Statistics
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96..807t&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 96, Sept. 1988, p. 807-815.
Statistics
269
Distance, Elliptical Galaxies, Globular Clusters, Spiral Galaxies, Charge Coupled Devices, Data Processing, Fourier Transformation, Power Spectra, Signal To Noise Ratios, Spatial Resolution
Scientific paper
A relatively direct technique of determining extragalactic distances is described. 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 fluctuations 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. Potentially, this method can produce accurate distances of elliptical galaxies and spiral bulges at distances out to about 20 Mpc. In this paper, it is explained how to calculate the value of the fluctuations, taking into account various sources of contamination and the effects of finite spatial resolution, and the feasibility and limitations of this technique are demonstrated via simulations and CCD images of M 32 and N 3379.
Schneider Donald P.
Tonry John
No associations
LandOfFree
A new technique for measuring extragalactic distances does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A new technique for measuring extragalactic distances, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new technique for measuring extragalactic distances will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-909178