dc.creator |
Guenther, David B. |
|
dc.creator |
Townsend, R. H. D. |
|
dc.creator |
Rivinius, Th. |
|
dc.creator |
Rowe, J. F. |
|
dc.creator |
Moffat, A. F. J. |
|
dc.creator |
Matthews, J. M. |
|
dc.creator |
Bohlender, D. |
|
dc.creator |
Neiner, C. |
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dc.creator |
Telting, J. H. |
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dc.creator |
Kallinger, T. |
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dc.date.accessioned |
2015-05-04T15:30:48Z |
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dc.date.available |
2015-05-04T15:30:48Z |
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dc.date.issued |
2013-05-20 |
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dc.identifier.issn |
0004-637X |
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dc.identifier.uri |
http://library2.smu.ca/xmlui/handle/01/26095 |
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dc.description |
Publisher's version/PDF |
en_CA |
dc.description.abstract |
We present results from three weeks’ photometric monitoring of the magnetic helium-strong star [sigma] Ori E using the Microvariability and Oscillations of Stars microsatellite. The star’s light curve is dominated by twice-per-rotation eclipse-like dimmings arising when magnetospheric clouds transit across and occult the stellar disk. However, no evidence is found for any abrupt centrifugal breakout of plasma from the magnetosphere, either in the residual flux or in the depths of the light minima. Motivated by this finding we compare the observationally inferred magnetospheric mass against that predicted by a breakout analysis. The large discrepancy between the values leads us to argue that centrifugal breakout does not play a significant role in establishing the magnetospheric mass budget of [sigma] Ori E. |
en_CA |
dc.description.provenance |
Submitted by Janine Mills (janine.mills@smu.ca) on 2015-05-04T15:30:48Z
No. of bitstreams: 1
Guenther_David_B_article_2013.pdf: 976559 bytes, checksum: 4e8d9e9e23af45ebc0097de99c611543 (MD5) |
en |
dc.description.provenance |
Made available in DSpace on 2015-05-04T15:30:48Z (GMT). No. of bitstreams: 1
Guenther_David_B_article_2013.pdf: 976559 bytes, checksum: 4e8d9e9e23af45ebc0097de99c611543 (MD5)
Previous issue date: 2013-05-20 |
en |
dc.language.iso |
en |
en_CA |
dc.publisher |
American Astronomical Society |
en_CA |
dc.publisher |
IOP Science |
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dc.relation.uri |
http://dx.doi.org/10.1088/0004-637X/769/1/33 |
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dc.rights |
Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user. |
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dc.subject.lcsh |
Circumstellar matter |
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dc.subject.lcsh |
Peculiar stars |
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dc.subject.lcsh |
Early stars |
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dc.subject.lcsh |
Stars -- Magnetic fields |
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dc.subject.lcsh |
Stars -- Rotation |
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dc.title |
MOST observations of [sigma] Ori E: challenging the centrifugal breakout narrative |
en_CA |
dc.type |
Text |
en_CA |
dcterms.bibliographicCitation |
Astrophysical Journal 769(1), 33. (2013) |
en_CA |
Copyright statement:
Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.