Possible binary star progenitor for SN1987A

Details Possible binary star progenitor for SN1987A Possible binary star progenitor for SN1987A

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.327...36w&link_type=abstract

Nature (ISSN 0028-0836), vol. 327, May 7, 1987, p. 36-38.

Astronomy and Astrophysics

Astronomy

49

Astrometry, Binary Stars, Magellanic Clouds, Nebulae, Stellar Evolution, Supernova 1987A, Companion Stars, Faint Objects, Iue

Scientific paper

Accurate optical astrometry gives a position (B1950.0) for the Large Magellanic Cloud supernova, SN 1987A, relative to the FK 4 system as right ascension, RA = 05h 35min 49.95 s±0.039 s, declination δ = -69°17arcmin57.9arcsec±0.27arcsec. Differential astrometry carried out on prime-focus plates taken with the AAT indicates that the component, star 1, of Sanduleak's star Sk -69202 is within 0.05±0.13 arc s of the supernova. The authors conclude that the progenitor of SN 1987A was star 1 or a fainter binary companion.

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