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The spectral energy distribution (SED) of galaxies provides fundamental information on the related physical processes. However, the SED is significantly affected by dust in its interstellar medium. Dust is mainly produced by asymptotic…

Astrophysics of Galaxies · Physics 2022-05-25 Kazuki Y. Nishida , Tsutomu T. Takeuchi , Takuma Nagata , Ryosuke S. Asano

With the advent of billion-galaxy surveys with complex data, the need of the hour is to efficiently model galaxy spectral energy distributions (SEDs) with robust uncertainty quantification. The combination of Simulation-Based inference…

Astrophysics of Galaxies · Physics 2022-11-18 Gourav Khullar , Brian Nord , Aleksandra Ciprijanovic , Jason Poh , Fei Xu

We test the efficacy of the energy-balance spectral energy distribution (SED) fitting code Magphys for recovering the spatially-resolved properties of a simulated isolated disc galaxy, for which it was not designed. We perform 226,950…

Astrophysics of Galaxies · Physics 2018-02-21 Daniel J. B. Smith , Christopher C. Hayward

Traditional spectral energy distribution (SED)-fitting methods for stellar mass estimation face persistent challenges including systematic biases and computational constraints. We present a controlled comparison of machine learning (ML) and…

Astrophysics of Galaxies · Physics 2026-02-03 Vahid Asadi , Akram Hasani Zonoozi , Hosein Haghi

We introduce a new technique based on artificial neural networks which allows us to make accurate predictions for the spectral energy distributions (SEDs) of large samples of galaxies, at wavelengths ranging from the far-ultra-violet to the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 C. Almeida , C. M. Baugh , C. G. Lacey , C. S. Frenk , G. L. Granato , L. Silva , A. Bressan

We introduce the Dense Basis method for Spectral Energy Distribution (SED) fitting. It accurately recovers traditional SED parameters, including M$_*$, SFR and dust attenuation, and reveals previously inaccessible information about the…

Astrophysics of Galaxies · Physics 2017-04-12 Kartheik G. Iyer , Eric Gawiser

We provide a library of some 7000 SEDs (available at www.eso.org/~rsiebenm) for the nuclei of starburst and ultra luminous galaxies. Its purpose is to quickly obtain estimates of the basic parameters, such as luminosity, size and dust or…

Astrophysics · Physics 2009-11-11 Ralf Siebenmorgen , Endrik Kruegel

We present a framework for analysing panchromatic and spatially resolved galaxy observations, dubbed SE3D. SE3D simultaneously and self-consistently models a galaxy's spectral energy distribution and its spectral distributions of global…

Astrophysics of Galaxies · Physics 2026-05-19 Steven Ramnichal , Junkai Zhang , Stijn Wuyts , Cheng Li

We introduce a new physically-motivated spectral template set for fitting the spectral energy distributions (SEDs) of high-z galaxies. We use the public galaxy formation code ARES to generate star formation histories of thirteen…

Astrophysics of Galaxies · Physics 2025-10-29 Judah Luberto , Steven Furlanetto , Jordan Mirocha

Derivation of physical properties of galaxies using spectral energy distribution (SED) fitting is a powerful method, but can suffer from various systematics arising from model assumptions. Previously, such biases were mostly studied in the…

Astrophysics of Galaxies · Physics 2022-04-27 Katherine Zine , Samir Salim

This study examines the characterization of binary star systems using Spectral Energy Distributions (SEDs), a technique increasingly essential with the rise of large-scale astronomical surveys. Binaries can emit flux at different regions of…

Solar and Stellar Astrophysics · Physics 2025-03-20 Vikrant V. Jadhav

Different stellar populations may be identified through differences in chemical, kinematic, and chronological properties, suggesting the interplay of various physical mechanisms that led to their origin and subsequent evolution. As such,…

Astrophysics of Galaxies · Physics 2025-03-26 A. W. Neitzel , T. L. Campante , D. Bossini , A. Miglio

Bayesian model comparison frameworks can be used when fitting models to data in order to infer the appropriate model complexity in a data-driven manner. We aim to use them to detect the correct number of major episodes of star formation…

Astrophysics of Galaxies · Physics 2021-01-27 Andrew J. Lawler , Viviana Acquaviva

To aid the understanding of the non-linear relationship between galaxy properties and predicted spectral energy distributions (SED), we present a new interactive graphical user interface (GUI) tool pipes_vis based on Bagpipes…

Astrophysics of Galaxies · Physics 2021-07-28 Ho-Hin Leung , Vivienne Wild , Adam Carnall , Michail Papathomas

Spectral Energy Distribution (SED) fitting is a well-developed astrophysical tool that has recently been applied to high-redshift Lyman Alpha-emitting galaxies. If rest-frame ultraviolet through near-infrared photometry is available, it…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Eric Gawiser

We present a new numerical code which is designed to derive a spectral energy distribution (SED) for an arbitrary spatial distribution of stellar and gaseous components in a dusty starburst galaxy. We apply a ray tracing method to numerical…

Astrophysics · Physics 2009-10-31 Kenji Bekki , Yasuhiro Shioya

We present a novel method to estimate galaxy physical properties from spectral energy distributions (SEDs), alternate to template fitting techniques and based on self-organizing maps (SOM) to learn the high-dimensional manifold of a…

[Abridged] Although galaxies are found to follow a tight relation between their star formation rate and stellar mass, they are expected to exhibit complex star formation histories (SFH), with short-term fluctuations. The goal of this pilot…

Astrophysics of Galaxies · Physics 2020-03-25 G. Aufort , L. Ciesla , P. Pudlo , V. Buat

Model fitting is frequently used to determine the shape of galaxies and the point spread function, for examples, in weak lensing analyses or morphology studies aiming at probing the evolution of galaxies. However, the number of parameters…

Cosmology and Nongalactic Astrophysics · Physics 2012-10-03 Guoliang Li , Bo Xin , Wei Cui

The forthcoming CSST wide-field multiband imaging survey will produce seven-band photometric spectral energy distributions (SEDs) for billions of galaxies. The effective extraction of astronomical information from these massive datasets of…

Astrophysics of Galaxies · Physics 2023-09-26 Yunkun Han , Lulu Fan , XianZhong Zheng , Jin-Ming Bai , Zhanwen Han