English
Related papers

Related papers: Stellar Populations

200 papers

We show observations obtained with the integral field spectrometer OASIS for the central regions of a sample of barred galaxies. The high spatial resolution of the instrument allows to distinguish various structures within these regions as…

Astrophysics · Physics 2009-11-13 Mercedes Mollá , Simon Cantin , Carmelle Robert , Anne Pellerin

Gaia will identify several 1e5 white dwarfs, most of which will be in the solar neighborhood at distances of a few hundred parsecs. Ground-based optical follow-up spectroscopy of this sample of stellar remnants is essential to unlock the…

In this review I first summarize why binaries are key objects in the study of stellar populations, key objects to understand the evolution of star clusters, key objects to understand galaxies and thus the universe. I then focus on 4…

Solar and Stellar Astrophysics · Physics 2009-09-21 Dany Vanbeveren

We developed an iterative technique to better characterize stellar populations and the central activity of barred galaxies using evolutionary synthesis codes and OASIS data. The case of NGC5430 is presented here. Our results are reinforcing…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 C. Robert , S. Cantin , M. Mollá , A. Pellerin , É. Brière

The age and chemical composition of the stars in present-day galaxies carry important clues about their star formation processes. The latest generation of population synthesis models have allowed to derive age and stellar metallicity…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Anna Gallazzi

In this introductory talk we will establish connections between the statistical analysis of galaxy clustering in cosmology and recent work in mainstream spatial statistics. The lecture will review the methods of spatial statistics used by…

Astrophysics · Physics 2007-05-23 Vicent J. Martinez , Enn Saar

Understanding the star-formation properties of galaxies as a function of cosmic epoch is a critical exercise in studies of galaxy evolution. Traditionally, stellar population synthesis models have been used to obtain best fit parameters…

Astrophysics of Galaxies · Physics 2020-03-04 Shraddha Surana , Yogesh Wadadekar , Omkar Bait , Hrushikesh Bhosle

Nearly a century after the true nature of galaxies as distant "island universes" was established, their origin and evolution remain great unsolved problems of modern astrophysics. One of the most promising ways to investigate galaxy…

Astrophysics · Physics 2015-06-24 Michael J. West , Patrick Cote , Ronald O. Marzke , Andres Jordan

Galaxies represent the visible fabric of the Universe and there has been considerable progress recently in both observational and theoretical studies. The underlying goal is to understand the present-day diversity of galaxy forms, masses…

Astrophysics · Physics 2007-05-23 Richard Ellis

We perform a comprehensive study of the stellar population properties of quiescent galaxies as a function of size and stellar mass to constrain the physical mechanism governing the stellar mass assembly and the likely evolutive scenarios…

(Abridged) We analyze photometry and spectroscopy of a sample of 63 clusters at 0.3<z<0.9 drawn from the Las Campanas Distant Cluster Survey to empirically constrain models of cluster galaxy evolution. Specifically, by combining data on our…

Astrophysics · Physics 2009-11-07 Amy E. Nelson , Anthony H. Gonzalez , Dennis Zaritsky , Julianne J. Dalcanton

Connecting star and planet properties in a single model is not straightforward. Stellar population synthesis models are key to explore combined statistical constraints from stars and planets observations. The Besan\c{c}on stellar population…

Earth and Planetary Astrophysics · Physics 2019-02-21 Cabral Nahuel , Nadège Lagarde , Céline Reylé , Aurélie Guilbert-Lepoutre , Annie C. Robin

We review recent work that investigates the formation of stellar clusters, ranging in scale from globular clusters through open clusters to the small scale aggregates of stars observed in T associations. In all cases, recent advances in…

Astrophysics · Physics 2007-05-23 Cathie J. Clarke , Ian A. Bonnell , Lynne A. Hillenbrand

This thesis work represents the first efforts to combine population synthesis studies of the Galactic isolated neutron stars with deep-learning techniques with the aim of better understanding neutron-star birth properties and evolution. In…

High Energy Astrophysical Phenomena · Physics 2024-04-25 Michele Ronchi

Libraries of stellar spectra are fundamental tools in the study of stellar populations and in automatic determination of atmospheric parameters for large samples of observed stars. In the context of the present volume, here I give an…

Solar and Stellar Astrophysics · Physics 2009-06-08 Paula Coelho

In this chapter I give an overall description of the structure and evolution of stars of different masses, and review the main ingredients included in state-of-the-art calculations aiming at reproducing observational features. I give…

Solar and Stellar Astrophysics · Physics 2017-12-27 Víctor Silva Aguirre

This is a brief overview of the elemental abundance patterns that have been observed in the different Galactic stellar populations. Main focus is on studies that are based on high-resolution spectra of dwarf and subgiant stars, and in some…

Astrophysics of Galaxies · Physics 2013-12-18 Thomas Bensby

Star formation plays a central role in the evolution of galaxies and of the Universe as a whole. Studies of star-forming regions in the local universe have shown that star formation typically occurs in a clustered fashion. Building a…

We describe a first attempt to apply adaptive optics to the study of resolved stellar populations in galaxies. Advantages over traditional approaches are (i) improved spatial resolution and point-source sensitivity through adaptive optics,…

Astrophysics · Physics 2007-05-23 T. R. Bedding , D. Minniti , F. Courbin , B. Sams

Our vision of galaxies has changed significantly since the era of large galaxy surveys like the Sloan, which gave us extensive statistics with millions of galaxies. The Hubble sequence classification described in Chapter 1 still remains…

Astrophysics of Galaxies · Physics 2023-02-28 Francoise Combes
‹ Prev 1 8 9 10 Next ›