What Can the Occult do for you?: Starlight Attenuation & Reddening Survey of Multiple Occulting Galaxies (STARSMOG)

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dc.contributor.authorHolwerda, B. W.
dc.contributor.authorKeel, W. C.
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2018-09-25T20:19:37Z
dc.date.available2018-09-25T20:19:37Z
dc.date.issued2015-08
dc.description.abstractInterstellar dust is still the dominant uncertainty in Astronomy, limiting precision in e.g., cosmological distance estimates and models of how light is re-processed within a galaxy. When a foreground galaxy serendipitously overlaps a more distant one, the latter backlights the dusty structures in the nearer foreground galaxy. Such an overlapping or occulting galaxy pair can be used to measure the distribution of dust in the closest galaxy with great accuracy. The STARSMOG program uses HST observation of occulting galaxy pairs to accurately map the distribution of dust in foreground galaxies in fine (<100 pc) detail. Furthermore, Integral Field Unit observations of such pairs will map the effective extinction curve in these occulting galaxies, disentangling the role of fine-scale geometry and grain composition on the path of light through a galaxy. The overlapping galaxy technique promises to deliver a clear understanding of the dust in galaxies: the dust geometry, a probability function of the amount of dimming as a function of galaxy type, its dependence on wavelength, and evolution of all these properties with cosmic time using distant, high-redshift pairs. © International Astronomical Union 2016.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationHolwerda, B., Keel, W. (2015): What Can the Occult do for you? Starlight Attenuation & Reddening Survey of Multiple Occulting Galaxies (STARSMOG). Proceedings of the International Astronomical Union, vol. 11. DOI: 10.1017/S1743921316004762
dc.identifier.doi10.1017/S1743921316004762
dc.identifier.urihttp://ir.ua.edu/handle/123456789/3963
dc.subjectDust
dc.subjectGalaxies
dc.subjectOcculting Galaxies
dc.subjectDistance Measurements
dc.subjectStellar Populations
dc.titleWhat Can the Occult do for you?: Starlight Attenuation & Reddening Survey of Multiple Occulting Galaxies (STARSMOG)en_US
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