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We introduce PyMGal, a Python package for generating optical mock observations of galaxies from hydrodynamical simulations. PyMGal reads the properties of stellar particles from these simulations and generates spectral energy distributions…

星系天体物理 · 物理学 2025-07-02 Patrick Janulewicz , Weiguang Cui

We have developed a method for fast and accurate stellar population parameters determination in order to apply it to high resolution galaxy spectra. The method is based on an optimization technique that combines active learning with an…

天体物理学 · 物理学 2010-11-11 Thamar Solorio , Olac Fuentes , Roberto Terlevich , Elena Terlevich

We present Artificial Stellar Populations (ArtPop), an open-source Python package for synthesizing stellar populations and generating artificial images of fully populated stellar systems. The code is designed to be intuitive to use and as…

星系天体物理 · 物理学 2022-12-21 Johnny P. Greco , Shany Danieli

Continuous glucose monitoring (CGM) generates dense data streams critical for diabetes management, but most used forecasting models lack interpretability for clinical use. We present SSM-CGM, a Mamba-based neural state-space forecasting…

机器学习 · 计算机科学 2025-10-07 Shakson Isaac , Yentl Collin , Chirag Patel

Stochastic computing (SC) is a high density, low-power computation technique which encodes values as unary bitstreams instead of binary-encoded (BE) values. Practical SC implementations require deterministic or pseudo-random number…

新兴技术 · 计算机科学 2019-02-28 Vincent T. Lee , Samuel Archibald Elliot , Armin Alaghi , Luis Ceze

Infrared singularities in perturbative Quantum Chromodynamics (QCD) are captured by the Soft function, which can be calculated efficiently using Feynman diagrams known as webs. The starting point for calculating Soft function using webs is…

高能物理 - 唯象学 · 物理学 2025-07-29 Neelima Agarwal , Sourav Pal , Aditya Srivastav , Anurag Tripathi

Comparison with artificial galaxy models is essential for translating the incomplete and low signal-to-noise data we can obtain on astrophysical stellar populations to physical interpretations which describe their composition, physical…

星系天体物理 · 物理学 2020-05-06 Elizabeth R. Stanway

The theoretical relation between the number of post main sequence stars from stellar populations and their total mass in investigated. This is used to derive some basic relations between the stellar number counts of stellar populations with…

天体物理学 · 物理学 2007-05-23 L. Greggio

We present the software package binary_c-python which provides a convenient and easy-to-use interface to the binary_c framework, allowing the user to rapidly evolve individual systems and populations of stars. binary_c-python is available…

太阳与恒星天体物理 · 物理学 2023-06-06 D. D. Hendriks , R. G. Izzard

We introduce our new code MYOSOTIS (Make Your Own Synthetic ObservaTIonS) which is designed to produce synthetic observations from simulated clusters. The code can synthesise observations from both ground- and spaced-based observatories,…

The basic assumptions behind Population Synthesis and Spectral Evolution models are reviewed. The numerical problems encountered by the standard population synthesis technique when applied to models with truncated star formation rates are…

天体物理学 · 物理学 2007-05-23 Gustavo Bruzual A

The combination of spectroscopic stellar metallicities and resolved star color-magnitude diagrams (CMDs) has the potential to constrain the entire star formation and chemical enrichment history (SFH) of a galaxy better than fitting CMDs…

天体物理仪器与方法 · 物理学 2016-07-20 Andrew E. Dolphin

We investigate the color-magnitude diagram (CMD) of the Carina dwarf spheroidal galaxy using data of Stetson et al. (2011) and synthetic CMDs based on isochrones of Dotter et al. (2008), in terms of the parameters [Fe/H], age, and…

星系天体物理 · 物理学 2017-07-26 John E. Norris , David Yong , Kim A. Venn , Aaron Dotter , Luca Casagrande , Gerard Gilmore

We investigate the uncertainties in the synthetic integrated colors of simple stellar populations. Three types of uncertainties are from the stellar models, the population synthesis techniques, and from the spectral libraries. Despite some…

天体物理学 · 物理学 2011-07-18 Sukyoung K. Yi

It is now possible to measure detailed spectral indices for stellar populations in spiral disks. We propose to interpret these data using evolutionary synthesis models computed from the Star Formation Histories obtained from chemical…

天体物理学 · 物理学 2015-06-24 M. Molla , S. Cantin , C. Robert , A. Pellerin , E. Hardy

Interpreting galactic luminosity requires assumptions about the galaxy-wide initial mass function (gwIMF), often assumed invariant in most stellar population synthesis (SPS) models. If stars form in clusters with metallicity- and…

星系天体物理 · 物理学 2025-02-07 Akram Hasani Zonoozi , Hosein Haghi , Pavel Kroupa

Simulating a survey of fluxes and redshifts (distances) from an astrophysical population is a routine task. \texttt{popsynth} provides a generic, object-oriented framework to produce synthetic surveys from various distributions and…

天体物理仪器与方法 · 物理学 2021-07-20 J. Michael Burgess , Francesca Capel

We introduce CPISM, a simulation program developed for the Cool Planet Imaging Coronagraph (CPI-C) on the China Space Station Telescope (CSST). CPISM supports high-contrast exoplanet imaging by simulating observational conditions and…

天体物理仪器与方法 · 物理学 2026-03-17 Yi-Ming Zhu , Gang Zhao , Jiang-Pei Dou , Zhong-Hua Lv , Yi-Li Chen , Bo Ma , Zhao-Jun Yan , Jing Tang , Ran Li

Colour-magnitude diagrams (CMDs) are powerful tools that might be used to infer stellar properties in globular clusters (GCs), for example, the binary fraction and their mass ratio ($q$) distribution. In the past few years, observations…

星系天体物理 · 物理学 2017-07-17 Diogo Belloni , Abbas Askar , Mirek Giersz , Pavel Kroupa , Helio J. Rocha-Pinto

In this tutorial paper we summarize how the star formation (SF) history of a galactic region can be derived from the colour-magnitude diagram (CMD) of its resolved stars. The procedures to build synthetic CMDs and to exploit them to derive…

星系天体物理 · 物理学 2015-05-14 Michele Cignoni , Monica Tosi