A Stubbornly Large Mass of Cold Dust in the Ejecta of Supernova 1987A

  title={A Stubbornly Large Mass of Cold Dust in the Ejecta of Supernova 1987A},
  author={Mikako Matsuura and Eli Dwek and Michael J. Barlow and Brian L. Babler and Maarten Baes and Margaret Meixner and Jos{\'e} Cernicharo and Geoffrey C. Clayton and Loretta Dunne and Claes Fransson and Jacopo Fritz and Walter Gear and Haley L. Gomez and Martin A. T. Groenewegen and Remy Indebetouw and R. J. Ivison and Anders Jerkstrand and Vianney Lebouteiller and Tanya L. Lim and Peter Lundqvist and Chris Pearson and Julia Roman-Duval and Pierre Royer and Lister Staveley-Smith and B. M. Swinyard P.A.M. van Hoof and Jacco Th. van Loon and J. Verstappen and Roger Wesson and Giovanna Zanardo and Joris Blommaert and Leen Decin and William T. Reach and George Sonneborn and Griet Van de Steene and Jeremy A. Yates Ucl and NASA's Goddard Space Flight Center and University of Wisconsin and Universiteit Gent and Space Telescope Sceince Institute and CSIC-INTA and Louisiana State University and University of Canterbury and Institute for Astronomy and University of Edinburgh and Stockholm University and Cardiff University and Koninklijke Sterrenwacht van Belgie and University of Virginia and National Radio Astronomy Observatory and Eso - Garching and Queen's University of Belfast and Saclay and Rutherford Appleton Laboratory and Katholieke Universiteit Leuven and Univ. of Western Australia and Caastro and Keele University and Kapteyn Astronomical Institute and European Southern Observatory and Santiago Vrije Universiteit Brussel and Nasa Ames Research Center},
  journal={The Astrophysical Journal},
We present new Herschel photometric and spectroscopic observations of Supernova 1987A, carried out in 2012. Our dedicated photometric measurements provide new 70 micron data and improved imaging quality at 100 and 160 micron compared to previous observations in 2010. Our Herschel spectra show only weak CO line emission, and provide an upper limit for the 63 micron [O I] line flux, eliminating the possibility that line contaminations distort the previously estimated dust mass. The far-infrared… Expand

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