Speckle interferometry of SN 1987A - Final measurements

Details Speckle interferometry of SN 1987A - Final measurements Speckle interferometry of SN 1987A - Final measurements

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...358..266n&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 358, July 20, 1990, p. 266, 267.

Astronomy and Astrophysics

Astrophysics

7

Dimensional Measurement, Emission Spectra, Speckle Interferometry, Supernova 1987A, Angular Velocity, Diameters, H Alpha Line

Scientific paper

Further speckle interferometric measurements are presented of the angular diameter of SN 1987A up to 573 days after explosion of the supernova. These measurements cover the epoch of dust formation in the supernova. Most measurements were made in the emission line of H-alpha. Further observations will not be possible due to the faintness of SN 1987A. The results indicate a linear increase in the angular diameter at H-alpha with time, corresponding to a velocity of 2825 km/s. It was not possible to confirm or exclude the existence of asymmetry in the H-alpha image of the supernova.

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