stars: individual: HD 284149; brown dwarfs; binaries: visual; stars: rotation; techniques: high angular resolution; Astrophysics - Earth and Planetary Astrophysics
Abstract :
[en] <BR /> Aims: In this paper we present the results of the SPHERE observation of the <ASTROBJ>HD 284149</ASTROBJ> system, aimed at a more detailed characterisation of both the primary and its brown dwarf companion. <BR /> Methods: We observed <ASTROBJ>HD 284149</ASTROBJ> in the near-infrared with SPHERE, using the imaging mode (IRDIS+IFS) and the long-slit spectroscopy mode (IRDIS-LSS). The data were reduced using the dedicated SPHERE pipeline, and algorithms such as PCA and TLOCI were applied to reduce the speckle pattern. <BR /> Results: The IFS images revealed a previously unknown low-mass ( 0.16 M[SUB]☉[/SUB]) stellar companion (<ASTROBJ>HD 294149</ASTROBJ> B) at 0.1'', compatible with previously observed radial velocity differences, as well as proper motion differences between Gaia and Tycho-2 measurements. The known brown dwarf companion (<ASTROBJ>HD 284149</ASTROBJ> b) is clearly visible in the IRDIS images. This allowed us to refine both its photometry and astrometry. The analysis of the medium resolution IRDIS long slit spectra also allowed a refinement of temperature and spectral type estimates. A full reassessment of the age and distance of the system was also performed, leading to more precise values of both mass and semi-major axis. <BR /> Conclusions: As a result of this study, <ASTROBJ>HD 284149</ASTROBJ> ABb therefore becomes the latest addition to the (short) list of brown dwarfs on wide circumbinary orbits, providing new evidence to support recent claims that object in such configuration occur with a similar frequency to wide companions to single stars. <P />The reduced spectrum is only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://130.79.128.5">http://130.79.128.5</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/608/A106">http://cdsarc.u-strasbg.fr/viz- bin/qcat?J/A+A/608/A106</A>
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Bonavita, M.; INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122, Padova, Italy ; Institute for Astronomy, The University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK
Vigan, A.; Aix Marseille Univ., CNRS, LAM, Laboratoire d'Astrophysique de Marseille, 13013, Marseille, France
Bonnefoy, M.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Zurlo, A.; Aix Marseille Univ., CNRS, LAM, Laboratoire d'Astrophysique de Marseille, 13013, Marseille, France ; Núcleo de Astronomía, Facultad de Ingeniería, Universidad Diego Portales, Av. Ejercito 441, Santiago, Chile
Antichi, J.; INAF-Osservatorio Astrofisico di Arcetri, L.go E. Fermi 5, 50125, Firenze, Italy ; INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122, Padova, Italy
Avenhaus, H.; Institute for Astronomy, ETH Zurich, Wolfgang-Pauli Strasse 27, 8093, Zurich, Switzerland ; Max-Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany ; Universidad de Chile, Camino el Observatorio, 1515, Santiago, Chile
Baudino, J. L.; Department of Physics, University of Oxford, Parks Rd, Oxford, OX1 3PU, UK
Beuzit, J. L.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Boccaletti, A.; LESIA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, 75013, Paris, France
Bruno, P.; INAF-Osservatorio Astronomico di Catania, via Santa Sofia, 78, Catania, Italy
Buey, T.; LESIA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, 75013, Paris, France
Carbillet, M.; Núcleo de Astronomía, Facultad de Ingeniería, Universidad Diego Portales, Av. Ejercito 441, Santiago, Chile
