Narrow-Line Seyfert 1s and SDSS: What Can We Learn?

Details Narrow-Line Seyfert 1s and SDSS: What Can We Learn? Narrow-Line Seyfert 1s and SDSS: What Can We Learn?

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aspc..311..257p&link_type=abstract

AGN Physics with the Sloan Digital Sky Survey, Proceedings of a conference held in Princeton, NJ, USA, 27-31 July 2003, Edited b

Physics

Scientific paper

Narrow-Line Seyfert 1 Galaxies (NLS1s), at first a rare subclass of Seyfert galaxies, are now recognized to have extreme properties at visible and X-ray wavelengths that make them important for understanding the AGN phenomenon. Heretofore, however, most NLS1s have been heterogeneously selected, or found to be NLS1s after discovery as ultrasoft X-ray sources. The SDSS offers a unique opportunity to create a definitive and homogeneous sample of optically-selected NLS1s. I will briefly review the relevant physical properties of NLS1s and describe what we learned from 150 NLS1s found in the SDSS EDR, and followup work that would be enabled by the full SDSS.

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