CfA OIR Division Lunch Talks

May 27, 1999 Pratt Conference Room, 12:30 pm


The Stellar Content of the Hamburg/ESO Objective Prism Survey

Norbert Christlieb, Hamburger Sternwarte, Germany

Abstract

The Hamburg/ESO objective prism survey is a wide-angle (10,000 square degrees), digital survey at high galactic lattitudes (|b| > 30 deg), which is mainly aimed at finding bright (12.0 < B_J < 17.5) quasars. Our data-base of several million digital, low-resolution (15 A at H-gamma) spectra allows not only a very efficient and automatic selection of quasar candidates, but enables us also to exploit its stellar content systematically, e.g. carbon stars, very metal-poor stars, hot and cool white dwars, cataclysmic variables, and many more.

In my talk I will give an overview of the stellar projects carried out in the course of the survey, and I will discuss the various candidate selection techniques which are involved; e.g. automatic classification, selection in multi-dimensional parameter space based on emission or absorption line detections, or "simple" colour selection.