Narrow Line Region Geometry Modeling of Markarian 573

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Date/Time:Friday, 09 Nov 2012 from 4:10 pm to 5:00 pm
Location:Room 3
Contact:Massimo Marengo
Phone:515-294-2958
Channel:Astronomy
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Seminar by Brandon Marshall, ISU Astronomy Graduate Student

I will present a paper by Fischer et al. 2010 which looks at the narrow line region of the Seyfert 2 galaxy Mrk 573 using Hubble Space Telescope WFPC2 and STIS observations. Using this data they are able to create kinematic and geometric models that fit their observations. They propose that Mrk 573 may be a candidate for a leading spiral structure to explain inconsistencies between their kinematic data and structure map observations. This being a rare case, further observations would be best to clarify the large rotational structure. They find an Narrow Line Region opening angle much larger than the apparent angle seen in structure mapping which is attributed to intersections with an inner dust/gas disk. It is also suggested that intersections with these inner disks may be applicable to other Seyfert galaxies as well.