Further observations of the light echoes from SN 1987 A

Detal, Alain; Surdej, Jean; Hutsemekers, Damien; Remy, M.; van Drom, E.

Reference : Further observations of the light echoes from SN 1987 A


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/20725

Title :	Further observations of the light echoes from SN 1987 A
Language :	English
Author, co-author :	Detal, Alain [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
	Surdej, Jean [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Hutsemekers, Damien [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Remy, M. [ > > ]
	van Drom, E. [European Southern Observatory, Santiago, Chile]
Publication date :	1-Mar-1990
Journal title :	Astronomy and Astrophysics
Publisher :	EDP Sciences
Volume :	229
Pages :	427-430
Peer reviewed :	Yes (verified by ORBi)
Audience :	International
ISSN :	0004-6361
e-ISSN :	1432-0746
City :	Les Ulis
Country :	France
Keywords :	[en] INTERSTELLAR MATTER ; LIGHT SCATTERING ; SUPERNOVA 1987A ; ECHOES ; GALACTIC RADIATION ; MAGELLANIC CLOUDS
Abstract :	[en] Further direct observations of the light echoes from SN 1987 A were obtained on November 12 1988 with the 3.6-m telescope and EFOSC at ESO. In agreement with predictions made from earlier observations, the radii of the two light rings are measured to be 43.3 and 72.5 arcsec. However, a noticeable diaplacement of the center of the outer ring by 2.6 arcsec to the NE from the SN position is also reported. Application of the model of planar-like sheets of material located between the SN and the observer leads to improved results.
Permalink :	http://hdl.handle.net/2268/20725
Other URL :	http://adsabs.harvard.edu/abs/1990A%26A...229..427D
Mentions required by the publisher for OA :	The authors thank EDP Sciences for their deposit authorization

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