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Evidence for a Starburst within 9 pc 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
; | | Date: |
28 Mar 2005 | | Journal: | Astrophys.J. 624 (2005) L13-L16 | | Subject: | astro-ph | | Affiliation: | IF-UFRGS, Brazil), M. Eracleous (Penn State), A. S. Wilson (UMD), A. V. Filippenko (UC Berkeley) and M. Livio (STScI | | Abstract: | We report evidence for 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 HST spectrum. The burst is a few times 10^6 yr old, has a mass of approximately 10^6 solar masses, an observed luminosity of 1.5 x 10^7 solar luminosities and is obscured by approximately 3 visual magnitudes. The importance of this finding is two-fold: (1) the proximity of the starburst to the active nucleus and thus possible association with it; (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. | | Source: | arXiv, astro-ph/0503590 | | Services: | Forum | Review | PDF | Favorites | |
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