Evidence of a starburst within 9 parsecs of the active nucleus of NGC 1097

T. Storchi-Bergmann, R. S. Nemmen, P. F. Spinelli, M. Eracleous, A. S. Wilson, A. V. Filippenko, M. Livio

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We report evidence of a recent burst of star formation located within 9 pc of the active nucleus of NGC 1097. The observational signatures of the starburst include UV absorption lines and continuum emission from young stars observed in a small-aperture Hubble Space Telescope spectrum. The burst is ≤ a few × 106 yr old, has a mass of ∼106 M , an observed luminosity of 1.5 × 107 L , and is obscured by Av ≈ 3 mag. The importance of this finding is twofold: (1) the proximity of the starburst to the active nucleus and thus its possible association with it, and (2) its obscuration by and apparent association with a dusty absorbing medium, while the broad emission lines appear unobscured, suggesting that the starburst could be embedded in a circumnuclear torus as predicted in the unified model of active galactic nuclei.

Original languageEnglish (US)
Pages (from-to)L13-L16
JournalAstrophysical Journal
Issue number1 II
StatePublished - May 1 2005

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


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