RESOLVING THE PLANET-HOSTING INNER REGIONS OF THE LkCa 15 DISK

被引:53
|
作者
Thalmann, C. [1 ]
Janson, M. [2 ]
Garufi, A. [1 ,3 ,4 ]
Boccaletti, A. [5 ]
Quanz, S. P. [1 ]
Sissa, E. [6 ,7 ]
Gratton, R. [6 ]
Salter, G. [8 ]
Benisty, M. [9 ,10 ]
Bonnefoy, M. [9 ,10 ]
Chauvin, G. [9 ,10 ]
Daemgen, S. [1 ]
Desidera, S. [6 ]
Dominik, C. [11 ]
Engler, N. [1 ]
Feldt, M. [12 ]
Henning, T. [12 ]
Lagrange, A. -M. [9 ,10 ]
Langlois, M. [8 ,13 ]
Lannier, J. [9 ,10 ]
Le Coroller, H. [8 ]
Ligi, R. [8 ]
Menard, F. [9 ,10 ]
Mesa, D. [6 ]
Meyer, M. R. [1 ]
Mulders, G. D. [14 ,15 ]
Olofsson, J. [12 ,16 ,17 ]
Pinte, C. [9 ,10 ,19 ,20 ]
Schmid, H. M. [1 ]
Vigan, A. [8 ,18 ]
Zurlo, A. [8 ,21 ,22 ]
机构
[1] ETH, Inst Astron, Wolfgang Pauli Str 27, CH-8093 Zurich, Switzerland
[2] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden
[3] Univ Autononoma Madrid, Fac Ciencias, Dept Fis Teor, Modulo 15,Campus Cantoblanco, E-28049 Madrid, Spain
[4] Unidad Asociada CAB UAM, Madrid, Spain
[5] Univ Paris 06, Univ Paris Diderot, Sorbonne Paris Cite, LESIA,Observ Paris,CNRS,PSL Res Univ,Sorbonne Uni, 5 Pl Jules Janssen, F-92195 Meudon, France
[6] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy
[7] Univ Padua, Dipartimento Fis & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy
[8] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France
[9] Univ Grenoble Alpes, IPAG, F-38000 Grenoble, France
[10] CNRS, IPAG, F-38000 Grenoble, France
[11] Univ Amsterdam, Anton Pannekoek Inst, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands
[12] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
[13] Univ Lyon 1, CNRS, CRAL, UMR 5574, 9 Ave Charles Andre, F-69561 St Genis Laval, France
[14] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA
[15] NASA Nexus Exoplanet Syst Sci, Earths Other Solar Syst Team, Tucson, AZ USA
[16] Univ Valparaiso, Fac Ciencias, Inst Fis & Astron, Av Gran Bretana 1111, Valparaiso, Chile
[17] Univ Valparaiso, ICM Nucleus Protoplanetary Disks, Av Gran Bretana 1111, Valparaiso, Chile
[18] European Southern Observ, Alonso de Cordova 3107, Santiago, Chile
[19] CNRS INSU UMI 3386, UMI FCA, Paris, France
[20] Univ Chile, Dept Astron, Santiago, Chile
[21] Univ Diego Portales, Fac Ingn, Nucleo Astron, Av Ejercito 441, Santiago, Chile
[22] Univ Chile, Dept Astron, Millennium Nucleus Protoplanetary Disk, Casilla 36-D, Santiago, Chile
关键词
circumstellar matter; planets and satellites: formation; protoplanetary disks; stars: individual (LkCa 15); stars: pre-main sequence; techniques: high angular resolution; PROTOPLANETARY DISK; SCATTERED-LIGHT; IMAGING POLARIMETRY; SPHERE; TAURI; TRANSITION; EXOPLANETS; STARS; VIEW;
D O I
10.3847/2041-8205/828/2/L17
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
LkCa 15 hosts a pre-transitional disk as well as at least one accreting protoplanet orbiting in its gap. Previous disk observations have focused mainly on the outer disk, which is cleared inward of similar to 50 au. The planet candidates, on the other hand, reside at orbital radii around 15 au, where disk observations have been unreliable until recently. Here, we present new J-band imaging polarimetry of LkCa 15 with SPHERE IRDIS, yielding the most accurate and detailed scattered-light images of the disk to date down to the planet-hosting inner regions. We find what appear to be persistent asymmetric structures in the scattering material at the location of the planet candidates, which could be responsible at least for parts of the signals measured with sparse-aperture masking. These images further allow us to trace the gap edge in scattered light at all position angles and search the inner and outer disks for morphological substructure. The outer disk appears smooth with slight azimuthal variations in polarized surface brightness, which may be due to shadowing from the inner disk or a two-peaked polarized phase function. We find that the near-side gap edge revealed by polarimetry matches the sharp crescent seen in previous ADI imaging very well. Finally, the ratio of polarized disk to stellar flux is more than six times larger in the J-band than in the RI bands.
