Absolute fluxes for supernova 1987A. II - Days 51 to 157

Details Absolute fluxes for supernova 1987A. II - Days 51 to 157 Absolute fluxes for supernova 1987A. II - Days 51 to 157

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...220..153h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 220, no. 1-2, Aug. 1989, p. 153-166.

Astronomy and Astrophysics

Astrophysics

15

Magellanic Clouds, Supernova 1987A, Astronomical Photometry, Calcium, Emission Spectra, Light Curve, Line Spectra, Spectral Line Width, Stellar Spectrophotometry

Scientific paper

The 0.61-m Bochum telescope was used to obtain optical spectrophotometric fluxes for SN 1987A from day 53 to day 157 after the explosion. The evolution of the line spectrum is found to be characterized by remarkable constancy in time, with the exception of some lines, including the Balmer lines. The disappearance of H-beta and H-gamma are interpreted as being related to the H-alpha Bochum event and to be due to the pervasion of radioactively heated hydrogen throughout the photosphere. Results are presented for absorption through equivalent widths for H-alpha, Ca II, and Na I-D, as well as for integral line fluxes for the P Cyg emissions of Ca II and H-alpha and for the forbidden Ca II emission line at 7300 A.

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