SN 1987A in the LMC. II - Optical photometry at Cerro Tololo

Details SN 1987A in the LMC. II - Optical photometry at Cerro Tololo SN 1987A in the LMC. II - Optical photometry at Cerro Tololo

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96.1864s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 96, Dec. 1988, p. 1864-1873.

Other

29

Astronomical Photometry, Magellanic Clouds, Supernova 1987A, Ubv Spectra, Bolometers, Light Curve, Stellar Color

Scientific paper

Optical UBV (RI)KC photometry of SN 1987A in the Large Magellanic Cloud is presented for days 188-477 since core collapse. The luminosity evolution has been remarkably exponential over this time period. There are large systematic differences of up to 0.3 mag between the CTIO photometry and other published photometry due to the presence of strong emission lines during this exponential-decline phase. A bolometric light curve based on optical and infrared data has been constructed. The bolometric luminosity has declined with an e-folding time of 100.5 days, roughly consistent with the e-folding time of 111.3 days for the radioactive decay of Co-56. Discrepancies of up to 0.2 mag in the bolometric magnitude are due to differences in the various photometric datasets and interpolation schemes.

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