Discovery of a low-mass companion inside the debris ring surrounding the F5V star HD 206893

被引：67

作者：

Milli, J. ^{[1
,8
]}

Hibon, P.

Christiaens, V. ^{[3
]}

Choquet, E.

Bonnefoy, M. ^{[2
,5
]}

Kennedy, G. M. ^{[12
]}

Wyatt, M. C. ^{[10
,15
]}

Absil, O. ^{[1
]}

Gonzalez, C. A. Gomez

del Burgo, C. ^{[11
]}

Matra, L. ^{[2
,6
]}

Augereau, J. -C. ^{[3
,5
]}

Boccaletti, A.

Delacroix, C.

Ertel, S. ^{[1
,2
,8
,16
]}

Dent, W. R. F. ^{[9
]}

Forsberg, P.

Fusco, T. ^{[13
,14
]}

Girard, J. H. ^{[1
,3
,4
,7
]}

Habraken, S. ^{[2
,12
]}

Huby, E. ^{[2
]}

Karlsson, M. ^{[9
]}

Lagrange, A. -M. ^{[5
,15
,16
]}

Mawet, D. ^{[13
]}

Mouillet, D.

Perrin, M.

Pinte, C. ^{[11
]}

Pueyo, L. ^{[4
,6
,14
]}

Reyes, C.

Soummer, R.

Surdej, J.

Tarricq, Y.

Wahhaj, Z.

机构：

[1] ESO, Alonso Cordova 3107, Santiago, Chile

[2] Univ Chile, Dept Astron, Casilla 36-D, Santiago, Chile

[3] Millenium Nucleus Protoplanetary Disks ALMA Early, Santiago, Chile

[4] Univ Liege, Space Sci Technol & Astrophys Res STAR Inst, 19c Allee 6 Aout, B-4000 Liege, Belgium

[5] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

[6] Univ Grenoble Alpes, CNRS, IPAG, F-38000 Grenoble, France

[7] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge, England

[8] Inst Nacl Astrofis, Opt Elect, Luis Enrique Erro 1, Puebla, Mexico

[9] PSL Res Univ, Sorbonne Univ, UPMC Univ Paris 06, Univ Paris Diderot, 5 Pl Jules Janssen, F-92195 Meudon, France

[10] Cornell Univ, Sibley Sch Mech & Aerosp Engn, Ithaca, NY USA

[11] Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85719 USA

[12] Atacama Large Millimeter Submillimeter Array ALMA, Santiago Cent Off, Alonso Cordova 3107,Casilla 763, Santiago, Chile

[13] Uppsala Univ, Dept Engn Sci, Angstrom Lab, POB 534, S-75121 Uppsala, Sweden

[14] French Aerosp Lab, ONERA, BP72,29 Ave Div Leclerc, F-92322 Chatillon, France

[15] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[16] CALTECH, Dept Astron, 1200 Calif Blvd, Pasadena, CA 91125 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2017年 / 597卷

基金：

欧洲研究理事会;

关键词：

brown dwarfs; circumstellar matter; planet-disk interactions; planetary systems; GEMINI PLANET IMAGER; BROWN DWARFS; EVOLUTIONARY MODELS; BETA-PICTORIS; GIANT PLANETS; DISK; EXOPLANETS; CORONAGRAPH; PHOTOMETRY; REDUCTION;

D O I：

10.1051/0004-6361/201629908

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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. 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. Results. We report the detection of a source with a contrast of 3 : 6 x 10(-5) 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-Jup 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. 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 beta Pictoris, HR 8799 or HD 95086 and requires now further characterisation of both components to understand their interactions.

引用

页数：6

共 41 条

[1] Searching for companions down to 2 AU from β Pictoris using the L'-band AGPM coronagraph on VLT/NACO [J].

Absil, O. ;

Milli, J. ;

Mawet, D. ;

Lagrange, A. -M. ;

Girard, J. ;

Chauvin, G. ;

Boccaletti, A. ;

Delacroix, C. ;

Surdej, J. .

ASTRONOMY & ASTROPHYSICS, 2013, 559

[2] Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 209458 [J].

Baraffe, I ;

Chabrier, G ;

Barman, TS ;

Allard, F ;

Hauschildt, PH .

ASTRONOMY & ASTROPHYSICS, 2003, 402 (02) :701-712

[3] Imaging Extrasolar Giant Planets [J].

Bowler, Brendan P. .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2016, 128 (968)

[4] PLANETS AROUND LOW-MASS STARS. III. A YOUNG DUSTY L DWARF COMPANION AT THE DEUTERIUM-BURNING LIMIT [J].

Bowler, Brendan P. ;

Liu, Michael C. ;

Shkolnik, Evgenya L. ;

Dupuy, Trent J. .

ASTROPHYSICAL JOURNAL, 2013, 774 (01)

[5] Evolutionary models for very low-mass stars and brown dwarfs with dusty atmospheres [J].

Chabrier, G ;

Baraffe, I ;

Allard, F ;

Hauschildt, P .

ASTROPHYSICAL JOURNAL, 2000, 542 (01) :464-472

[6] THE SPITZER INFRARED SPECTROGRAPH DEBRIS DISK CATALOG. I. CONTINUUM ANALYSIS OF UNRESOLVED TARGETS [J].

Chen, Christine H. ;

Mittal, Tushar ;

Kuchner, Marc ;

Forrest, William J. ;

Lisse, Carey M. ;

Manoj, P. ;

Sargent, Benjamin A. ;

Watson, Dan M. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2014, 211 (02)

[7] FIRST IMAGES OF DEBRIS DISKS AROUND TWA 7, TWA 25, HD 35650, AND HD 377 [J].

Choquet, Elodie ;

Perrin, Marshall D. ;

Chen, Christine H. ;

Soummer, Remi ;

Pueyo, Laurent ;

Hagan, James B. ;

Gofas-Salas, Elena ;

Rajan, Abhijith ;

Golimowski, David A. ;

Hines, Dean C. ;

Schneider, Glenn ;

Mazoyer, Johan ;

Augereau, Jean-Charles ;

Debes, John ;

Stark, Christopher C. ;

Wolff, Schuyler ;

N'Diaye, Mamadou ;

Hsiao, Kevin .

ASTROPHYSICAL JOURNAL LETTERS, 2016, 817 (01)

[8] THE AGES OF EARLY-TYPE STARS: STROMGREN PHOTOMETRIC METHODS CALIBRATED, VALIDATED, TESTED, AND APPLIED TO HOSTS AND PROSPECTIVE HOSTS OF DIRECTLY IMAGED EXOPLANETS [J].

David, Trevor J. ;

Hillenbrand, Lynne A. .

ASTROPHYSICAL JOURNAL, 2015, 804 (02)

[9]

Dohlen K., 2008, Proc. SPIE, V7014, p70143L

[10] The International Deep Planet Survey II. The frequency of directly imaged giant exoplanets with stellar mass [J].

Galicher, R. ;

Marois, C. ;

Macintosh, B. ;

Zuckerman, B. ;

Barman, T. ;

Konopacky, Q. ;

Song, I. ;

Patience, J. ;

Lafreniere, D. ;

Doyon, R. ;

Nielsen, E. L. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

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