The Optical and Infrared Emission from Seyfert Galaxies: Towards a comprehensive understanding

Details The Optical and Infrared Emission from Seyfert Galaxies: Towards a comprehensive understanding The Optical and Infrared Emission from Seyfert Galaxies: Towards a comprehensive understanding

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006noao.prop..386b&link_type=abstract

NOAO Proposal ID #2006A-0386

Computer Science

Scientific paper

We are conducting a comprehensive study of the thermal infrared emission from nearby active galaxies using the Spitzer Space Telescope. We propose to obtain optical spectra of our sample of Seyfert galaxies to maximize the return on the IR data. Our science goals are: (1) to determine accurate and uniform spectroscopic classifications using line ratio diagrams and Balmer line widths; (2) to derive ionizing photon luminosities from Balmer lines to constrain dust radiative transfer models; (3) to quantify the AGN and starburst contributions via line ratios and continuum decomposition; and (4) investigate relationships between the optical spectra and IR emission properties. A homogeneous set of optical spectra with wavelength coverage ~3600 - 7000 Å, and signal-to noise ratio ≳40 is essential to achieve our science goals and not available from existing sources. The proposed observations will produce a unique dataset that will be a legacy to the scientific community. Using the spectra in conjunction with our Spitzer data, we will address the outstanding issues of the nature of nuclear obscuration in AGN and the starburst/AGN connection.

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