uxor presentation
TRANSCRIPT
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Uxors
Stars partially obscured by debris
cloudsAmanda Bacon and Connor McElravy
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Characteristics of Uxors: Mass
Drawn to scale-Neptune is approx. 2,795,084,800 miles from the sun (not in picture)
Newton’s Apple, 2015, webCool Cosmos, 2015, web
-Uxor stars are commonly intermediate-mass stars; similar to the mass of our sun.
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Characteristics of Uxors: Formation
-Theories suggest that Uxors are young stars surrounded by a disk of dust and debris.
-The dust and debris aggregate in a formation process to create the young star.
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Characteristics of Uxors: Disks
-The debris cloud is not consistently dense throughout, which causes the star to appear to fluctuate in brightness.
-Theories suggest we are looking at the cloud at an angle into the outer flaring region, which obscures our view. The rest of the time we have a clear perspective of the star.
Outer flaring region
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Uxors and Eclipsing Binary Stars-When two stars are gravitationally pulled towards each other they are known as eclipsing binary stars.
-Appear to dim in brightness similar to Uxors.
-Smooth, consistent dimming period differing from Uxors.
MidnightKite, 2015, web
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Uxors and Eclipsing Binary Stars-Uxors are more erratic with no consistent period between events.
-Uxors will appear to have a color shift as the dust cloud density changes.
-Red due to dust absorption.
-Blue due to unobscured scattered radiation.
Starman, 2015, web
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Uxor versus Eclipsing Binary Star Light CurvesEclipsing Binary
Brig
htne
ssTime (Days)
Uxor
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Archived Data
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Archived Data
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Archived Data
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Archived Data
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Archived Data
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Archived Data
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Conclusion- We have been observing these Uxors for six weeks. Approx. 20 nights
-There are 3 unclear stars with strong light variation that need follow-up observations.
-There is 1 strong candidate to be classified as an Uxor.
-There is 1 star with minimal light variation.