brown dwarfs; circumstellar matter; planet-disk interactions; planetary systems
Abstract :
[en] <BR /> Aims: Uncovering the ingredients and the architecture of planetary systems is a very active field of research that has fuelled many new theories on giant planet formation, migration, composition, and interaction with the circumstellar environment. We aim at discovering and studying new such systems, to further expand our knowledge of how low-mass companions form and evolve. <BR /> Methods: We obtained high-contrast H-band images of the circumstellar environment of the F5V star HD 206893, known to host a debris disc never detected in scattered light. These observations are part of the SPHERE High Angular Resolution Debris Disc Survey (SHARDDS) using the InfraRed Dual-band Imager and Spectrograph (IRDIS) installed on VLT/SPHERE. <BR /> Results: We report the detection of a source with a contrast of 3.6 × 10[SUP]-5[/SUP] in the H-band, orbiting at a projected separation of 270 milliarcsec or 10 au, corresponding to a mass in the range 24 to 73 M[SUB]Jup[/SUB] for an age of the system in the range 0.2 to 2 Gyr. The detection was confirmed ten months later with VLT/NaCo, ruling out a background object with no proper motion. A faint extended emission compatible with the disc scattered light signal is also observed. <BR /> Conclusions: The detection of a low-mass companion inside a massive debris disc makes this system an analog of other young planetary systems such as β Pictoris, HR 8799 or HD 95086 and requires now further characterisation of both components to understand their interactions.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Milli, J.; European Southern Observatory (ESO), Alonso de Córdova 3107, Vitacura, Santiago, Chile
Hibon, P.; European Southern Observatory (ESO), Alonso de Córdova 3107, Vitacura, Santiago, Chile
Choquet, É.; Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA
Bonnefoy, M.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Kennedy, G. M.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, UK
Wyatt, M. C.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, UK
Absil, Olivier ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Gómez González, Carlos ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
del Burgo, C.; Instituto Nacional de Astrofísica, Óptica y Electrónica, Luis Enrique Erro 1, Sta. Ma. Tonantzintla, Puebla, Mexico
Matrà, L.; Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, UK
Augereau, J.-C.; 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, 5 place Jules Janssen, 92195, Meudon, France
Delacroix, Christian ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Ertel, S.; Steward Observatory, University of Arizona, 933 N Cherry Ave, Tucson, AZ, 85719, USA
Dent, W. R. F.; Atacama Large Millimeter/submillimeter Array (ALMA) Santiago Central Offices, Alonso de Córdova 3107, Vitacura, Casilla 763 0355, Santiago, Chile
Forsberg, P.; Department of Engineering Sciences, Ångström Laboratory, Uppsala University, PO Box 534, 751 21, Uppsala, Sweden
Fusco, T.; ONERA, The French Aerospace Lab, BP72, 29 avenue de la Division Leclerc, 92322, Chatillon Cedex, France
Girard, J. H.; European Southern Observatory (ESO), Alonso de Córdova 3107, Vitacura, Santiago, Chile
Habraken, Serge ; Université de Liège > Département de physique > Optique - Hololab
Huby, Elsa ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Karlsson, M.; Department of Engineering Sciences, Ångström Laboratory, Uppsala University, PO Box 534, 751 21, Uppsala, Sweden
Lagrange, A.-M.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Mawet, D.; Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA, 91109, USA ; Department of Astronomy, California Institute of Technology, 1200 E. California Blvd, MC 249-17, Pasadena, CA, 91125, USA
Mouillet, D.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Perrin, M.; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, 21218, USA
Pinte, C.; Univ. Grenoble Alpes, CNRS, IPAG, 38000, Grenoble, France
Pueyo, L.; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, 21218, USA
Reyes, C.; European Southern Observatory (ESO), Alonso de Córdova 3107, Vitacura, Santiago, Chile
Soummer, R.; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD, 21218, USA
Surdej, Jean ; Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Tarricq, Y.; European Southern Observatory (ESO), Alonso de Córdova 3107, Vitacura, Santiago, Chile
Wahhaj, Z.; European Southern Observatory (ESO), Alonso de Córdova 3107, Vitacura, Santiago, Chile)
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Absil, O., Milli, J., Mawet, D., et al. 2013, A&A, 559, L12
Baraffe, I., Chabrier, G., Barman, T. S., Allard, F., & Hauschildt, P. H. 2003, A&A, 402, 701
Bowler, B. P. 2016, PASP, 128, 102001
Bowler, B. P., Liu, M. C., Shkolnik, E. L., & Dupuy, T. J. 2013, ApJ, 774, 55
Chabrier, G., Baraffe, I., Allard, F., & Hauschildt, P. 2000, ApJ, 542, 464
Chen, C. H., Mittal, T., Kuchner, M., et al. 2014, ApJS, 211, 25
Choquet, É., Perrin, M. D., Chen, C. H., et al. 2016, ApJ, 817, L2
David, T. J., & Hillenbrand, L. A. 2015, ApJ, 804, 146
Dohlen, K., Langlois, M., Saisse, M., et al. 2008, in Ground-based and Airborne Instrumentation for Astronomy II, Proc. SPIE, 7014
Galicher, R., Rameau, J., Bonnefoy, M., et al. 2014, A&A, 565, L4
Galicher, R., Marois, C., Macintosh, B., et al. 2016, A&A, 594, A63
Gomez Gonzalez, C. A., Wertz, O., Absil, O., et al. 2017, ApJ, submitted
Holman, M. J., & Wiegert, P. A. 1999, AJ, 117, 621
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.