Observations of intensity fluctuations attributed to granulation and faculae on Sun-like stars from the Kepler mission

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dc.creator Gruberbauer, Michael
dc.creator Karoff, C.
dc.creator Campante, T. L.
dc.creator Ballot, J.
dc.creator Kallinger, T.
dc.creator Garcia, R. A.
dc.creator Caldwell, D. A.
dc.creator Christiansen, J. L.
dc.creator Kinemuchi, K.
dc.date.accessioned 2015-03-13T13:58:28Z
dc.date.available 2015-03-13T13:58:28Z
dc.date.issued 2013-04-10
dc.identifier.issn 0004-637X
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/25987
dc.description Publisher's version/PDF en_CA
dc.description.abstract Sun-like stars show intensity fluctuations on a number of timescales due to various physical phenomena on their surfaces. These phenomena can convincingly be studied in the frequency spectra of these stars—while the strongest signatures usually originate from spots, granulation, and p-mode oscillations, it has also been suggested that the frequency spectrum of the Sun contains a signature of faculae. We have analyzed three stars observed for 13 months in short cadence (58.84 s sampling) by the Kepler mission. The frequency spectra of all three stars, as for the Sun, contain signatures that we can attribute to granulation, faculae, and p-mode oscillations. The temporal variability of the signatures attributed to granulation, faculae, and p-mode oscillations was analyzed and the analysis indicates a periodic variability in the granulation and faculae signatures—comparable to what is seen in the Sun. en_CA
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dc.description.provenance Made available in DSpace on 2015-03-13T13:58:28Z (GMT). No. of bitstreams: 1 Gruberbauer_Michael_article_2013.pdf: 890827 bytes, checksum: 338b2725728a99be530445e7293d490b (MD5) Previous issue date: 2013-04-10 en
dc.language.iso en en_CA
dc.publisher American Astronomical Society en_CA
dc.relation.uri http://dx.doi.org/10.1088/0004-637X/767/1/34
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.
dc.subject.lcsh Stellar activity
dc.subject.lcsh Stellar oscillations
dc.subject.lcsh Low mass stars
dc.title Observations of intensity fluctuations attributed to granulation and faculae on Sun-like stars from the Kepler mission en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Astrophysical Journal 767(1), 34. (2013) en_CA
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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.
 
Published Version: http://dx.doi.org/10.1088/0004-637X/767/1/34
 
 

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