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2013 (English)In: ASTROPHYS J LETT, ISSN 2041-8205, Vol. 773, no 2, L34- p.Article in journal (Refereed) Published
Abstract [en]

We report spectroscopic and imaging observations of rotational transitions of cold CO and SiO in the ejecta of SN1987A, the first such emission detected in a supernova remnant. In addition to line luminosities for the CO J = 1-0, 2-1, 6-5, and 7-6 transitions, we present upper limits for all other transitions up to J = 13-12, collectively measured from the Atacama Large Millimeter Array, the Atacama Pathfinder EXperiment, and the Herschel Spectral and Photometric Imaging REceiver. Simple models show the lines are emitted from at least 0.01 M-circle dot of CO at a temperature >14 K, confined within at most 35% of a spherical volume expanding at similar to 2000 km s(-1). Moreover, we locate the emission within 1 '' of the central debris. These observations, along with a partial observation of SiO, confirm the presence of cold molecular gas within supernova remnants and provide insight into the physical conditions and chemical processes in the ejecta. Furthermore, we demonstrate the powerful new window into supernova ejecta offered by submillimeter observations.

Place, publisher, year, edition, pages
2013. Vol. 773, no 2, L34- p.
Keyword [en]
ISM: supernova remnants, supernovae: individual (SN1987A)
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-93561DOI: 10.1088/2041-8205/773/2/L34ISI: 000322899600017OAI: diva2:647561


Funding Agencies:

National Science Foundation   NSF  AST-1211196;  Belgian Science Policy office through the ESA Prodex program;  ESO/Keele studentship;   MICINN  AYA2009-130360-C02-02;  Generalitat Valenciana  PROMETEO 104/2009 

Available from: 2013-09-11 Created: 2013-09-10 Last updated: 2013-09-11Bibliographically approved

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Fransson, Claes
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Department of AstronomyThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
Astronomy, Astrophysics and Cosmology

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