Do Red Galaxies Form More Stars than Blue Galaxies? [PDF]
The Astrophysical JournalA new model is proposed in which typical galaxies form most of their stellar mass in a phase with an intrinsically red stellar population. In the standard picture, galaxies with intrinsically red stellar populations are believed to have old stellar ...
Charles L. Steinhardt
doaj +2 more sources
Modeling Tracers of Young Stellar Population Age in Star-Forming Galaxies [PDF]
, 2013 The young stellar population of a star-forming galaxy is the primary engine driving its radiative properties. As a result, the age of a galaxy's youngest generation of stars is critical for a detailed understanding of its star formation history, stellar content, and evolutionary state. Here we present predicted equivalent widths for the H-beta, H-alpha,
E. Levesque, C. Leitherer
arxiv +3 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
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 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
Stellar population synthesis at the resolution of 2003 [PDF]
, 2003 We present a new model for computing the spectral evolution of stellar populations at ages between 1 x 10 5 and 2 x 10 1 0 yr at a resolution of 3 A across the whole wavelength range from 3200 to 9500 A for a wide range of metallicities.
G. Bruzual, S. Charlot
semanticscholar +1 more source