| Issue |
EAS Publications Series
Volume 60, 2013
Betelgeuse Workshop 2012 The Physics of Red Supergiants: Recent Advances and Open Questions
|
|
|---|---|---|
| Page(s) | 293 - 297 | |
| Section | Red Supergiants in Galaxies | |
| DOI | https://doi.org/10.1051/eas/1360034 | |
| Published online | 23 May 2013 | |
P. Kervella, T. Le Bertre and G. Perrin (eds)
EAS Publications Series, 60 (2013) 293-297
A large population of red supergiants in the super star cluster NGC 1705-1
1
LUPM–UMR 5299, CNRS & Université Montpellier
II, Place Eugène
Bataillon, 34095
Montpellier Cedex 05,
France
2
Max-Planck-Institute for extraterrestrial Physics, PO Box 1312,
Giessenbachstr.,
85741
Garching,
Germany
We present near-infrared integral field observations of the super star cluster in the amorphous galaxy NGC1705. Data have been collected with SINFONI mounted on the VLT. Adaptive optics was used under good seeing conditions. Mosaics of the cluster and its immediate surrounding have been constructed. The cluster is not spatially resolved. Its radius is smaller than 2.85 ± 0.50pc. The K-band spectrum of the cluster is dominated by strong CO absorption bandheads. It is typical of a Galactic K 4–5 supergiant. Its age is estimated to be 12 ± 6Myr. The large error bar is rooted in the uncertainties of the input physics and ingredients of different evolutionary models.
© EAS, EDP Sciences 2013