Poster abstract details

A catalogue of planetary nebula H$\alpha$ fluxes derived from the SHASSA and VTSS surveys.
Ivan Bojicic, David Frew, Quentin Parker

Abstract

We present a new set of integrated H$\alpha$ fluxes derived from the Southern H$\alpha$ Sky Survey Atlas (SHASSA) and the Virginia Tech Spectral-line Survey (VTSS) for over 1000 Galactic planetary nebulae (PNe). Aperture photometry on the digital images was performed to extract H$\alpha$+{[\rm N \sc ii]} fluxes. The {[\rm N \sc ii]} contribution was then deconvolved using literature data and new spectrophotometric data. This is the largest compilation of homogenously derived H$\alpha$ fluxes yet measured. Comparison with previous work shows that the flux scale has no significant zero-point error. Our new H$\alpha$ fluxes will be used to determine new Zanstra temperatures for those PNe with accurate central star photometry, to calculate surface-brightness distances for each PN, and determine new absolute PN magnitudes for delineating the faint end of the PN luminosity function.