Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Determination of star formation histories from gaia-type photometric and astrometric survey data

In English

Författare

Summary, in English

To understand the evolution of the Milky Way Galaxy requires detailed knowledge of the star formation history of various populations. The vast amounts of photometric and astrometric data provided by the Gaia mission give unprecedented opportunities in this area. The relationships between the observed data and the ages of stars are however complex and highly non-linear and great care must be taken in analyzing the data. We describe a Bayesian approach to calculate the star formation rate (SFR) from astrophysical data, using a genetic algorithm to solve the basic integral equation. We present simulations showing that the method is capable of resolving structures in the SFR that cannot be seen from a distribution of the individually estimated stellar ages.

Publiceringsår

2005

Språk

Engelska

Sidor

171-173

Publikation/Tidskrift/Serie

European Space Agency, (Special Publication) ESA SP

Volym

576

Dokumenttyp

Konferensbidrag

Förlag

European Space Agency

Ämne

  • Astronomy, Astrophysics and Cosmology

Nyckelord

  • Evolution
  • Populations
  • Galaxy
  • Stellar ages

Conference name

Symposium - The Three-Dimensional Universe with Gaia

Conference date

2004-10-04 - 2004-10-07

Conference place

Paris, France

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0379-6566
  • ISSN: 1609-042X