Projects per year
Abstract
We report a time series analysis of satellite photometry of the non-radially pulsating Oe star ζ Oph, principally using data from the Solar Mass Ejection Imager obtained during 2003–2008, but augmented with Microvariability and Oscillations of STars and Wide-field InfraRed Explorer results. Amplitudes of the strongest photometric signals, at 5.18, 2.96 and 2.67 d−1, each vary independently over the 512-year monitoring period (from ∼50 to ≲2 mmag at 5.18 d−1), on time-scales of hundreds of days. Signals at 7.19 and 5.18 d−1 have persisted (or recurred) for at least two decades. Supplementary spectroscopic observations show an Hα emission episode in 2006; this coincided with small increases in amplitudes of the three strongest photometric signals.
Original language | English |
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Pages (from-to) | 1674-1679 |
Number of pages | 6 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 440 |
Issue number | 2 |
Early online date | 25 Mar 2014 |
DOIs | |
Publication status | Published - 11 May 2014 |
Keywords
- astro-ph.SR
- asteroseismology – techniques
- photometric – stars
- activity – stars
- emission line, Be-stars
- individual
- ζ Oph – stars
- oscillations
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Dive into the research topics of 'Amplitude variability in satellite photometry of the non-radially pulsating O9.5V star ζ Oph'. Together they form a unique fingerprint.Projects
- 2 Finished
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Birmingham Astrophysics : Consolidated Grant 2013-2016
Vecchio, A., Ponman, T., Freise, A., Smith, G., Speake, C., Mandel, I., Cruise, M., Raychaudhury, S. & Stevens, I.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/04/13 → 30/09/16
Project: Research Councils
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Sounding the Stars---The Birmingham and Queen Mary Seismology Programme
Elsworth, Y., Chaplin, B. & Miglio, A.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/04/12 → 31/03/15
Project: Research Councils