Feldt, M.; Max-Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Galicher, R.; LESIA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, 75013, Paris, France
Gry, C.; Aix Marseille Univ., CNRS, LAM, Laboratoire d'Astrophysique de Marseille, 13013, Marseille, France
Hagelberg, J.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Incorvaia, S.; INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano, via E. Bassini 15, 20133, Milano, Italy
Janson, M.; Max-Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany ; Department of Astronomy, Stockholm University, AlbaNova University Center, 106 91, Stockholm, Sweden
Jaquet, M.; Aix Marseille Univ., CNRS, LAM, Laboratoire d'Astrophysique de Marseille, 13013, Marseille, France
Lagrange, A. M.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Langlois, M.; Aix Marseille Univ., CNRS, LAM, Laboratoire d'Astrophysique de Marseille, 13013, Marseille, France
Lannier, J.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Le Coroller, H.; Aix Marseille Univ., CNRS, LAM, Laboratoire d'Astrophysique de Marseille, 13013, Marseille, France
Ligi, R.; Aix Marseille Univ., CNRS, LAM, Laboratoire d'Astrophysique de Marseille, 13013, Marseille, France
Maire, Anne-Lise ; Max Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Meyer, M.; Institute for Astronomy, ETH Zurich, Wolfgang-Pauli Strasse 27, 8093, Zurich, Switzerland ; Department of Astronomy, University of Michigan, 1085 S. University, Ann Arbor, MI, 48109, USA
Menard, F.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France ; European Southern Observatory (ESO), Karl-Schwarzschild-Str. 2, 85748, Garching, Germany
Perrot, C.; LESIA, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, Univ. Paris Diderot, Sorbonne Paris Cité, 75013, Paris, France
Peretti, S.; Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290, Sauverny, Switzerland
Petit, C.; ONERA (Office National d’Études et de Recherches Aérospatiales), BP 72, 92322 Châtillon, France
Ramos, J.; Max-Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Roux, A.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Salter, G.; Aix Marseille Univ., CNRS, LAM, Laboratoire d'Astrophysique de Marseille, 13013, Marseille, France
Samland, M.; Max-Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany
Scuderi, S.; INAF-Osservatorio Astronomico di Catania, via Santa Sofia, 78, Catania, Italy
Schlieder, J.; Max-Planck Institute for Astronomy, Königstuhl 17, 69117, Heidelberg, Germany ; NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA
Surez, M.; ONERA (Office National d'Études et de Recherches Aérospatiales), BP 72, 92322, Châtillon, France
Turatto, M.; INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122, Padova, Italy
Weber, L.; Observatoire Astronomique de l'Université de Genève, Chemin des Maillettes 51, 1290, Sauverny, Switzerland)
Bailey, V., Meshkat, T., Reiter, M., et al. 2014, ApJ, 780, L4
Barae, I., Chabrier, G., Barman, T. S., Allard, F., & Hauschildt, P. H. 2003, A&A, 402, 701
Bate, M. R., Bonnell, I. A., & Bromm, V. 2003, MNRAS, 339, 577
Béjar, V. J. S., Zapatero Osorio, M. R., Pérez-Garrido, A., et al. 2008, ApJ, 673, L185
Bell, C. P. M., Mamajek, E. E., & Naylor, T. 2015, MNRAS, 454, 593
Beuzit, J.-L., Feldt, M., Dohlen, K., et al. 2008, in Ground-based and Airborne Instrumentation for Astronomy II, SPIE, 7014, 701418
Biller, B. A., Liu, M. C., Wahhaj, Z., et al. 2010, ApJ, 720, L82
Bonavita, M., Daemgen, S., Desidera, S., et al. 2014, ApJ, 791, L40
Bonavita, M., Desidera, S., Thalmann, C., et al. 2016, A&A, 593, A38
Bonnefoy, M., Chauvin, G., Lagrange, A.-M., et al. 2014, A&A, 562, A127
