| Issue |
A&A
Volume 423, Number 2, August IV 2004
|
|
|---|---|---|
| Page(s) | L13 - L16 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:200400020 | |
| Published online | 06 August 2004 | |
Letter to the Editor
Nuclear star formation in the quasar PG1126-041 from adaptive optics assisted spectroscopy*
1
Dip. di Astronomia – Università di Firenze, Largo E. Fermi 5, 50125 Firenze, Italy e-mail: gcresci@arcetri.astro.it
2
INAF – Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy
3
Istituto di Radioastronomia, sezione di Firenze, Largo E. Fermi 5, 50125 Firenze, Italy
4
INAF – Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35100 Padova, Italy
Received:
7
April
2004
Accepted:
1
July
2004
We present adaptive optics assisted spectroscopy of three quasars
obtained with NACO at VLT. The high angular resolution achieved with the
adaptive optics (
), joined to the diagnostic power of near-IR
spectroscopy,
allow us to investigate the properties of the innermost 100 pc of
these quasars.
In the quasar with the best adaptive optics correction, PG1126-041,
we spatially resolve the Paα emission within the
nuclear 100 pc. The comparison with higher excitation lines suggests that
the narrow Paα emission is due to nuclear star formation.
The inferred intensity of the nuclear star formation
(13 
)
may account for most of the far-IR luminosity observed in this quasar.
Key words: galaxies: active / galaxies: nuclei / quasars: emission lines / galaxies: starburst / techniques: high angular resolution / instrumentation: adaptive optics
© ESO, 2004
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