OASIS high-resolution integral field spectroscopy of the SAURON ellipticals and lenticulars

R. McDermid*, E. Emsellem, M. Cappellari, H. Kuntschner, R. Bacon, M. Bureau, Y. Copin, R. L. Davies, J. Falcón-Barroso, P. Ferruit, D. Krajnovic, R. F. Peletier, K. Shapiro, F. Wernli, P. T. De Zeeuw

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We present a summary of high-spatial resolution follow-up observations of the elliptical (E) and lenticular (SO) galaxies in the SAURON survey using the OASIS integral field spectrograph. The OASIS observations explore the central 8″ × 10″ regions of these galaxies using a spatial sampling four times higher than SAURON, often revealing previously undiscovered features. Around 75% (31/48) of the SAURON E/S0s with central velocity dispersion ≲ 120 km s-1 were observed with OASIS, covering well the original SAURON representative sample. We present here an overview of this follow-up survey, and some preliminary results on individual objects, including a previously unreported counter-rotating core in NGC4382; the decoupled stellar and gas velocity fields of NGC 2768; and the strong age gradient towards the centre of NGC 3489.

Original languageEnglish
Pages (from-to)100-103
Number of pages4
JournalAstronomische Nachrichten
Volume325
Issue number2
DOIs
Publication statusPublished - 2004
Externally publishedYes

Keywords

  • Galaxies: elliptical and lenticular
  • Galaxies: individual (NGC 2768, NGC 3489, NGC 4382)
  • Galaxies: kinematics and dynamics
  • Galaxies: stellar content

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