Advertisement

Spatially-Resolved Internal Kinematics of 〈z〉 ≈ 0.3 Field Galaxies: Evidence for Rotation

  • P. Guhathakurta
  • K. Ing
  • H.-W. Rix
  • M. Colless
  • T. Williams
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 171)

Abstract

The nature of evolution in faint field galaxies remains a mystery. The Tully-Fisher relation, empirically relating the intrinsic luminosity of a spiral galaxy to its rotation speed, is an important tool for constraining the amount of luminosity evolution in distant field galaxies. Studying the luminosity-vs-linewidth relation for distant galaxies allows one to compare the luminosity of local and distant galaxies. The customary measure of a galaxy’s rotation speed is the width of an emission line. It is important, however, to test whether the linewidth is a reliable measure of the galaxy’s rotation speed or if it is dominated by turbulent motion within HII regions. In order to do this, we study the spatially-resolved kinematics and distribution of O[III] gas in about ten 〈B〉~21 field galaxies at 〈z〉≈0.3.

Copyright information

© Springer Science+Business Media Dordrecht 1996

Authors and Affiliations

  • P. Guhathakurta
    • 1
  • K. Ing
    • 1
  • H.-W. Rix
    • 2
  • M. Colless
    • 3
  • T. Williams
    • 4
  1. 1.UCO/Lick Obs.U. of Calif.Santa CruzUSA
  2. 2.Max-Planck-Inst. für AstrophysikGarchingGermany
  3. 3.Mt. Stromlo & Siding Springs Obs.CanberraAustralia
  4. 4.Rutgers UniversityPiscatawayUSA

Personalised recommendations