Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70 - ONERA - Office national d'études et de recherches aérospatiales Accéder directement au contenu
Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2018

Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70

M. Keppler (1) , M. Benisty (2) , A. Müller (1) , Th. Henning (1) , R. van Boekel (3) , F. Cantalloube (1, 4) , C. Ginski (5) , R. G. van Holstein (5) , A.-L. Maire (1) , A. Pohl (1) , M. Samland (1) , H. Avenhaus (6) , J.-L. Baudino (7) , A. Boccaletti (8) , J. de Boer (5) , M. Bonnefoy (2) , G. Chauvin (2) , S. Desidera (9) , M. Langlois (10) , C. Lazzoni (9) , G.-D. Marleau (1, 11) , C. Mordasini (12) , N. Pawellek (1, 13) , T. Stolker (3) , Arthur Vigan (10) , A. Zurlo (10) , T. Birnstiel (14) , W. Brandner (1) , M. Feldt (1) , M. Flock (1, 15, 16) , J. Girard (2) , R. Gratton (9) , J. Hagelberg (2) , A. Isella (17) , M. Janson (18) , A. Juhasz (19) , J. Kemmer (1) , Q. Kral (8) , A.-M. Lagrange (2) , R. Launhardt (1) , A. Matter (20) , F. Ménard (2) , J. Milli (21) , P. Mollière (1) , J. Olofsson (22) , L. Perez (23) , P. Pinilla (24) , C. Pinte (2, 23, 25) , S. P. Quanz (6) , T. Schmidt (6, 8) , S. Udry (26) , Z. Wahhaj (21) , J. P. Williams (27) , E. Buenzli (1) , M. Cudel (2) , C. Dominik (3) , R. Galicher (8) , M. Kasper (21) , J. Lannier (2) , D. Mesa (9) , D. Mouillet (2) , S. Peretti (28) , C. Perrot (8) , G. Salter (10) , E. Sissa (9) , F. Wildi (26) , L. Abe (20) , J. Antichi (17) , J.-C. Augereau (2) , A. Baruffolo (9) , P. Baudoz (8) , A. Bazzon (29) , J.-L. Beuzit (10) , P. Blanchard (10) , S. S. Brems (30) , T. Buey (8) , V. de Caprio (31) , M. Carbillet (20) , M. Carle (10) , E. Cascone (31) , A. Cheetham (26) , R. Claudi (9) , A. Costille (10) , A. Delboulbé (2) , K. Dohlen (10) , D. Fantinel (9) , P. Feautrier (2) , T. Fusco (10, 32) , E. Giro (9) , L. Gluck (2) , C. Gry (10) , N. Hubin (21) , E. Hugot (10) , M. Jaquet (10) , D. Le Mignant (10) , M. Llored (10) , F. Madec (10) , Y. Magnard (2) , P. Martinez (20) , D. Maurel (2) , M. Meyer (29, 33) , O. Moller-Nilsson (1) , T. Moulin (2) , L. Mugnier (32) , A. Origné (10) , A. Pavlov (1) , D. Perret (8) , C. Petit (32) , J. Pragt (34) , P. Puget (2) , P. Rabou (2) , J. Ramos (35) , F Rigal (3) , S. Rochat (2) , R. Roelfsema (34) , G. Rousset (10, 8) , A. Roux (2) , B. Salasnich (9) , J.-F. Sauvage (10, 32) , A. Sevin (8) , C. Soenke (21) , E. Stadler (2) , M. Suarez (21) , M. Turatto (9) , L. Weber (26)
1 MPIA - Max-Planck-Institut für Astronomie
2 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
3 AI PANNEKOEK - Astronomical Institute Anton Pannekoek
4 DOTA, ONERA, Université Paris Saclay (COmUE) [Palaiseau]
5 Leiden Observatory [Leiden]
6 ETH Zürich - Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich]
7 University of Oxford
8 LESIA (UMR_8109) - Laboratoire d'études spatiales et d'instrumentation en astrophysique
9 OAPD - INAF - Osservatorio Astronomico di Padova
10 LAM - Laboratoire d'Astrophysique de Marseille
11 Eberhard Karls Universität Tübingen = Eberhard Karls University of Tuebingen
12 Physikalisches Institut [Bern]
13 MTA - Hungarian Academy of Sciences
14 LMU - Ludwig Maximilian University [Munich] = Ludwig Maximilians Universität München
15 JPL - Jet Propulsion Laboratory
16 KITP - Kavli Institute for Theoretical Physics [Santa Barbara]
17 OAA - INAF - Osservatorio Astrofisico di Arcetri
18 Stockholm University
19 Institute of Astronomy [Cambridge]
20 LAGRANGE - Joseph Louis LAGRANGE
21 ESO - European Southern Observatory
22 Department of Physical Geography and Ecosystem Science [Lund]
23 UCHILE - Universidad de Chile = University of Chile [Santiago]
24 University of Arizona
25 Monash Centre for Astrophysics (MoCA)
26 ObsGE - Observatoire Astronomique de l'Université de Genève
27 IfA - Institute for Astronomy
28 Geneva Observatory
29 IPA - Institute for Particle Physics and Astrophysics [ETH Zürich]
30 ZAH - Zentrum für Astronomie der Universität Heidelberg
31 OAC - INAF - Osservatorio Astronomico di Capodimonte
32 DOTA, ONERA, Université Paris Saclay (COmUE) [Châtillon]
33 Department of Mathematics - University of Michigan
34 NOVA Optical Infrared Instrumentation Group
35 ULISBOA - Universidade de Lisboa = University of Lisbon
Th. Henning
A.-L. Maire
M. Samland
S. Desidera
M. Langlois
C. Mordasini
T. Stolker
Arthur Vigan
A. Zurlo
W. Brandner
R. Gratton
A. Isella
M. Janson
A. Matter
  • Fonction : Auteur
J. Milli
P. Pinilla
  • Fonction : Auteur
Z. Wahhaj
C. Dominik
D. Mesa
S. Peretti
  • Fonction : Auteur
L. Abe
  • Fonction : Auteur
A. Baruffolo
J.-L. Beuzit
M. Carbillet
R. Claudi
K. Dohlen
D. Fantinel
E. Giro
C. Gry
E. Hugot
F. Madec
P. Martinez
B. Salasnich
M. Turatto