引用
收藏
页数:6
相关论文
共 50 条
  • [1] The Chemical Inventory of the Planet-hosting Disk PDS 70
    Facchini, Stefano
    Teague, Richard
    Bae, Jaehan
    Benisty, Myriam
    Keppler, Miriam
    Isella, Andrea
    ASTRONOMICAL JOURNAL, 2021, 162 (03):
  • [2] Abundance analysis of planet-hosting and debris-disk stars
    Rojas, M.
    Drake, N. A.
    Chavero, C.
    Pereira, C. B.
    Kholtygin, A. F.
    Cahuasqui, J. A.
    PUTTING A STARS INTO CONTEXT: EVOLUTION, ENVIRONMENT, AND RELATED STARS, 2014, : 58 - 62
  • [3] The rotation of planet-hosting stars
    Sibony, Yves
    Helled, Ravit
    Feldmann, Robert
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 513 (02) : 2057 - 2075
  • [4] Mapping the Vertical Gas Structure of the Planet-hosting PDS 70 Disk
    Law, Charles
    Benisty, Myriam
    Facchini, Stefano
    Teague, Richard
    Bae, Jaehan
    Isella, Andrea
    Kamp, Inga
    Oeberg, Karin
    Portilla-Revelo, Bayron
    Rampinelli, Luna
    ASTROPHYSICAL JOURNAL, 2024, 964 (02):
  • [5] An inherited complex organic molecule reservoir in a warm planet-hosting disk
    Alice S. Booth
    Catherine Walsh
    Jeroen Terwisscha van Scheltinga
    Ewine F. van Dishoeck
    John D. Ilee
    Michiel R. Hogerheijde
    Mihkel Kama
    Hideko Nomura
    Nature Astronomy, 2021, 5 : 684 - 690
  • [6] Abundance Pattern Analysis of Planet-hosting and Debris-disk Stars
    Rojas, M.
    Drake, N. A.
    Chavero, C.
    Pereira, C. B.
    Kholtygin, A. F.
    Cahuasqui, J. A.
    TENTH PACIFIC RIM CONFERENCE ON STELLAR ASTROPHYSICS, 2014, 482 : 13 - 18
  • [7] An inherited complex organic molecule reservoir in a warm planet-hosting disk
    Booth, Alice S.
    Walsh, Catherine
    Terwisscha van Scheltinga, Jeroen
    van Dishoeck, Ewine F.
    Ilee, John D.
    Hogerheijde, Michiel R.
    Kama, Mihkel
    Nomura, Hideko
    NATURE ASTRONOMY, 2021, 5 (07) : 684 - 690
  • [8] JWST/NIRCam Coronagraphy of the Young Planet-hosting Debris Disk AU Microscopii
    Lawson, Kellen
    Schlieder, Joshua E.
    Leisenring, Jarron M.
    Bogat, Ell
    Beichman, Charles A.
    Bryden, Geoffrey
    Gaspar, Andras
    Groff, Tyler D.
    Mcelwain, Michael W.
    Meyer, Michael R.
    Barclay, Thomas
    Calissendorff, Per
    De Furio, Matthew
    Ygouf, Marie
    Boccaletti, Anthony
    Greene, Thomas P.
    Krist, John
    Plavchan, Peter
    Rieke, Marcia J.
    Roellig, Thomas L.
    Stansberry, John
    Wisniewski, John P.
    Young, Erick T.
    ASTRONOMICAL JOURNAL, 2023, 166 (04):
  • [9] A RESOLVED DEBRIS DISK AROUND THE CANDIDATE PLANET-HOSTING STAR HD 95086
    Moor, A.
    Abraham, P.
    Kospal, A.
    Szabo, Gy. M.
    Apai, D.
    Balog, Z.
    Csengeri, T.
    Grady, C.
    Henning, Th.
    Juhasz, A.
    Kiss, Cs.
    Pascucci, I.
    Szulagyi, J.
    Vavrek, R.
    ASTROPHYSICAL JOURNAL LETTERS, 2013, 775 (02)
  • [10] Revising the ages of planet-hosting stars
    Bonfanti, A.
    Ortolani, S.
    Piotto, G.
    Nascimbeni, V.
    ASTRONOMY & ASTROPHYSICS, 2015, 575