Measuring the total opacity of M31 and the Magellanic Clouds with very large space telescopes

Details Measuring the total opacity of M31 and the Magellanic Clouds with very large space telescopes Measuring the total opacity of M31 and the Magellanic Clouds with very large space telescopes

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.0817g&link_type=abstract

American Astronomical Society Meeting 204, #08.17; Bulletin of the American Astronomical Society, Vol. 36, p.982

Astronomy and Astrophysics

Astronomy

Scientific paper

Recently, we have developed and calibrated the Synthetic Field Method (SFM) to derive the total extinction through disk galaxies. The method is based on the number counts and colors of distant background field galaxies that can be seen through the foreground object; it is the only method capable of determining total extinction without a priori assumptions about the dust properties, its spatial distribution, or the geometry of the background objects. Here, we investigate how a 20 to 30-m, diffraction- limited, optical telescope in space would improve the determination of opacities with the SFM in Local Group objects.

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