Résumé

Context.Young circumstellar disks are the birthplaces of planets. Their study is of prime interest to understand the physical and chem-ical conditions under which planet formation takes place. Only very few detections of planet candidates within these disks exist, andmost of them are currently suspected to be disk features.Aims.In this context, the transition disk around the young star PDS 70 is of particular interest, due to its large gap identified in previ-ous observations, indicative of ongoing planet formation. We aim to search for the presence of an embedded young planet and searchfor disk structures that may be the result of disk–planet interactions and other evolutionary processes.Methods.We analyse new and archival near-infrared images of the transition disk PDS 70 obtained with the VLT/SPHERE,VLT/NaCo, and Gemini/NICI instruments in polarimetric differential imaging and angular differential imaging modes.Results.We detect a point source within the gap of the disk at about 195 mas (∼22 au) projected separation. The detection is con-firmed at five different epochs, in three filter bands and using different instruments. The astrometry results in an object of bound nature,with high significance. The comparison of the measured magnitudes and colours to evolutionary tracks suggests that the detection is acompanion of planetary mass. The luminosity of the detected object is consistent with that of an L-type dwarf, but its IR colours areredder, possibly indicating the presence of warm surrounding material. Further, we confirm the detection of a large gap of∼54 au insize within the disk in our scattered light images, and detect a signal from an inner disk component. We find that its spatial extent isvery likely smaller than∼17 au in radius, and its position angle is consistent with that of the outer disk. The images of the outer diskshow evidence of a complex azimuthal brightness distribution which is different at different wavelengths and may in part be explainedby Rayleigh scattering from very small grains.Conclusions.The detection of a young protoplanet within the gap of the transition disk around PDS 70 opens the door to a so far obser-vationally unexplored parameter space of planetary formation and evolution. Future observations of this system at different wavelengthsand continuing astrometry will allow us to test theoretical predictions regarding planet–disk interactions, planetary atmospheres, andevolutionary models.
Fichier principal
Vignette du fichier
aa32957-18.pdf (8.51 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Licence : Copyright (Tous droits réservés)

Dates et versions

hal-02118125 , version 1 (24-04-2023)

Licence

Paternité

Identifiants

Citer

M. Keppler, M. Benisty, A. Müller, Th. Henning, R. van Boekel, et al.. Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70. Astronomy and Astrophysics - A&A, 2018, 617, pp.A44. ⟨10.1051/0004-6361/201832957⟩. ⟨hal-02118125⟩
267 Consultations
25 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More