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 language | English |
|---|---|
| Pages (from-to) | 100-103 |
| Number of pages | 4 |
| Journal | Astronomische Nachrichten |
| Volume | 325 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2004 |
| Externally published | Yes |
Keywords
- Galaxies: elliptical and lenticular
- Galaxies: individual (NGC 2768, NGC 3489, NGC 4382)
- Galaxies: kinematics and dynamics
- Galaxies: stellar content