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We review the implications of the Gaia Data Release 2 catalogue for studying the dynamics of Milky Way globular clusters, focusing on two separate topics. The first one is the analysis of the full 6-dimensional phase-space distribution of…

Astrophysics of Galaxies · Physics 2020-03-18 Eugene Vasiliev

Time series data are integral to critical applications across domains such as finance, healthcare, transportation, and environmental science. While recent work has begun to explore multi-task time series question answering (QA), current…

Context. Gaia Early Data Release 3 (EDR3), published in December 2020, features improved photometry and astrometry over that published in the previous DR2 file, and includes a substantially larger number of sources, of the order of 2,000…

Astrophysics of Galaxies · Physics 2021-12-14 I. González-Santamaría , M. Manteiga , A. Manchado , A. Ulla , C. Dafonte , P. López Varela

The Gaia mission is described, along with its scientific potential and its updated science perfomances. Although it is often described as a self-calibrated mission, Gaia still needs to tie part of its measurements to external scales (or to…

Instrumentation and Methods for Astrophysics · Physics 2012-07-09 E. Pancino

Aims. The photometric validation of the Gaia DR1 release of the ESA Gaia mission is described and the quality of the data shown. Methods. This is carried out via an internal analysis of the photometry using the most constant sources.…

Instrumentation and Methods for Astrophysics · Physics 2017-03-29 D. W. Evans , M. Riello , F. De Angeli , G. Busso , F. van Leeuwen , C. Jordi , C. Fabricius , A. G. A. Brown , J. M. Carrasco , H. Voss , M. Weiler , P. Montegriffo , C. Cacciari , P. Burgess , P. Osborne

Gaia's astrometric solution aims to determine at least five parameters for each star, together with appropriate estimates of their uncertainties and correlations. This requires at least five distinct observations per star. In the early data…

Instrumentation and Methods for Astrophysics · Physics 2015-10-28 Daniel Michalik , Lennart Lindegren , David Hobbs , Alexey G. Butkevich

In the new era of large-scale astronomical surveys, automated methods of analysis and classification of bulk data are a fundamental tool for fast and efficient production of deliverables. This becomes ever more imminent as we enter the Gaia…

Instrumentation and Methods for Astrophysics · Physics 2017-06-28 A. Kochoska , N. Mowlavi , A. Prsa , I. Lecoeur-Taibi , B. Holl , L. Rimoldini , M. Suveges , L. Eyer

Gaia, the European Space Agency spacecraft successfully launched on 19 December 2013, entered into nominal science operations on 18 July 2014 after a few months of commissioning, and has been scanning the sky to a faint limit of G = 20.7…

Astrophysics of Galaxies · Physics 2016-02-24 Gisella Clementini

The sheer size of high-accuracy, multi-band photometry, spectroscopy, astrometry and seismic data that space missions like Kepler, Gaia, PLATO, TESS, JWST and ground-based facilities under development such as MOONS, WEAVE and the LSST will…

Solar and Stellar Astrophysics · Physics 2020-01-08 Gisella Clementini , Marcella Marconi , Alessia Garofalo

An accurate model of the point spread function is required in order to estimate positions and brightnesses of stars in digitized images. The PSF of the Gaia space telescope is unusual due to the use of drift-scan mode and time-delayed…

Instrumentation and Methods for Astrophysics · Physics 2026-04-08 Nicholas Rowell , Michael Davidson , Nigel C. Hambly , Lennart Lindegren , Javier Castañeda , Claus Fabricius , Jose Hernández , Dafydd W. Evans

The goal of this paper is to demonstrate the outstanding quality of the second data release of the Gaia mission and its power for constraining many different aspects of the dynamics of the satellites of the Milky Way. We focus here on…

Using the light curve time series data for more than 11.7 million variable sources published in the Gaia Data Release 3, the average magnitudes, colors, and variability parameters have been computed for 0.836 million Gaia CRF objects, which…

Astrophysics of Galaxies · Physics 2024-09-02 Valeri V. Makarov

The Gaia satellite will observe the positions and velocities of over a billion Milky Way stars. In the early data releases, the majority of observed stars do not have complete 6D phase-space information. In this Letter, we demonstrate the…

Astrophysics of Galaxies · Physics 2021-07-08 Adriana Dropulic , Bryan Ostdiek , Laura J. Chang , Hongwan Liu , Timothy Cohen , Mariangela Lisanti

Scope of this contribution is twofold. First, it describes the potential of the global astrometry mission Gaia for detecting and measuring planetary systems based on detailed double-blind mode simulations and on the most recent predictions…

Earth and Planetary Astrophysics · Physics 2010-03-23 M. G. Lattanzi , A. Sozzetti

In 2002, the UCR time series classification archive was first released with sixteen datasets. It gradually expanded, until 2015 when it increased in size from 45 datasets to 85 datasets. In October 2018 more datasets were added, bringing…

Machine Learning · Computer Science 2018-11-02 Anthony Bagnall , Hoang Anh Dau , Jason Lines , Michael Flynn , James Large , Aaron Bostrom , Paul Southam , Eamonn Keogh

Major advancements in space science and detector technology brought about a revolution in global astrometry, the science of measuring distances and motions of stars in the Milky Way and in the local universe. From the first ESA astrometric…

Instrumentation and Methods for Astrophysics · Physics 2025-04-01 Beatrice Bucciarelli

In June 2022, the Gaia mission released a catalog of astrometric orbital solutions for 168,065 binary systems, by far the largest such catalog to date. The catalog's selection function is difficult to characterize because of choices made in…

Solar and Stellar Astrophysics · Physics 2025-05-14 Casey Y. Lam , Kareem El-Badry , Joshua D. Simon

Context. Cepheids are pulsating stars that play a crucial role in several astrophysical contexts. Among the different types, the Classical Cepheids are fundamental tools for the calibration of the extragalactic distance ladder. They are…

Context: One of the rarest types of variability is the phenomenon of gravitational microlensing, a transient brightening of a background star due to an intervening lensing object. Microlensing is a powerful tool in studying the invisible or…

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