Results 1 to 10 of about 6,036,692 (266)
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
doaj +4 more sources
Short GRB Host Galaxies. II. A Legacy Sample of Redshifts, Stellar Population Properties, and Implications for Their Neutron Star Merger Origins [PDF]
Astrophysical Journal, 2022 We present the stellar population properties of 69 short gamma-ray burst (GRB) host galaxies, representing the largest uniformly modeled sample to date. Using the Prospector stellar population inference code, we jointly fit photometry and/or spectroscopy
A. Nugent +16 more
semanticscholar +1 more source
Rapid Stellar and Binary Population Synthesis with COMPAS [PDF]
Astrophysical Journal Supplement Series, 2021 Compact Object Mergers: Population Astrophysics and Statistics (COMPAS; https://compas.science) is a public rapid binary population synthesis code. COMPAS generates populations of isolated stellar binaries under a set of parameterized assumptions in ...
J. Riley +23 more
semanticscholar +1 more source
Stellar Population Inference with Prospector [PDF]
Astrophysical Journal Supplement Series, 2020 Inference of the physical properties of stellar populations from observed photometry and spectroscopy is a key goal in the study of galaxy evolution.
Benjamin D. Johnson +3 more
semanticscholar +1 more source
Setting the Stage for Cosmic Chronometers. II. Impact of Stellar Population Synthesis Models Systematics and Full Covariance Matrix [PDF]
Astrophysical Journal, 2020 The evolution of differential ages of passive galaxies at different redshifts (cosmic chronometers) has been proved to be a method potentially able to constrain the Hubble parameter in a cosmology-independent way, but the systematic uncertainties must be
Michele Moresco +4 more
semanticscholar +1 more source
SPISEA: A Python-based Simple Stellar Population Synthesis Code for Star Clusters [PDF]
Astronomical Journal, 2020 We present Stellar Population Interface for Stellar Evolution and Atmospheres (SPISEA), an open-source Python package that simulates simple stellar populations.
Matthew W. Hosek Jr. +6 more
semanticscholar +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
openaire +3 more sources
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
doaj +1 more source