Published July 2019
| Published
Journal Article
Open
High-contrast Imaging Study on the Candidate Companions Around the Star AH Lep
- Creators
- Brown Sevilla, Samantha B.
- Cantalloube, Faustine
- Brandner, Wolfgang
- Feldt, Markus
- Henning, Thomas
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Maire, Anne-Lise
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Schlieder, Joshua
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Boccaletti, A.
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Bonnefoy, M.
- Chauvin, G.
- Desidera, S.
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D'Orazi, V.
- Gratton, R.
- Keppler, M.
- Lagrange, A-M.
- Langlois, M.
- Mesa, D.
- Meyer, M.
- Samland, M.
- Schmidt, T.
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Vigan, A.
Abstract
AH Lep (R.A._(J2000) = 05 34 09.16, decl._(J2000) = −15 17 03.18) is a young, nearby, solar-type star (G2V). Gaia DR2 and BANYAN Sigma provide a 99.9% probability of the star belonging to the Columba moving group (Zuckerman et al. 2011), yielding an estimated age of 42^(+6)_(-4) Myr (Bell et al. 2015). It has a parallax of p = 17.26 mas, corresponding to a distance of d = 57.9 pc (Gaia Collaboration et al. 2018). The star has been reported to have variable photospheric and X-ray emission (e.g., Burleigh et al. 1998; Cutispoto et al. 2003).
Additional Information
© 2019 The American Astronomical Society. Received 2019 July 12; Accepted 2019 July 17; Published 2019 July 23. The authors thank the ESO Paranal Staff for support in conducting the observations and Philippe Delorme, Eric Lagadec, and Nadège Meunier (SPHERE Data Center) for their help with the data reduction. SPHERE is an instrument designed and built by a consortium consisting of IPAG, MPIA, LAM, LESIA, Laboratoire Lagrange, INAF—Osservatorio di Padova, Observatoire astronomique de l'Université de Genève, ETH Zurich, NOVA, ONERA, and ASTRON, in collaboration with ESO. SPHERE was funded by ESO, with additional contributions from the CNRS, MPIA, INAF, FINES, and NOVA. SPHERE also received funding from the European Commission FP6 (RII3-Ct-2004-001566 for 2004–2008) and FP7 (226604 for 2009–2012, and 312430 for 2013–2016) as part of OPTICON.Attached Files
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Additional details
- Eprint ID
- 97357
- Resolver ID
- CaltechAUTHORS:20190723-111232541
- European Southern Observatory (ESO)
- Centre National de la Recherche Scientifique (CNRS)
- Max Planck Institute for Astronomy (MPIA)
- Istituto Nazionale di Astrofisica (INAF)
- FINES
- Nederlandse Onderzoekschool voor de Astronomie (NOVA)
- RII3-Ct-2004-001566
- European Research Council (ERC)
- 226604
- European Research Council (ERC)
- 312430
- European Research Council (ERC)
- Created
-
2019-07-23Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field