The Destruction of the Circumstellar Ring of SN 1987A

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dc.contributor.utaustinauthorWheeler, J. Craigen_US
dc.creatorFransson, Claesen_US
dc.creatorLarsson, Josefinen_US
dc.creatorMigotto, Katiaen_US
dc.creatorPesce, Dominicen_US
dc.creatorChallis, Peteren_US
dc.creatorChevalier, Roger A.en_US
dc.creatorFrance, Kevinen_US
dc.creatorKirshner, Robert P.en_US
dc.creatorLeibundgut, Brunoen_US
dc.creatorLundqvist, Peteren_US
dc.creatorMcCray, Richarden_US
dc.creatorSpyromilio, Jasonen_US
dc.creatorTaddia, Francescoen_US
dc.creatorJerkstrand, Andersen_US
dc.creatorMattila, Seppoen_US
dc.creatorSmith, Nathanen_US
dc.creatorSollerman, Jesperen_US
dc.creatorWheeler, J. Craigen_US
dc.creatorCrotts, Arlinen_US
dc.creatorGarnavich, Peteren_US
dc.creatorHeng, Kevinen_US
dc.creatorLawrence, Stephen S.en_US
dc.creatorPanagia, Ninoen_US
dc.creatorPun, Chun S. J.en_US
dc.creatorSonneborn, Georgeen_US
dc.creatorSugerman, Benen_US
dc.date.accessioned2016-10-28T19:37:27Z
dc.date.available2016-10-28T19:37:27Z
dc.date.issued2015-06en_US
dc.description.abstractWe present imaging and spectroscopic observations with Hubble Space Telescope and Very Large Telescope of the ring of SN 1987A from 1994 to 2014. After an almost exponential increase of the shocked emission from the hotspots up to day similar to 8000 (similar to 2009), both this and the unshocked emission are now fading. From the radial positions of the hotspots we see an acceleration of these up to 500-1000 km s(-1), consistent with the highest spectroscopic shock velocities from the radiative shocks. In the most recent observations (2013 and 2014), we find several new hotspots outside the inner ring, excited by either X-rays from the shocks or by direct shock interaction. All of these observations indicate that the interaction with the supernova ejecta is now gradually dissolving the hotspots. We predict, based on the observed decay, that the inner ring will be destroyed by similar to 2025.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipSwedish Research Councilen_US
dc.description.sponsorshipSwedish National Space Board, NASA NNX12AF90Gen_US
dc.description.sponsorshipNSF AST-1109801en_US
dc.description.sponsorshipNASA through a grant from the Space Telescope Science Instituteen_US
dc.description.sponsorshipESO Programmes 080.D-0727, 082.D-0273, 086.D-0713, 088.D-0638, 090.D-645, 092.D0119, 094.D-0505en_US
dc.identifierdoi:10.15781/T27D2Q977
dc.identifier.citationFransson, Claes, Josefin Larsson, Katia Migotto, Dominic Pesce, Peter Challis, Roger A. Chevalier, Kevin France et al. "The Destruction of the Circumstellar Ring of SN 1987A." arXiv preprint arXiv:1505.06669 (Jun., 2015).en_US
dc.identifier.doi10.1088/2041-8205/806/1/l19en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/2152/43066
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journal Lettersen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectcircumstellar matteren_US
dc.subjectshock wavesen_US
dc.subjectsupernovae: individual (sn 1987a)en_US
dc.subjectsupernova 1987aen_US
dc.subjectradio remnanten_US
dc.subjectspectroscopyen_US
dc.subjectsimulationsen_US
dc.subjectevolutionen_US
dc.subjectsn-1987aen_US
dc.subjectnebulaen_US
dc.subjectejectaen_US
dc.subjectshocken_US
dc.subjectastronomy & astrophysicsen_US
dc.titleThe Destruction of the Circumstellar Ring of SN 1987Aen_US
dc.typeArticleen_US

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