Missing Galactic PNe: [S III] Imaging Survey

Details Missing Galactic PNe: [S III] Imaging Survey Missing Galactic PNe: [S III] Imaging Survey

2006-05-22

arxiv.org/abs/astro-ph/0605545v1

Astronomy and Astrophysics

Astrophysics

2 pages, 2 figures, to be published in Proc. IAU Symp. 234, Planetary Nebulae in our Galaxy and Beyond (3-7 April 2006), eds.

Scientific paper

10.1017/S174392130600398X

The total number of Galactic planetary nebulae is highly uncertain; the most inclusive current catalog contains only ~ 1,500. We will use the PRISM wide-field imager on the 1.83 m Perkins Telescope to conduct a pilot survey of the Galactic plane in search of [S III] emission from planetary nebulae obscured by dust and missed by surveys of H-alpha. We are employing the method of Jacoby & Van de Steene, who surveyed the bulge for 9532 Angstrom [S III] emission. In addition to seeing through more of the extinction, use of the [S III] emission line will a priori reject the most troublesome catalog contaminants: ultracompact H II regions.

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