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Related papers: Dynamical and chemical evolution of the thin disc

200 papers

We explore the linear stability of astrophysical discs exhibiting vertical shear, which arises when there is a radial variation in the temperature or entropy. Such discs are subject to a "vertical-shear instability", which recent nonlinear…

Solar and Stellar Astrophysics · Physics 2015-06-24 Adrian J. Barker , Henrik N. Latter

We used the spectroscopic and astrometric data provided from the GALAH DR2 and Gaia DR2, respectively, for a large sample of stars to investigate the behaviour of the [$\alpha$/Fe] abundances via two procedures, i.e. kinematically and…

Astrophysics of Galaxies · Physics 2019-11-13 S. Karaali , S. Bilir , E. Yaz Gokce , O. Plevne

We investigate the formation history of the stellar disk component in the Milky Way (MW) based on our new chemical evolution model. Our model considers several fundamental baryonic processes, including gas infall, re-accretion of outflowing…

Astrophysics of Galaxies · Physics 2018-03-28 Daisuke Toyouchi , Masashi Chiba

The distribution of chemical elements in the Galactic disc can reveal fundamental clues on the physical processes that led to the current configuration of our Galaxy. We map chemical azimuthal variations in the disc using individual stellar…

Astrophysics of Galaxies · Physics 2024-12-25 M. Barbillon , A. Recio-Blanco , E. Poggio , P. A. Palicio , E. Spitoni , P. de Laverny , G. Cescutti

(Abridged) Recent spectroscopic surveys have begun to explore the Galactic disk system outside the solar neighborhood on the basis of large data samples. In this way, they provide valuable information for testing spatial and temporal…

Velocity dispersion ($\sigma$) is a key driver for galaxy structure and evolution. We here present a comprehensive semi-empirical approach to compute $\sigma$ via detailed Jeans modelling assuming both a constant and scale-dependent…

Astrophysics of Galaxies · Physics 2022-01-05 Christopher Marsden , Francesco Shankar , Mariangela Bernardi , Ravi Sheth , Hao Fu , Andrea Lapi

We analyse for the first time the radial abundance gradients of the disc stars of a disc galaxy simulated with our three dimensional, fully cosmological chemodynamical galaxy evolution code GCD+. We study how [Fe/H], [N/O], [O/Fe], [Mg/Fe]…

Astrophysics of Galaxies · Physics 2015-05-27 Awat Rahimi , Daisuke Kawata , Carlos Allende Prieto , Chris B. Brook , Brad K. Gibson , Alina Kiessling

We aim to understand the accretion history of the Milky Way by exploring the vertical and radial properties of the Galactic thick disc. We study the chemical and kinematic properties of roughly a thousand spectra of faint magnitude…

[Abridge] In the first paper of this series (paper I) we presented a new approach for studying the chemo-odynamical evolution in disk galaxies, focusing on the Milky Way. Here we extend these results to different distances from the Galactic…

Astrophysics of Galaxies · Physics 2014-12-03 Ivan Minchev , Cristina Chiappini , Marie Martig

Planets and their atmospheres are built from gas and solid material in protoplanetary disks. Recent results suggest that solid material like pebbles may contribute significantly to building up planetary atmospheres. In order to link…

Earth and Planetary Astrophysics · Physics 2022-12-14 Christian Eistrup , Thomas Henning

Understanding the Milky Way disc formation requires characterising its structural and kinematic properties as functions of stellar age. Using red giant stars from APOGEE DR17 and Gaia DR3, we model the age-dependent stellar kinematics with…

Astrophysics of Galaxies · Physics 2025-09-30 Natsuki Funakoshi , Daisuke Kawata , Jason L. Sanders , Ioana Ciucă , Robert J. J. Grand , HanYuan Zhāng

A comparison is made between the age-metallicity relation obtained from four different types of studies: F and G stars in the Solar Neighbourhood, analysis of open clusters, galactic structure studies with the stellar population synthesis…

Astrophysics · Physics 2009-10-30 G. Carraro , Y. K. Ng , L. Portinari

A correlation between proto-planetary disc radii and sub-mm fluxes has been recently reported. In this Letter we show that the correlation is a sensitive probe of grain growth processes. Using models of grain growth and drift, we have shown…

Earth and Planetary Astrophysics · Physics 2019-05-08 Giovanni P. Rosotti , Richard A. Booth , Marco Tazzari , Cathie Clarke , Giuseppe Lodato , Leonardo Testi

Context. Protoplanetary discs are the birthplaces of planets. Recent studies highlight the role of stellar mass sampling in determining disc lifetimes from the observed fraction of stars with discs. Low-mass stars tend to host longer-lived…

Earth and Planetary Astrophysics · Physics 2025-10-09 Jose L. Gomez , Octavio M. Guilera , Marcelo M. Miller Bertolami , Elisa Castro-Martínez , María Paula Ronco

How substructures and disk properties affect dust evolution and the delivery of solids and volatiles into planet-forming regions remains an open question. We present results from tailored dust evolution modeling of the AGE-PRO ALMA large…

The study of protoplanetary disc evolution and planet formation has mainly concentrated on solar (and low) mass stars since they host the majority of the confirmed exoplanets. Nevertheless, the numerous planets found orbiting stars up to…

Earth and Planetary Astrophysics · Physics 2023-11-08 María Paula Ronco , Matthias R. Schreiber , Eva Villaver , Octavio M. Guilera , Marcelo M. Miller Bertolami

We used an N-body smoothed particle hydrodynamics algorithm, with a detailed treatment of star formation, supernovae feedback, and chemical enrichment, to perform eight simulations of mergers between gas-rich disc galaxies. We vary the mass…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Simon Richard , Chris B. Brook , Hugo Martel , Daisuke Kawata , Brad K. Gibson , Patricia Sanchez-Blazquez

We study the evolution and final dispersal of protoplanetary discs that evolve under the action of internal and external photoevaporation, and different degrees of viscous transport. We identify five distinct dispersal pathways, which are…

Earth and Planetary Astrophysics · Physics 2022-06-08 Gavin A. L. Coleman , Thomas J. Haworth

Chemical abundances are an essential tool in untangling the Milky Way's enrichment history. However, the evolution of the interstellar medium abundance gradient with cosmic time is lost as a result of radial mixing processes. For the first…

Recent observations have uncovered a correlation between the accretion rates (measured from the UV continuum excess) of protoplanetary discs and their masses inferred from observations of the sub-mm continuum. While viscous evolution models…

Earth and Planetary Astrophysics · Physics 2020-09-30 Andrew D. Sellek , Richard A. Booth , Cathie J. Clarke