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Our understanding of how the Galaxy was formed and evolves is severely hampered by the lack of precise constraints on basic stellar properties such as distances, masses, and ages. Here, we show that solar-like pulsating red giants represent…

We live in an age where an enormous amount of astrometric, photometric, asteroseismic, and spectroscopic data of Milky Way stars are being acquired, many orders of magnitude larger than about a decade ago. Thanks to the Gaia astrometric…

Astrophysics of Galaxies · Physics 2018-06-13 Ivan Minchev

Knowledge of ages for stars formed over a galaxy's lifetime is fundamental to understand its formation and evolution. However, stellar ages are difficult to obtain since they cannot be measured from observations, being comparison with…

Astrophysics of Galaxies · Physics 2019-07-30 Carme Gallart , Edouard J. Bernard , Chris B. Brook , Tomas Ruiz-Lara , Santi Cassisi , Vanessa Hill , Matteo Monelli

The standard cosmological model ($\Lambda$-CDM) predicts that galaxies are built through hierarchical assembly on cosmological timescales$^{1,2}$. The Milky Way, like other disc galaxies, underwent violent mergers and accretion of small…

Galactic archaeology represents a multidisciplinary approach aimed at unraveling the intricate history of the Milky Way galaxy through the study of its stellar populations. This abstract delves into the significance of galactic archaeology…

Astrophysics of Galaxies · Physics 2023-08-17 J. Alfredo Collazos

The Milky Way has distinct structural stellar components linked to its formation and subsequent evolution, but disentangling them is nontrivial. With the recent availability of high-quality data for a large numbers of stars in the Milky…

Astrophysics of Galaxies · Physics 2023-07-05 Amalie Stokholm , Víctor Aguirre Børsen-Koch , Dennis Stello , Marc Hon , Claudia Reyes

We present a review of recent studies of the formation and evolution of the Milky Way galaxy, in particular based on large samples of non-kinematically selected stars with available proper motions. The Milky Way is argued to be a reasonable…

Astrophysics · Physics 2007-05-23 Timothy C. Beers , Masashi Chiba

Our Milky Way Galaxy is a typical large spiral galaxy, representative of the most common morphological type in the local Universe. We can determine the properties of individual stars in unusual detail, and use the characteristics of the…

Astrophysics · Physics 2007-05-23 Rosemary F. G. Wyse

[Abridged] We map the stellar age distribution ($\lesssim 1$ Gyr) across a 6kpc$\,\times\,$6kpc area of the Galactic disc to constrain our Galaxy's recent star-formation history. Our modelling draws on the sample of Zari et al. (2021) that…

Astrophysics of Galaxies · Physics 2022-12-21 E. Zari , N. Frankel , H. -W. Rix

We discuss recent observations of stars located close to the symmetry plane of the Milky Way, and examine them in the context of theories of Galaxy formation and evolution. The kinematics, ages, and compositions of thin disk stars in the…

Astrophysics of Galaxies · Physics 2015-05-14 Carlos Allende Prieto

The history of the formation and evolution of the Milky Way Galaxy is found in the spatial distribution, kinematics, age and chemical abundance distributions of long-lived stars. From this fossil record one can in principle extract the star…

Astrophysics · Physics 2016-08-30 Rosemary F. G. Wyse , Gerard Gilmore

Since chemical abundances are inherited between generations of stars, we use them to trace the evolutionary history of our Galaxy. We present a robust methodology for creating a phylogenetic tree, a biological tool used for centuries to…

Astrophysics of Galaxies · Physics 2021-01-20 Holly Jackson , Paula Jofre , Keaghan Yaxley , Payel Das , Danielle de Brito Silva , Robert Foley

We use a cosmological galactic evolutionary approach to model the Milky Way. A detailed treatment of the mass aggregation and dynamical history of the growing dark halo is included, together with a self consistent physical treatment for the…

Astrophysics · Physics 2009-11-06 X. Hernandez , V. Avila-Reese , C. Firmani

Quantification of the Galaxy's star formation history involves both the duration and the rate of formation, with these parameters being known with different precision for different populations. The early rate of star formation is knowable…

