Show that if two stars of the same luminosity form a

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Unformatted text preview: else could change the star’s position on the sky relative to much more distant objects? 8. Show that, if two stars of the same luminosity form a close binary pair, the apparent magnitude of the pair measured together is about 0.75 magnitudes brighter than either star individually. 1 Technically, these are the distance and velocity of the Local Standard of Rest (LSR) which is supposed to represent the average motion of material in the solar neighborhood around the Galactic Center. – Page 2 of 3 – 9. (Extra Credit) In 1987, Greg Bothun and collaborators (Bothun, G. et al. 1987, AJ, 94, 23) announced the discovery of the first of a new class of object, the low surface brightness galaxy Malin 1. This galaxy appears a ‘smudge’ about 15” across to the Hubble Space Telescope, with deep images revealing an extremely low surface brightness disk. It turns out when you integrate across the entire image of Malin 1, it has an apparent V magnitude of 15.5 which should make it easily visible t...
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This document was uploaded on 03/04/2014 for the course ASTROPHYS 362 at Minnesota State University Moorhead .

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