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| Paper: |
A new technique for determining extragalactic distances |
| Volume: |
4, The Extragalactic Distance Scale: Proceedings of the ASP 100th Anniversary Symposium |
| Page: |
213 |
| Authors: |
Tonry, John L.; Luppino, Gerard A.; Schneider, Donald P. |
| Abstract: |
A relatively direct technique of determining extragalactic distances is described that can determine accurate distances of elliptical galaxies and spiral bulges out to about 20 Mpc. The method relies on measuring the luminosity fluctuations that arise from the counting statistics of the stars contributing the flux in each pixel of a high signal-to-noise CCD image of a galaxy. The amplitude of these fuctuations is inversely proportional to the distance of the galaxy. This approach bypasses most of the successive stages of calibration required in the traditional extragalactic distance ladder; the only serious drawback to this method is that it requires an accurate knowledge of the bright end of the luminosity function. |
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