A planetesimal orbiting within the debris disc around a white dwarf star.

Manser, Christopher J; Gänsicke, Boris T; Eggl, Siegfried; Hollands, Mark; Izquierdo, Paula; Koester, Detlev; Landstreet, John D; Lyra, Wladimir; Marsh, Thomas R; Meru, Farzana; Mustill, Alexander J; Rodríguez-Gil, Pablo; Toloza, Odette; Veras, Dimitri; Wilson, David J; Burleigh, Matthew R; Davies, Melvyn B; Farihi, Jay; Gentile Fusillo, Nicola; de Martino, Domitilla; Parsons, Steven G; Quirrenbach, Andreas; Raddi, Roberto; Reffert, Sabine; Del Santo, Melania; Schreiber, Matthias R; Silvotti, Roberto; Toonen, Silvia; Villaver, Eva; Wyatt, Mark; Xu, Siyi; Portegies Zwart, Simon

Manser, Christopher J; Gänsicke, Boris T; Eggl, Siegfried; Hollands, Mark; Izquierdo, Paula; Koester, Detlev; Landstreet, John D; Lyra, Wladimir; Marsh, Thomas R; Meru, Farzana; Mustill, Alexander J; Rodríguez-Gil, Pablo; Toloza, Odette; Veras, Dimitri; Wilson, David J; Burleigh, Matthew R; Davies, Melvyn B; Farihi, Jay; Gentile Fusillo, Nicola; de Martino, Domitilla; Parsons, Steven G; Quirrenbach, Andreas; Raddi, Roberto; Reffert, Sabine; Del Santo, Melania; Schreiber, Matthias R; Silvotti, Roberto; Toonen, Silvia; Villaver, Eva; Wyatt, Mark; Xu, Siyi; Portegies Zwart, Simon.

Afiliación

Manser CJ; Department of Physics, University of Warwick, Coventry CV4 7AL, UK. c.j.manser92@googlemail.com.
Gänsicke BT; Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
Eggl S; Centre for Exoplanets and Habitability, University of Warwick, Coventry CV4 7AL, UK.
Hollands M; Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA.
Izquierdo P; Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
Koester D; Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain.
Landstreet JD; Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain.
Lyra W; Institut für Theoretische Physik und Astrophysik, Universität Kiel, 24098 Kiel, Germany.
Marsh TR; Department of Physics and Astronomy, The University of Western Ontario, London, Ontario, N6A 3K7, Canada.
Meru F; Armagh Observatory and Planetarium, College Hill, Armagh, Co. Armagh BT61 9DG, UK.
Mustill AJ; Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA.
Rodríguez-Gil P; Department of Physics and Astronomy, California State University, Northridge, 18111 Nordhoff St., Northridge, CA 91330, USA.
Toloza O; Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
Veras D; Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
Wilson DJ; Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, Box 43, SE-221 00 Lund, Sweden.
Burleigh MR; Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain.
Davies MB; Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain.
Farihi J; Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
Gentile Fusillo N; Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
de Martino D; Centre for Exoplanets and Habitability, University of Warwick, Coventry CV4 7AL, UK.
Parsons SG; Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
Quirrenbach A; McDonald Observatory, University of Texas at Austin, Austin, TX 78712, USA.
Raddi R; Department of Physics and Astronomy, Leicester Institute of Space and Earth Observation, University of Leicester, University Road, Leicester LE1 7RH, UK.
Reffert S; Lund Observatory, Department of Astronomy and Theoretical Physics, Lund University, Box 43, SE-221 00 Lund, Sweden.
Del Santo M; Physics and Astronomy, University College London, London WC1E 6BT, UK.
Schreiber MR; Department of Physics, University of Warwick, Coventry CV4 7AL, UK.
Silvotti R; Osservatorio Astronomico di Capodimonte, National Institute for Astrophysics, Via Moiarello 16, 80131 Napoli, Italy.
Toonen S; Department of Physics and Astronomy, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK.
Villaver E; Landessternwarte, Zentrum für Astronomie der Universität Heidelberg, Königstuhl 12, 69117 Heidelberg, Germany.
Wyatt M; Dr. Karl Remeis-Sternwarte, Astronomisches Institut der Universität Erlangen-Nürnberg, Sternwartestr. 7, 96049, Bamberg, Germany.
Xu S; Landessternwarte, Zentrum für Astronomie der Universität Heidelberg, Königstuhl 12, 69117 Heidelberg, Germany.
Portegies Zwart S; National Institute for Astrophysics/Institute of Space Astrophysics and Cosmic Physics, via Ugo La Malfa 153, 90146, Palermo, Italy.

Science ; 364(6435): 66-69, 2019 04 05.

Article en En | MEDLINE | ID: mdl-30948547

ABSTRACT

ABSTRACT

Many white dwarf stars show signs of having accreted smaller bodies, implying that they may host planetary systems. A small number of these systems contain gaseous debris discs, visible through emission lines. We report a stable 123.4-minute periodic variation in the strength and shape of the Ca ii emission line profiles originating from the debris disc around the white dwarf SDSS J122859.93+104032.9. We interpret this short-period signal as the signature of a solid-body planetesimal held together by its internal strength.

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Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Science Año: 2019 Tipo del documento: Article País de afiliación: Reino Unido