Earliest photometry of SN 1987A

Details Earliest photometry of SN 1987A Earliest photometry of SN 1987A

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...256..447w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 256, no. 2, p. 447-451.

Astronomy and Astrophysics

Astrophysics

6

Astronomical Photometry, Supernova 1987A, Data Reduction, Light Curve, Stellar Color, Stellar Magnitude

Scientific paper

Seven wide-field photographic exposures, obtained of the LMC field on 1987 Feb. 22 - 24 in Australia, and including the earliest recorded images of SN 1987A, have been scanned and photometrically calibrated by means of bright field stars. Accurate V-magnitudes of SN 1987A are derived by means of fixed-diaphragm, color adjusted, integrated fluxes; on Feb. 23 it is found to be 0.2 - 0.8 mag brighter than indicated by earlier estimates, based on image diameters alone. The measurements now agree rather better with the theoretical light curves, e.g. those by Woosley (1988).

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