Observations of the nebulosities near SN 1987A

Direct images of SN 1987A taken during periods of good seeing at La Silla Observatory are combined with spectra to map the velocity and spatial structure of the dust and gas that surround SN 1987A. The data from December 1989 show that the supernova is embedded in a filamentary nebula of mixed gases...

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Bibliographic Details
Published inThe Astrophysical journal Vol. 362; no. 1; pp. L13 - L16
Main Authors WAMPLER, E. J, WANG, L, BAADE, D, BANSE, K, D'ODORICO, S, GOUIFFES, C, TARENGHI, M
Format Journal Article
LanguageEnglish
Published Chicago, IL University of Chicago Press 01.10.1990
Subjects
640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources
Astronomy
CHARGE-COUPLED DEVICES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COSMIC DUST
COSMIC GASES
DUSTS
Earth, ocean, space
ERUPTIVE VARIABLE STARS
Exact sciences and technology
FLUIDS
GALACTIC EVOLUTION
GALAXIES
GASES
INTERSTELLAR SPACE
Late stages of stellar evolution (including black holes)
LUMINOSITY
MAGELLANIC CLOUDS
NEBULAE
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SEMICONDUCTOR DEVICES
SPACE
SPECTRA
SPECTROSCOPY
STARS
SUPERNOVAE
ULTRAVIOLET SPECTRA
VARIABLE STARS
CCD imaging
Circumstellar dust
Filamentary nebula
Spectroscopical observation
Morphology
Extragalactic supernova
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Summary:Direct images of SN 1987A taken during periods of good seeing at La Silla Observatory are combined with spectra to map the velocity and spatial structure of the dust and gas that surround SN 1987A. The data from December 1989 show that the supernova is embedded in a filamentary nebula of mixed gases and dust that is morphologically and kinematically similar to planetary nebulae. The narrowness of the filaments, their shape, their radial velocities, and the lack of detectable expansion in the plane of the sky imply that this is a physical structure, not just the SN 1987A light curve seen reflected from a continuous sheet of background material. This inner, highly structured nebula is immersed in an outer, larger nebula which may be due to reflected light from SK -69 deg 202, the progenitor of SN 1987A. Alternatively, if it is due to reflected light from SN 1987A, it must lie in front of the supernova. 24 refs.
ISSN:0004-637X
1538-4357
DOI:10.1086/185836