| DOI | Resolve DOI: https://doi.org/10.1088/2041-8205/728/1/L20 |
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| Author | Search for: Wright, D. J.; Search for: Chené, A.-N.1; Search for: De Cat, P.; Search for: Marois, C.1; Search for: Mathias, P.; Search for: Macintosh, B.; Search for: Isaacs, J.; Search for: Lehmann, H.; Search for: Hartmann, M. |
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| Affiliation | - National Research Council of Canada. NRC Herzberg Institute of Astrophysics
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| Format | Text, Article |
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| Subject | planetary systems; stars: individual (HR 8799); stars: oscillations (including pulsations) |
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| Abstract | Direct imaging of the HR 8799 system was a major achievement in the study of exoplanets. HR 8799 is a gamma Doradus variable and asteroseismology can provide an independent constraint on the inclination. Using 650 high signal-to-noise, high-resolution, full visual wavelength spectroscopic observations obtained over two weeks at Observatoire de Haute Provence with the SOPHIE spectrograph, we find that the main frequency in the radial velocity data is 1.9875 day(-1). This frequency corresponds to the main frequency as found in previous photometric observations. Using the FAMIAS software to identify the pulsation modes, we find that this frequency is a prograde l = 1 sectoral mode and obtain the constraint that inclination i greater than or similar to 40 degrees. |
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| Publication date | 2011-01-21 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 19809244 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | bcb3a9bd-39c8-48a1-b879-19e2e7e650af |
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| Record created | 2012-04-13 |
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| Record modified | 2020-04-21 |
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