Kinematics of the ionised gas in the spiral galaxy NGC 2403

F Fraternali*, T Oosterloo, R Sancisi

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

39 Citations (Scopus)

Abstract

We present a study of the kinematics of the ionised gas in the nearby spiral galaxy NGC 2403 using deep long-slit spectra obtained with the 4.2-m William Herschel Telescope. The data show the presence of a halo component of ionised gas that is rotating more slowly than the gas in the disk. The kinematics of this ionised halo gas is similar to that of the neutral halo gas. On small scales. broad line profiles (up to 300 km s(-1) wide) indicate regions of fast Outflows of ionised gas. We discuss these new results in the context of galactic fountain models.

Original languageEnglish
Pages (from-to)485-495
Number of pages11
JournalAstronomy & astrophysics
Volume424
Issue number2
DOIs
Publication statusPublished - Sep-2004

Keywords

  • galaxies : individual : NGC 2403
  • galaxies : structure
  • galaxies : kinematics and dynamics
  • galaxies : halos
  • ISM : kinematics and dynamics
  • HIGH-VELOCITY CLOUDS
  • EDGE-ON GALAXIES
  • INTERSTELLAR-MEDIUM
  • SUPERNOVA-REMNANTS
  • NGC 2403
  • HI
  • EMISSION
  • HYDROGEN
  • HALO
  • IONIZATION

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