Discovery of a brown dwarf companion to the star HIP 64892

Cheetham, A.; Bonnefoy, M.; Desidera, S.; Langlois, M.; Vigan, A.; Schmidt, T.; Olofsson, J.; Chauvin, G.; Klahr, H.; Gratton, R.; D'Orazi, V.; Henning, T.; Janson, M.; Biller, B.; Peretti, S.; Hagelberg, J.; Ségransan, D.; Udry, S.; Mesa, D.; Sissa, E.; Kral, Q.; Schlieder, J.; Maire, A. -L.; Mordasini, C.; Menard, F.; Zurlo, A.; Beuzit, J. -L.; Feldt, M.; Mouillet, D.; Meyer, M.; Lagrange, A. -M.; Boccaletti, A.; Keppler, M.; Kopytova, T.; Ligi, R.; Rouan, D.; Le Coroller, H.; Dominik, C.; Lagadec, E.; Turatto, M.; Abe, L.; Antichi, J.; Baruffolo, A.; Baudoz, P.; Blanchard, P.; Buey, T.; Carbillet, M.; Carle, M.; Cascone, E.; Claudi, R.; Costille, A.; Delboulbé, A.; De Caprio, V.; Dohlen, K.; Fantinel, D.; Feautrier, P.; Fusco, T.; Giro, E.; Gluck, L.; Hubin, N.; Hugot, E.; Jaquet, M.; Kasper, M.; Llored, M.; Madec, F.; Magnard, Y.; Martinez, P.; Maurel, D.; Le Mignant, D.; Möller-Nilsson, O.; Moulin, T.; Origné, A.; Pavlov, A.; Perret, D.; Petit, C.; Pragt, J.; Puget, P.; Rabou, P.; Ramos, J.; Rigal, F.; Rochat, S.; Roelfsema, R.; Rousset, G.; Roux, A.; Salasnich, B.; Sauvage, J. -F.; Sevin, A.; Soenke, C.; Stadler, E.; Suarez, M.; Weber, L.; Wildi, F.

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Journal Article

Discovery of a brown dwarf companion to the star HIP 64892

MPS-Authors

Cheetham, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bonnefoy, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Desidera, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Langlois, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Vigan, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Schmidt, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Olofsson, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chauvin, G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Klahr, H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gratton, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

D'Orazi, V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Henning, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Janson, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Biller, B.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Peretti, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hagelberg, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ségransan, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Udry, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mesa, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sissa, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kral, Q.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Schlieder, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Maire, A. -L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mordasini, C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Menard, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zurlo, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Beuzit, J. -L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Feldt, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mouillet, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Meyer, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lagrange, A. -M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Boccaletti, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Keppler, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kopytova, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ligi, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rouan, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Le Coroller, H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Dominik, C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lagadec, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Turatto, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Abe, L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Antichi, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Baruffolo, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Baudoz, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Blanchard, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Buey, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Carbillet, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Carle, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cascone, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Claudi, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Costille, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Delboulbé, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

De Caprio, V.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Dohlen, K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fantinel, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Feautrier, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fusco, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Giro, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gluck, L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hubin, N.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hugot, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Jaquet, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kasper, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Llored, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Madec, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Magnard, Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Martinez, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Maurel, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Le Mignant, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Möller-Nilsson, O.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Moulin, T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Origné, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pavlov, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Perret, D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Petit, C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pragt, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Puget, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rabou, P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ramos, J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rigal, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rochat, S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Roelfsema, R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rousset, G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Roux, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Salasnich, B.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sauvage, J. -F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sevin, A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Soenke, C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Stadler, E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Suarez, M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Weber, L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wildi, F.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2018A&A...615A.160C
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Citation

Cheetham, A., Bonnefoy, M., Desidera, S., Langlois, M., Vigan, A., Schmidt, T., et al. (2018). Discovery of a brown dwarf companion to the star HIP 64892. Astronomy and Astrophysics, 615.

Cite as: https://hdl.handle.net/21.11116/0000-0005-CE78-D

Abstract

We report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT/SPHERE during the SHINE exoplanet survey. The host is a B9.5V member of the Lower-Centaurus-Crux subgroup of the Scorpius Centaurus OB association. The measured angular separation of the companion (1.2705 ± 0.0023") corresponds to a projected distance of 159 ± 12 AU. We observed the target with the dual-band imaging and long- slit spectroscopy modes of the IRDIS imager to obtain its spectral energy distribution (SED) and astrometry. In addition, we reprocessed archival NACO L-band data, from which we also recover the companion. Its SED is consistent with a young (<30 Myr), low surface gravity object with a spectral type of M9_γ ± 1. From comparison with the BT- Settl atmospheric models we estimate an effective temperature of T_eff = 2600 ± 100 K, and comparison of the companion photometry to the COND evolutionary models yields a mass of 29-37 M_J at the estimated age of 16_-7⁺¹⁵ Myr for the system. The star HIP 64892 is a rare example of an extreme-mass ratio system (q 0.01) and will be useful for testing models relating to the formation and evolution of such low-mass objects. Based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere under ESO programmes 096.C-0241 and 198.C-0209 (PI: J.-L. Beuzit), 098.A-9007(A) (PI: P. Sarkis), and 087.C-0790(A) (PI: M. Ireland).