Altair: The Brightest δ Scuti Star

2004/05/06 by Derek L. Buzasi, D. L. Buzasi, H. Bruntt +11 · 6 citations
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1086/426704

published as Astrophys.J. 619 (2005) 1072-1076 · 15 pages, 6 figure files (only 5 figures), 2 tables

arxiv created 2004/05/06 · openalex publication_date 2005/01/28 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31

Abstract

We present an analysis of observations of the bright star Altair (α Aql) obtained using the star camera on the Wide Field Infrared Explorer ( WIRE ) satellite. Although Altair lies within the δ Scuti instability strip, previous observations have not revealed the presence of oscillations. However, the WIRE observations show Altair to be a low-amplitude (Δ m < 1 parts per thousand [ppt]) δ Scuti star with at least seven modes present.

Citations

• Oscillations in Arcturus from WIRE Photometry
• Transformations from Theoretical Hertzsprung-Russell Diagrams to Color-Magnitude Diagrams: Effective Temperatures, B-V Colors, and Bolometric Corrections
• Altair’s Oblateness and Rotation Velocity from Long‐Baseline Interferometry

Cited by

• Gravitational-darkening of Altair from interferometry
• Resolving the Effects of Rotation in Altair with Long‐Baseline Interferometry
• Altair – the “hottest” magnetically active star in X-rays
• Catalogue and properties of δ Scuti stars in binaries
• ROTATIONALLY MODULATEDg-MODES IN THE RAPIDLY ROTATING δ SCUTI STAR RASALHAGUE (α OPHIUCHI)
• Altair [wikipedia]