Astrophysics · Physics 2007-05-23 Gerry Gilmore

A suite of vast stellar surveys mapping the Milky Way, culminating in the Gaia mission, is revolutionizing the empirical information about the distribution and properties of stars in the Galactic stellar disk. We review and lay out what…

Astrophysics of Galaxies · Physics 2013-12-04 Hans-Walter Rix , Jo Bovy

With current space-based missions it is now possible to obtain age-sensitive asteroseismic information for tens of thousands of red giants. This provides a promising opportunity to study the Galactic structure and evolution. We use…

Astrophysics of Galaxies · Physics 2016-05-04 Sanjib Sharma , Dennis Stello , Joss Bland-Hawthorn , Daniel Huber , Timothy R. Bedding

With the start of the Gaia era, the time has come to address the major challenge of deriving the star formation history and evolution of the disk of our MilkyWay. Here we review our present knowledge of the outer regions of the Milky Way…

Astrophysics of Galaxies · Physics 2017-08-02 Francesca Figueras

Deciphering the assembly history of the Milky Way is a formidable task, which becomes possible only if one can produce high-resolution chrono-chemo-kinematical maps of the Galaxy. Data from large-scale astrometric and spectroscopic surveys…

Solar and Stellar Astrophysics · Physics 2017-09-06 A. Miglio , C. Chiappini , B. Mosser , G. R. Davies , K. Freeman , L. Girardi , P. Jofre , D. Kawata , B. M. Rendle , M. Valentini , L. Casagrande , W. J. Chaplin , G. Gilmore , K. Hawkins , B. Holl , T. Appourchaux , K. Belkacem , D. Bossini , K. Brogaard , M. -J. Goupil , J. Montalban , A. Noels , F. Anders , T. Rodrigues , G. Piotto , D. Pollacco , H. Rauer , C. Allende Prieto , P. P. Avelino , C. Babusiaux , C. Barban , B. Barbuy , S. Basu , F. Baudin , O. Benomar , O. Bienayme , J. Binney , J. Bland-Hawthorn , A. Bressan , C. Cacciari , T. L. Campante , S. Cassisi , J. Christensen-Dalsgaard , F. Combes , O. Creevey , M. S. Cunha , R. S. de Jong , P. de Laverny , S. Degl'Innocenti , S. Deheuvels , E. Depagne , J. DeRidder , P. DiMatteo , M. P. Di Mauro , M. -A. Dupret , P. Eggenberger , Y. Elsworth , B. Famaey , S. Feltzing , R. A. Garcia , O. Gerhard , B. K. Gibson , L. Gizon , M. Haywood , R. Handberg , U. Heiter , S. Hekker , D. Huber , R. Ibata , D. Katz , S. D. Kawaler , H. Kjeldsen , D. W. Kurtz , N. Lagarde , Y. Lebreton , M. N. Lund , S. R. Majewski , P. Marigo , M. Martig , S. Mathur , I. Minchev , T. Morel , S. Ortolani , M. H. Pinsonneault , B. Plez , P. G. Prada Moroni , D. Pricopi , A. Recio-Blanco , C. Reyle , A. Robin , I. W. Roxburgh , M. Salaris , B. X. Santiago , R. Schiavon , A. Serenelli , S. Sharma , V. Silva Aguirre , C. Soubiran , M. Steinmetz , D. Stello , K. G. Strassmeier , P. Ventura , R. Ventura , N. A. Walton , C. C. Worley

The star formation rate history of the Milky Way is derived using the chromospheric age distribution for 552 stars in the solar neighborhood. The stars sample birthsites distributed over a very large range of distances because of orbital…

Astrophysics · Physics 2009-10-31 Helio J. Rocha-Pinto , John Scalo , Walter Maciel , Chris Flynn

Investigations of the origin and evolution of the Milky Way disk have long relied on chemical and kinematic identification of its components to reconstruct our Galactic past. Difficulties in determining precise stellar ages have restricted…

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