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Sofia Feltzing

Professor

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An intermediate-band photometric study of the "globular cluster" NGC 2419

Författare

  • A. Koch
  • M. Frank
  • S. Feltzing
  • D. Adén
  • N. Kacharov
  • M. I. Wilkinson

Summary, in English

NGC 2419 is one of the remotest star clusters in the Milky Way halo and its exact nature is yet unclear. While it has traits reminiscent of a globular cluster, its large radius and suggestions of an abundance spread have fueled the discussion about its origin in an extragalactic environment, possibly the remnant of the accretion of a dwarf galaxy. Here, we present first results from deep intermediate-band photometry of NGC 2419, which enables us to search for chemical (light element) abundance variations, metallicity spreads, and thus multiple stellar populations through well calibrated Strömgren indices.

Avdelning/ar

  • Astronomi - Har omorganiserats

Publiceringsår

2013

Språk

Engelska

Sidor

67-70

Dokumenttyp

Konferens - annat

Ämne

  • Astronomy, Astrophysics and Cosmology

Nyckelord

  • Galaxies: photometry
  • Galaxy: halo
  • Globular clusters: general
  • Globular clusters: individual (NGC 2419)

Conference name

2012 Reading the Book of Globular Clusters with the Lens of Stellar Evolution

Conference date

2012-11-26 - 2012-11-28

Conference place

Monte Porzio Catone, Italy

Status

Published