The Distance of the Soft Gamma Repeater SGR 1806−20 | Zendy

S. Corbel | Zendy; P. Wallyn | Zendy; T. M. Dame | Zendy; Ph. Durouchoux | Zendy; W. A. Mahoney | Zendy; O. Vilhu | Zendy; J. E. Grindlay | Zendy

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The Distance of the Soft Gamma Repeater SGR 1806−20

Author(s) -

S. Corbel,

P. Wallyn,

T. M. Dame,

Ph. Durouchoux,

W. A. Mahoney,

O. Vilhu,

J. E. Grindlay

Publication year - 1997

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/303807

Subject(s) - physics , astrophysics , repeater (horology) , pulsar , supernova , galaxy , supernova remnant , astronomy , telescope , line of sight , line (geometry) , near earth supernova , molecular cloud , star (game theory) , stars , mechanical engineering , coupling (piping) , engineering , geometry , mathematics

We present CO(J=1-0) observations in the direction of the Soft Gamma RepeaterSGR 1806-20 with the SEST telescope. We detected several molecular clouds, andwe discuss in this paper the implications of these observations for thedistance to the X-ray counterpart AX 1805.7-2025, the supernova remnantG10.0-0.3 and the very luminous O9-B2 star detected in the line of sight. Thedistance of SGR 1806-20 is estimated to be 14.5 +/- 1.4 kpc and this Soft GammaRepeater is very likely associated with one of the brightest HII regions in theGalaxy, W31. The large size of G10.0-0.3 (25 x 38 pc) for a young supernovaremnant possibly powered by a central pulsar (AX 1805.7-2025) indicates thatG10.0-0.3 could be expanding in the very low density region produced by thewind of the blue star.Comment: 20 pages, four postscript figures, LaTeX. To appear in Astrophysical Journal, 1997, in pres

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