Bonnefoy, M., Zurlo, A., Baudino, J. L., et al. 2016, A&A, 587, A58
Bowler, B. P., Liu, M. C., Mawet, D., et al. 2017, AJ, 153, 18
Bressan, A., Marigo, P., Girardi, L., et al. 2012, MNRAS, 427, 127
Brott, I., & Hauschildt, P. H. 2005, in The Three-Dimensional Universe with Gaia, eds. C. Turon, K. S. O'Flaherty, & M. A. C. Perryman, ESA SP, 576, 565
Burgasser, A. J. 2014, in Astronomical Society of India Conf. Ser., 11
Butters, O. W., West, R. G., Anderson, D. R., et al. 2010, A&A, 520, L10
Carson, J., Thalmann, C., Janson, M., et al. 2013, ApJ, 763, L32
Daemgen, S., Bonavita, M., Jayawardhana, R., Lafrenière, D., & Janson, M. 2015, ApJ, 799, 155
De Rosa, R. J., Patience, J., Ward-Duong, K., et al. 2014, MNRAS, 445, 3694
Delorme, P., Gagné, J., Girard, J. H., et al. 2013, A&A, 553, L5
Desidera, S., Covino, E., Messina, S., et al. 2015, A&A, 573, A126
Dobson, A. K., Donahue, R. A., Radick, R. R., & Kadlec, K. L. 1990, in Cool Stars, Stellar Systems, and the Sun, ed. G. Wallerstein, ASP Conf. Ser., 9, 132
Dohlen, K., Langlois, M., Saisse, M., et al. 2008, in Ground-based and Airborne Instrumentation for Astronomy II, SPIE, 7014, 70143L
Donahue, R. A., & Baliunas, S. L. 1992, ApJ, 393, L63
Dupuy, T. J., & Kraus, A. L. 2013, Science, 341, 1492
Dupuy, T. J., Forbrich, J., Rizzuto, A., et al. 2016, ApJ, 827, 23
Faherty, J. K., Burgasser, A. J., Walter, F. M., et al. 2012, ApJ, 752, 56
Filippazzo, J. C., Rice, E. L., Faherty, J., et al. 2015, ApJ, 810, 158
Forgan, D., & Rice, K. 2013, MNRAS, 432, 3168
Forgan, D., Parker, R. J., & Rice, K. 2015, MNRAS, 447, 836
Gagné, J., Faherty, J. K., Cruz, K. L., et al. 2015, ApJS, 219, 33
Gaia Collaboration (Brown, A. G. A., et al.) 2016, A&A, 595, A2
Gauza, B., Béjar, V. J. S., Pérez-Garrido, A., et al. 2015, ApJ, 804, 96
Gizis, J. E., Allers, K. N., Liu, M. C., et al. 2015, ApJ, 799, 203
Grankin, K. N., Artemenko, S. A., & Melnikov, S. Y. 2007, IBVS, 5752
Harrington, R. S., & Dahn, C. C. 1980, AJ, 85, 454
Horne, J. H., & Baliunas, S. L. 1986, ApJ, 302, 757
Janson, M., Bonavita, M., Klahr, H., & Lafrenière, D. 2012, ApJ, 745, 4
Jenkins, J. S., Ramsey, L. W., Jones, H. R. A., et al. 2009, ApJ, 704, 975
Kirkpatrick, J. D. 2005, ARA&A, 43, 195
Kirkpatrick, J. D., Reid, I. N., Liebert, J., et al. 2000, AJ, 120, 447
Kirkpatrick, J. D., Cushing, M. C., Gelino, C. R., et al. 2011, ApJS, 197, 19
Kraus, A. L., Herczeg, G. J., Rizzuto, A. C., et al. 2017, ApJ, 838, 150
Lachapelle, F.-R., Lafrenière, D., Gagné, J., et al. 2015, ApJ, 802, 61
Lafrenière, D., Jayawardhana, R., & van Kerkwijk, M. H. 2010, ApJ, 719, 497
Lagrange, A.-M., Bonnefoy, M., Chauvin, G., et al. 2010, Science, 329, 57
Langlois, M., Vigan, A., Moutou, C., et al. 2013, in Proceedings of the Third AO4ELT Conference, eds. S. Esposito, & L. Fini, 63
Leggett, S. K., Allard, F., Dahn, C., et al. 2000, ApJ, 535, 965
Liu, M. C., Magnier, E. A., Deacon, N. R., et al. 2013, ApJ, 777, L20
Liu, M. C., Dupuy, T. J., & Allers, K. N. 2016, ApJ, 833, 96
Luhman, K. L., Mamajek, E. E., Shukla, S. J., & Loutrel, N. P. 2017, AJ, 153, 46
Mace, G. N., Kirkpatrick, J. D., Cushing, M. C., et al. 2013, ApJS, 205, 6
Macintosh, B., Graham, J. R., Barman, T., et al. 2015, Science, 350, 64
Maire, A.-L., Bonnefoy, M., Ginski, C., et al. 2016a, A&A, 587, A56
Maire, A.-L., Langlois, M., Dohlen, K., et al. 2016b, in SPIE Conf. Ser., 9908, 990834
Makarov, V. V., & Kaplan, G. H. 2005, AJ, 129, 2420
Marois, C., Lafrenière, D., Doyon, R., Macintosh, B., & Nadeau, D. 2006a, ApJ, 641, 556
Marois, C., Lafrenière, D., Macintosh, B., & Doyon, R. 2006b, ApJ, 647, 612