TY - JOUR
T1 - A planetesimal orbiting within the debris disc around a white dwarf star
AU - Manser, Christopher J.
AU - Gänsicke, Boris T.
AU - Eggl, Siegfried
AU - Hollands, Mark
AU - Izquierdo, Paula
AU - Koester, Detlev
AU - Landstreet, John D.
AU - Lyra, Wladimir
AU - Marsh, Thomas R.
AU - Meru, Farzana
AU - Mustill, Alexander J.
AU - Rodríguez-Gil, Pablo
AU - Toloza, Odette
AU - Veras, Dimitri
AU - Wilson, David J.
AU - Burleigh, Matthew R.
AU - Davies, Melvyn B.
AU - Farihi, Jay
AU - Fusillo, Nicola Gentile
AU - de Martino, Domitilla
AU - Parsons, Steven G.
AU - Quirrenbach, Andreas
AU - Raddi, Roberto
AU - Reffert, Sabine
AU - Santo, Melania Del
AU - Schreiber, Matthias R.
AU - Silvotti, Roberto
AU - Toonen, Silvia
AU - Villaver, Eva
AU - Wyatt, Mark
AU - Xu, Siyi
AU - Zwart, Simon Portegies
N1 - This research has been carried out with telescope time awarded by the CCI International Time Programme. The research leading to these results has received funding from the European Research Council under the European Union\u2019s Seventh Framework Programme (FP/ 2007-2013)/ERC grant agreement 320964 (WDTracer). T.R.M. acknowledges support from STFC (ST/P000495/1). J.D.L acknowledges the funding support of the Natural Sciences and Engineering Research Council of Canada. D.V. acknowledges the support of the STFC via an Ernest Rutherford Fellowship (grant ST/ P003850/1). M.R.S. is thankful for support from Fondecyt (1141269). A.J.M. and M.B.D. acknowledge the support of KAW project grant 2014.0017. A.J.M. also acknowledges the support of VR grant 2017-04945. O.T. was partially supported by a Leverhulme Trust Research Project Grant. F.M. acknowledges support from the Royal Society Dorothy Hodgkin Fellowship. P.R.-G. acknowledges support provided by the Spanish Ministry of Economy, Industry and Competitiveness through grant AYA-2017-83383-P, which is partly funded by the European Regional Development Fund of the European Union. This research was supported by the Jet Propulsion Laboratory through the California Institute of Technology postdoctoral fellowship program, under a contract with the National Aeronautics and Space Administration. This work is based on observations made with the Gran Telescopio Canarias (GTC), installed in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrof\u00EDsica de Canarias, in La Palma, Canary Islands. This work has made use of data from the European Space Agency (ESA) mission Gaia (www.cosmos.esa.int/ gaia), processed by the Gaia Data Processing and Analysis Consortium [(DPAC), www.cosmos.esa.int/web/gaia/dpac/ consortium]. Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. Based on observations made with European Southern Observatory (ESO) Telescopes at the La Silla Paranal Observatory under program IDs: 595.C-0650.
PY - 2019/4/5
Y1 - 2019/4/5
N2 - 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.
AB - 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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U2 - 10.1126/science.aat5330
DO - 10.1126/science.aat5330
M3 - Article
C2 - 30948547
AN - SCOPUS:85064315993
SN - 0036-8075
VL - 364
SP - 66
EP - 69
JO - Science
JF - Science
IS - 6435
ER -