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CHIANTI contains a large quantity of atomic data for the analysis of astrophysical spectra. Programs are available in IDL and Python to perform calculation of the expected emergent spectrum from these sources. The database includes atomic…

太阳与恒星天体物理 · 物理学 2019-04-03 Kenneth P. Dere , Giulio Del Zanna , Peter R. Young , Enrico Landi , Ralph S. Sutherland

The Cosmology Data Management system (CosmoDM) is an automated and flexible data management system for the processing and calibration of data from optical photometric surveys. It is designed to run on supercomputers and to minimize disk I/O…

天体物理仪器与方法 · 物理学 2015-07-01 S. Desai , J. J. Mohr , R. Henderson , M. Kummel , K. Paech , M. Wetzstein

The code IAC-star is presented. It generates synthetic HR and color-magnitude diagrams (CMDs) and is mainly aimed to star formation history studies in nearby galaxies. Composite stellar populations are calculated on a star by star basis, by…

天体物理学 · 物理学 2014-10-13 A. Aparicio , C. Gallart

We propose a low complexity complex valued Sphere Decoding (CV-SD) algorithm, referred to as Circular Sphere Decoding (CSD) which is applicable to multiple-input multiple-output (MIMO) systems with arbitrary two dimensional (2D)…

信息论 · 计算机科学 2016-11-17 Hwanchol Jang , Saeid Nooshabadi , Kiseon Kim , Heung-No Lee

We present a framework for cosmological model selection using Neural Networks (NNs) trained directly on simulated Cosmic Microwave Background (CMB) temperature and polarisation maps. By operating at the map level rather than on compressed…

宇宙学与河外天体物理 · 物理学 2026-04-08 Indira Ocampo , Guadalupe Cañas-Herrera

While large language models (LLMs) have shown promise in automating data science, existing agents often struggle with the complexity of real-world workflows that require exploring multiple sources and synthesizing open-ended insights. In…

人工智能 · 计算机科学 2026-02-25 Jaehyun Nam , Jinsung Yoon , Jiefeng Chen , Raj Sinha , Jinwoo Shin , Tomas Pfister

The use of machine learning is becoming ubiquitous in astronomy, but remains rare in the study of the atmospheres of exoplanets. Given the spectrum of an exoplanetary atmosphere, a multi-parameter space is swept through in real time to find…

地球与行星天体物理 · 物理学 2018-06-12 Pablo Marquez-Neila , Chloe Fisher , Raphael Sznitman , Kevin Heng

Stark broadening theory is currently operated for calculating widths and shifts of spectral lines that are needed for spectroscopic diagnostics and modelling in astrophysics, laboratory and technological plasmas. We have calculated a great…

太阳与恒星天体物理 · 物理学 2018-03-14 Sylvie Sahal-Brechot , Milan S. Dimitrijevic , Nebil Ben Nessib

In this contribution, we present the StaggerGrid, a collaborative project for the construction of a comprehensive grid of time-dependent, three-dimensional (3D), hydrodynamic model atmospheres of solar- and late-type stars with different…

太阳与恒星天体物理 · 物理学 2015-05-30 Remo Collet , Zazralt Magic , Martin Asplund

Serverless query processing has become increasingly popular due to its advantages, including automated resource management, high elasticity, and pay-as-you-go pricing. For users who are not system experts, serverless query processing…

数据库 · 计算机科学 2024-12-24 Haoqiong Bian , Dongyang Geng , Haoyang Li , Yunpeng Chai , Anastasia Ailamaki

The importance of databases of reliable and accurate data in chemistry has substantially increased in the past two decades. Their main usage is to parametrize electronic structure theory methods, and to assess their capabilities and…

化学物理 · 物理学 2023-11-10 Pierpaolo Morgante , Roberto Peverati

Synthetic stellar spectra are extensively used for many different applications in astronomy, from stellar studies (such as in the determination of atmospheric parameters of observed stellar spectra), to extragalactic studies (e.g. as one of…

太阳与恒星天体物理 · 物理学 2017-04-05 Jessica R. Kitamura , Lucimara P. Martins , Paula Coelho

The "cosmic web", the filamentary large-scale structure in a cold dark matter Universe, is readily apparent via galaxy tracers in spectroscopic surveys. However, the underlying dark matter structure is as of yet unobservable and mapping the…

宇宙学与河外天体物理 · 物理学 2023-01-10 Matthew C. Wilde , Oskar Elek , Joseph N. Burchett , Daisuke Nagai , J. Xavier Prochaska , Jessica Werk , Sarah Tuttle , Angus G. Forbes

Object Storage Systems (OSS) inside a cloud promise scalability, durability, availability, and concurrency. However, open-source OSS does not have a specific approach to letting users and administrators search based on the data, which is…

分布式、并行与集群计算 · 计算机科学 2023-05-09 Jannatun Noor , Rizwanul Haque Ratul , Mir Rownak Ali Uday , Joyanta Jyoti Mondal , Md. Sadiqul Islam Sakif , A. B. M. Alim Al Islam

Nowadays medium-large size astronomical projects have to face the management of a large amount of information and data. Dedicated data centres manage the collection of raw and processed data and consequently make them accessible, typically…

天体物理学 · 物理学 2007-05-23 Luciano Nicastro , Giorgio Calderone

Traditional relational databases contain a lot of latent semantic information that have largely remained untapped due to the difficulty involved in automatically extracting such information. Recent works have proposed unsupervised machine…

ClusterPyXT is a new software pipeline to generate spectral temperature, X-ray surface brightness, pressure, and density maps from X-ray observations of galaxy clusters. These data products help elucidate the physics of processes occurring…

高能天体物理现象 · 物理学 2019-06-07 Brian Alden , Eric J. Hallman , David Rapetti , Jack O. Burns , Abhirup Datta

Transmission spectroscopy is a key avenue for the near-term study of small-planet atmospheres and the most promising method when it comes to searching for atmospheres on temperate rocky worlds, which are often too cold for planetary…

天体物理仪器与方法 · 物理学 2025-08-28 Caroline Piaulet-Ghorayeb

Graphs model several real-world phenomena. With the growth of unstructured and semi-structured data, parallelization of graph algorithms is inevitable. Unfortunately, due to inherent irregularity of computation, memory access, and…

分布式、并行与集群计算 · 计算机科学 2023-05-08 Nibedita Behera , Ashwina Kumar , Ebenezer Rajadurai T , Sai Nitish , Rajesh Pandian M , Rupesh Nasre

Crystal structure prediction (CSP) stands as a powerful tool in materials science, driving the discovery and design of innovative materials. However, existing CSP methods heavily rely on formation enthalpies derived from density functional…

材料科学 · 物理学 2025-07-16 Chenglong Qin , Jinde Liu , Shiyin Ma , Jiguang Du , Gang Jiang , Liang Zhao