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ASTROPHYSICAL JOURNAL
Volume 619, Issue 2, Pages 1072-1076Publisher
IOP PUBLISHING LTD
DOI: 10.1086/426704
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We present an analysis of observations of the bright star Altair (alpha Aql) obtained using the star camera on the Wide Field Infrared Explorer (WIRE) satellite. Although Altair lies within the delta Scuti instability strip, previous observations have not revealed the presence of oscillations. However, the WIRE observations show Altair to be a low-amplitude (Deltam < 1 parts per thousand [ppt]) delta Scuti star with at least seven modes present.
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