University of Hertfordshire

From the same journal

From the same journal

Comparisons of images derived from independent Zeeman Doppler imaging codes

Research output: Contribution to journalArticle

  • G A J Hussain
  • J F Donati
  • A Collier Cameron
  • J R Barnes
View graph of relations
Original languageEnglish
Pages (from-to)961-973
Number of pages13
JournalMonthly Notices of the Royal Astronomical Society
Volume318
Issue4
DOIs
Publication statusPublished - 11 Nov 2000

Abstract

We compare surface brightness and magnetic field surface maps for the K0 dwarf AB Doradus, obtained using two independently developed Zeeman Doppler imaging codes. We find that even the fine structure in the two sets of images shows excellent agreement. Magnetic field maps appear to be less sensitive to line-modelling effects than brightness maps. We argue that these results point to the consistency and reliability of Doppler imaging techniques even when using poorly sampled data sets, provided that the spectra used are of sufficiently high signal-to-noise ratio.

ID: 493440