Faint object camera observations of the shape and expansion of SN 1987A

Details Faint object camera observations of the shape and expansion of SN 1987A Faint object camera observations of the shape and expansion of SN 1987A

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...403..736j&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 403, no. 2, p. 736-742.

Astronomy and Astrophysics

Astronomy

11

Faint Object Camera, Supernova 1987A, Astronomical Photometry, Cosmic Dust, Hubble Space Telescope, Spaceborne Astronomy, Stellar Envelopes

Scientific paper

A comparison is made between HST Faint-Object Camera visible and near-IR imagery of SN 1987A obtained 1754 days after outburst and those obtained after 1278 days. The SN has dimmed by a factor of 0.35 +/- 0.04 between the two observations; this corresponds to an exponential decay time 450 +/- 50 days. Detailed fits to image profiles show that this SN's envelope is heavily limb-darkened, and well-characterized by a surface brightness profile that decreases with angular radius. The apparent size of the envelope also varies significantly with wavelength.

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