| Issue |
A&A
Volume 534, October 2011
|
|
|---|---|---|
| Article Number | A70 | |
| Number of page(s) | 9 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361/201117399 | |
| Published online | 04 October 2011 | |
Integral field spectroscopy in the near infrared of NGC 3125-A and SBS 0335-052⋆
1
Department of Electrical Engineering and Center of Astro
EngineeringPontificia Universidad Catolica de Chile,
Av. Vicuña Mackenna 4860,
Santiago
Chile
e-mail: lvanzi@ing.puc.cl
2
INAF – Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5,
50125
Firenze,
Italy
3
Laboratoire AIM, CEA, Université Paris Diderot,
IRFU/Service d’Astrophysique, Bât.
709, 91191
Gif-sur-Yvette,
France
4
Steward Observatory, University of Arizona,
Tucson,
AZ
85721,
USA
Received: 2 June 2011
Accepted: 26 July 2011
We present integral field spectroscopy in the near infrared of the nearby dwarf starburst galaxy NGC 3125-A and of the low metallicity dwarf galaxy SBS 0335-052. The use of adaptive optics in the observations produces sub-arcsecond angular resolution. We pinpoint the star forming cores of both galaxies, identify relevant ISM components such as dust, photo ionized gas, shock excited gas and molecular gas. We relate these components to the large scale star formation process of the galaxies. In particular we find the emission of the near infrared lines of H2 and especially [FeII] does not coincide with the HII region in NGC 3125. We have the first clear detection of [FeII] in SBS 0335-052.
Key words: galaxies: dwarf / galaxies: individual: NGC 3125 / galaxies: individual: SBS 0335-052 / galaxies: starburst
© ESO, 2011
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