Journal article, 2013

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.


sn 1987a


ISM: supernova remnants

supernovae: individual (SN1987A)




3-dimensional structure




J. Kamenetzky

University of Colorado at Boulder

R. McCray

University of Colorado at Boulder

R. Indebetouw

National Radio Astronomy Observatory

University of Virginia

M. J. Barlow

University College London (UCL)

M. Matsuura

University College London (UCL)

Maarten Baes

Ghent university

Jadl Blommaert

Vrije Universiteit Brussel (VUB)

KU Leuven

A. Bolatto

University of Maryland

L. Decin

KU Leuven

L. Dunne

University of Canterbury

C. Fransson

Stockholm University

J. Glenn

University of Colorado at Boulder

H. L. Gomez

Cardiff University

M. A. T. Groenewegen

Royal Observatory of Belgium

R. Hopwood

Imperial College London

R. Kirshner

The Harvard College Observatory

M. Lakicevic

Keele University

J. M. Marcaide

Universitat de Valencia

Ivan Marti-Vidal

Chalmers, Earth and Space Sciences, Onsala Space Observatory

M. Meixner

Space Telescope Science Institute (STScI)

P. Royer

KU Leuven

A. Soderberg

The Harvard College Observatory

G. Sonneborn

NASA Goddard Space Flight Center

L. Staveley-Smith

University of Western Australia

B. M. Swinyard

University College London (UCL)

G. Van de Steene

Royal Observatory of Belgium

P. A. M. van Hoof

Royal Observatory of Belgium

J. T. van Loon

Keele University

J. A. Yates

University College London (UCL)

G. Zanardo

University of Western Australia

Astrophysical Journal Letters

2041-8205 (ISSN) 2041-8213 (eISSN)

Vol. 773 2 L34

Subject Categories

Astronomy, Astrophysics and Cosmology



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