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Discovery of a brow...
Discovery of a brown dwarf companion to the star HIP 64892
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Cheetham, A. (author)
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Bonnefoy, M. (author)
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Desidera, S. (author)
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show more...
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Langlois, M. (author)
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Vigan, A. (author)
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Schmidt, T. (author)
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Olofsson, J. (author)
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Chauvin, G. (author)
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Klahr, H. (author)
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Gratton, R. (author)
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D'Orazi, V. (author)
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Henning, T. (author)
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- Janson, Markus (author)
- Stockholms universitet,Institutionen för astronomi,Max Planck Institute for Astronomy, Germany
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Biller, B. (author)
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Peretti, S. (author)
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Hagelberg, J. (author)
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Segransan, D. (author)
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Udry, S. (author)
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Mesa, D. (author)
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Sissa, E. (author)
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Kral, Q. (author)
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Schlieder, J. (author)
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Maire, A. -L. (author)
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Mordasini, C. (author)
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Menard, F. (author)
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Zurlo, A. (author)
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Beuzit, J. -L. (author)
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Feldt, M. (author)
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Mouillet, D. (author)
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Meyer, M. (author)
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Lagrange, A. -M. (author)
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Boccaletti, A. (author)
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Keppler, M. (author)
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Kopytova, T. (author)
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Ligi, R. (author)
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Rouan, D. (author)
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Le Coroller, H. (author)
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Dominik, C. (author)
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Lagadec, E. (author)
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Turatto, M. (author)
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Abe, L. (author)
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Antichi, J. (author)
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Baruffolo, A. (author)
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Baudoz, P. (author)
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Blanchard, P. (author)
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Buey, T. (author)
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Carbillet, M. (author)
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Carle, M. (author)
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Cascone, E. (author)
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Claudi, R. (author)
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Costille, A. (author)
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Delboulbe, A. (author)
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De Caprio, V. (author)
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Dohlen, K. (author)
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Fantinel, D. (author)
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Feautrier, P. (author)
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Fusco, T. (author)
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Giro, E. (author)
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Gluck, L. (author)
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Hubin, N. (author)
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Hugot, E. (author)
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Jaquet, M. (author)
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Kasper, M. (author)
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Llored, M. (author)
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Madec, F. (author)
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Magnard, Y. (author)
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Martinez, P. (author)
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Maurel, D. (author)
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Le Mignant, D. (author)
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Moeller-Nilsson, O. (author)
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Moulin, T. (author)
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Origne, A. (author)
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Pavlov, A. (author)
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Perret, D. (author)
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Petit, C. (author)
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Pragt, J. (author)
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Puget, P. (author)
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Rabou, P. (author)
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Ramos, J. (author)
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Rigal, F. (author)
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Rochat, S. (author)
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Roelfsema, R. (author)
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Rousset, G. (author)
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Roux, A. (author)
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Salasnich, B. (author)
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Sauvage, J. -F. (author)
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Sevin, A. (author)
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Soenke, C. (author)
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Stadler, E. (author)
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Suarez, M. (author)
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Weber, L. (author)
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Wildi, F. (author)
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(creator_code:org_t)
- 2018-08-01
- 2018
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 615
- Related links:
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
Close
- 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 +/- 12AU. 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 gamma +/- 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 similar to 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 similar to 0.01) and will be useful for testing models relating to the formation and evolution of such low-mass objects.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- brown dwarfs
- stars: individual: HIP 64892
- techniques: high angular resolution
- planets and satellites: detection
- planets and satellites: atmospheres
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
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Cheetham, A.
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Bonnefoy, M.
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Desidera, S.
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Langlois, M.
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Vigan, A.
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Schmidt, T.
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show more...
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Olofsson, J.
-
Chauvin, G.
-
Klahr, H.
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Gratton, R.
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D'Orazi, V.
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Henning, T.
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Janson, Markus
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Biller, B.
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Peretti, S.
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Hagelberg, J.
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Segransan, D.
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Udry, S.
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Mesa, D.
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Sissa, E.
-
Kral, Q.
-
Schlieder, J.
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Maire, A. -L.
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Mordasini, C.
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Menard, F.
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Zurlo, A.
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Beuzit, J. -L.
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Feldt, M.
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Mouillet, D.
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Meyer, M.
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Lagrange, A. -M.
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Boccaletti, A.
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Keppler, M.
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Kopytova, T.
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Ligi, R.
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Rouan, D.
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Le Coroller, H.
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Dominik, C.
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Lagadec, E.
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Turatto, M.
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Abe, L.
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Antichi, J.
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Baruffolo, A.
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Baudoz, P.
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Blanchard, P.
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Buey, T.
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Carbillet, M.
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Carle, M.
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Cascone, E.
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Claudi, R.
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Costille, A.
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Delboulbe, A.
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De Caprio, V.
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Dohlen, K.
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Fantinel, D.
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Feautrier, P.
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Fusco, T.
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Giro, E.
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Gluck, L.
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Hubin, N.
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Hugot, E.
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Jaquet, M.
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Kasper, M.
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Llored, M.
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Madec, F.
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Magnard, Y.
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Martinez, P.
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Maurel, D.
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Le Mignant, D.
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Moeller-Nilsson, ...
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Moulin, T.
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Origne, A.
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Pavlov, A.
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Perret, D.
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Petit, C.
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Pragt, J.
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Puget, P.
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Rabou, P.
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Ramos, J.
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Rigal, F.
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Rochat, S.
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Roelfsema, R.
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Rousset, G.
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Roux, A.
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Salasnich, B.
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Sauvage, J. -F.
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Sevin, A.
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Soenke, C.
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Stadler, E.
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Suarez, M.
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Weber, L.
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Wildi, F.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astronomy and As ...
- By the university
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Stockholm University