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Carbon monoxide in the cold debris of Supernova 1987A

Kamenetzky, J; McCray, R; Indebetouw, R; Barlow, MJ; Matsuura, M; Baes, M; Blommaert, JADL; ... Zanardo, G; + view all (2013) Carbon monoxide in the cold debris of Supernova 1987A. The Astrophysical Journal Letters , 773 (2) , Article L34. 10.1088/2041-8205/773/2/L34. Green open access

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Abstract

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 ☉ of CO at a temperature >14 K, confined within at most 35% of a spherical volume expanding at ~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.

Type: Article
Title: Carbon monoxide in the cold debris of Supernova 1987A
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/2041-8205/773/2/L34
Publisher version: https://doi.org/10.1088/2041-8205/773/2/L34
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: ISM: supernova remnants; supernovae: individual (SN1987A)
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10093787
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