creation of electron–positron pairs during core C,
Guglielmo Volpato +5 more
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LATIS: The Stellar Mass–Metallicity Relation of Star-forming Galaxies at z ∼ 2.5
The Astrophysical Journal, 2023 We present the stellar mass–stellar metallicity relation for 3491 star-forming galaxies at 2 ≲ z ≲ 3 using rest-frame far-ultraviolet spectra from the Ly α Tomography IMACS Survey (LATIS).
Nima Chartab +4 more
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