Nuclear star formation in the quasar PG1126-041 from adaptive optics assisted spectroscopy

Details Nuclear star formation in the quasar PG1126-041 from adaptive optics assisted spectroscopy Nuclear star formation in the quasar PG1126-041 from adaptive optics assisted spectroscopy

2004-07-05

arxiv.org/abs/astro-ph/0407077v1

Astron.Astrophys. 423 (2004) L13-L16

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures. Accepted for publication in A&A

Scientific paper

10.1051/0004-6361:200400020

We present adaptive optics assisted spectroscopy of three quasars obtained with NACO at VLT. The high angular resolution achieved with the adaptive optics (~0.08"), 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 Pa-alpha emission within the nuclear 100 pc. The comparison with higher excitation lines suggests that the narrow Pa-alpha emission is due to nuclear star formation. The inferred intensity of the nuclear star formation (13 M(sun)/yr) may account for most of the far-IR luminosity observed in this quasar.

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