Dust emission features in NGC 7023 between 0.35 and 2.5 microns: Extended red emission (0.7 microns) and two new emission features (1.15 and 1.5 microns)

We present 0.35-2.5 mum spectra of the south and northwest filaments in the reflection nebula NGC 7023. These spectra were used to test the theory of Seahra & Duley that carbon nanoparticles are responsible for extended red e mission (ERE). Our spectra fail to show their predicted second emission ban d at 1.0 mum even though both filaments exhibit strong emission in the fami liar 0.7 mum ERE band. The northwest filament spectrum does show one, and p ossibly two, new dust emission features in the near-infrared. We clearly de tect a strong emission band at 1.5 mum which we tentatively attribute to be ta -FeSi2 grains. We tentatively detect a weaker emission band at 1.15 mum which coincides with the location expected for transitions from the conduct ion band to midgap defect states of silicon nanoparticles. This is added ev idence that silicon nanoparticles are responsible for ERE as they already c an explain the observed behavior of the main visible ERE band.