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Total Opacity of Local Group Galaxies and Large Scale Structure behind the Galactic Bulge | | Rosa A. Gonzalez
; Benne Holwerda
; Laurent Loinard
; Ronald J. Allen
; Sebastien Muller
; | | Date: |
22 Jul 2004 | | Subject: | astro-ph | | Affiliation: | 2,3), Laurent Loinard , Ronald J. Allen and Sebastien Muller ( Centro de Radioastronomia y Astrofisica, UNAM, Morelia, Mexico, Space Telescope Science Institute, Baltimore, MD, USA, Kapteyn Institute, Groningen, The Netherlands, Academia Sinica I | | Abstract: | Recently, we have developed and calibrated the Synthetic Field Method to derive 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. Here, we investigate how large (10-m) and very large (20 to 30-m), diffraction-limited, optical and infrared telescopes in space would improve the detection of background galaxies behind Local Group objects, including the Galactic bulge. We find that, besides and perhaps more important than telescope size, a well-behaved, well-characterized PSF would facilitate in general the detection of faint objects in crowded fields, and greatly benefit several other important research areas, like the search for extrasolar planets, the study of quasar hosts and, most relevant for this meeting, the surveying of nearby large scale structure in the Zone of Avoidance, in particular behind the Galactic bulge. | | Source: | arXiv, astro-ph/0407467 | | Services: | Forum | Review | PDF | Favorites | |
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