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The search for slow moving planets in the distant solar system Ashton, Edward James
Abstract
Out beyond the giant planets is a collection of bodies left over from planet formation. The objects that are just beyond Neptune are well studied compared to those that journey hundreds of au away; all such objects have been observed inside 100 au. We use a deep narrow survey and an uncommon technique to search for objects currently at large heliocentric distances. Using data from the Outer Solar System Origins Survey (OSSOS), which covered ∼160 square degrees down to r ∼ 25, we searched for objects beyond 300 au. To find such objects we created a catalogue of all of the objects that were stationary of the astronomical seeing in three images taken over 2 hours. We then examined the stationary objects that were no longer there days/weeks/months before and after the three images. Although other astronomical phenomena like supernovae where discovered, no slow moving solar system object was found. From the null detection and using a survey simulator we obtain a 95% upper limit to the number of dwarf planets (-3 > H > 2) in the distant solar system, 1100 (+1700/−800). To our knowledge this is the first published limit for dwarf planets beyond several hundred au.
Item Metadata
Title |
The search for slow moving planets in the distant solar system
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2017
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Description |
Out beyond the giant planets is a collection of bodies left over from planet formation. The
objects that are just beyond Neptune are well studied compared to those that journey hundreds
of au away; all such objects have been observed inside 100 au. We use a deep narrow survey
and an uncommon technique to search for objects currently at large heliocentric distances.
Using data from the Outer Solar System Origins Survey (OSSOS), which covered ∼160 square
degrees down to r ∼ 25, we searched for objects beyond 300 au. To find such objects we
created a catalogue of all of the objects that were stationary of the astronomical seeing in three
images taken over 2 hours. We then examined the stationary objects that were no longer there
days/weeks/months before and after the three images. Although other astronomical phenomena
like supernovae where discovered, no slow moving solar system object was found. From the null
detection and using a survey simulator we obtain a 95% upper limit to the number of dwarf
planets (-3 > H > 2) in the distant solar system, 1100 (+1700/−800). To our knowledge this is the first published limit for dwarf planets beyond several hundred au.
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Genre | |
Type | |
Language |
eng
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Date Available |
2017-08-31
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0355253
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2017-11
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Campus | |
Scholarly Level |
Graduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International