Post-conjunction detection of β Pictoris b with VLT/SPHERE
Author
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Lagrange, Anne Marie
Author
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Boccaletti, A.
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Langlois, M.
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Chauvin, G.
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Gratton, R.
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Beust, H.
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Desidera, S.
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Milli, J.
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Bonnefoy, M.
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Cheetham, A.
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Feldt, M.
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Meyer, M.
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Vigan, A.
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Biller, B.
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Bonavita, M.
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Baudino, J. L.
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Cantalloube, F.
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Cudel, M.
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Daemgen, S.
Author
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Delorme, P.
Author
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D'Orazi,
Admission date
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2019-10-15T12:23:36Z
Available date
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2019-10-15T12:23:36Z
Publication date
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2019
Cita de ítem
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Astronomy and Astrophysics, Volumen 621,
Identifier
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14320746
Identifier
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00046361
Identifier
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10.1051/0004-6361/201834302
Identifier
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https://repositorio.uchile.cl/handle/2250/171576
Abstract
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Context. With an orbital distance comparable to that of Saturn in the solar system, β Pictoris b is the closest (semi-major axis ≃ 9 au) exoplanet that has been imaged to orbit a star. Thus it offers unique opportunities for detailed studies of its orbital, physical, and atmospheric properties, and of disk-planet interactions. With the exception of the discovery observations in 2003 with NaCo at the Very Large Telescope (VLT), all following astrometric measurements relative to β Pictoris have been obtained in the southwestern part of the orbit, which severely limits the determination of the planet's orbital parameters. Aims. We aimed at further constraining β Pictoris b orbital properties using more data, and, in particular, data taken in the northeastern part of the orbit. Methods. We used SPHERE at the VLT to precisely monitor the orbital motion of beta β Pictoris b since first light of the instrument in 2014. Results. We were able to monitor the planet until November 201