Physics – Optics
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....107.1022r&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 107, no. 3, p. 1022-1040
Physics
Optics
100
Astronomical Photometry, Evolution (Development), Interstellar Extinction, Light Curve, Luminous Intensity, Stellar Temperature, Supernovae, Astronomical Observatories, Cassegrain Optics, Charge Coupled Devices, Data Reduction, Numerical Analysis, Optical Filters, Reflecting Telescopes, Tables (Data)
Scientific paper
We present photometry of SN 1993J in M81 (NGC 3031) in the Johnson-Cousins UBVRI system, starting within three days of the probable time of explosion and ending 120 days later. The reddening along the line of sight to this supernova is uncertain--there is evidence for small (E(B-V) approximately equals 0.08 mag) and moderate (E(B-V) approximately equals 0.32 mag) values. For each value, we correct the observed fluxes for extinction and calculate the evolution of the sum of all optical flux, which contains roughly half of the supernova's total flux during the period of observation. We also fit the colors to a Planck function, and determine the temperature and total luminosity of the supernova for each value of reddening. A peculiar Type II supernova, SN 1993J gradually evolved spectroscopically to resemble a Type Ib in some respects. We compare its boloometric evolution with that of the prototypical Type Ib SN 1983N, and find the two to be similar.
Cox Caroline V.
Filippenko Alexei V.
Leibundgut Bruno
Paik Young
Richmond Michael William
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