Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.9202g&link_type=abstract
American Astronomical Society, 197th AAS Meeting, #92.02; Bulletin of the American Astronomical Society, Vol. 32, p.1565
Astronomy and Astrophysics
Astronomy
Scientific paper
We present photoionization modeling results for the LINER/H II region transition nucleus NGC 4569. Its nuclear UV emission is clearly dominated by a compact, young stellar population (Maoz et al. 1998; Barth et al. 1998) and there are no signatures of an AGN in the multi-wavelength data of NGC 4569. Thus, NGC 4569 is an ideal object for testing a possible link between stellar photoionization and nuclear emission line regions characterized by low ionization. This analysis builds on the photoionization results for NGC 4569 presented by Barth & Shields (2000). We derive rigid constraints on the photoionizing emission through spectral population synthesis of the nuclear starburst, as well as by placing an observationally derived limit on the contribution from hot Wolf-Rayet stars. Additional constraints for our photoionization analysis are obtained from published imagery and spectral data. We find that very specific nuclear conditions are required if stellar photoionization is the sole ionization mechanism. Specifically, at least two spatially distinct emission line components are needed, an inner core of emission coincinding with the compact starburst, as well as an extended component. Furthermore, a separate high denisty component is required to reproduce the strength of the [O I] λ 6300 emission. We offer a physical interpretation for these results in terms of an evolving starburst.
Bruhweiler Fred C.
Gabel Jack R.
No associations
LandOfFree
Stellar Photoionization Models of the Low Ionization Emission Region in the Nucleus of NGC 4569 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Stellar Photoionization Models of the Low Ionization Emission Region in the Nucleus of NGC 4569, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stellar Photoionization Models of the Low Ionization Emission Region in the Nucleus of NGC 4569 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1727335