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J/AJ/107/1453                           Light curves of SN 1993J (Benson+, 1994)

Light curves of SN 1993J from the Keck Northeast Astronomy Consortium BENSON P.J., HERBST W., SALZER J.J., VINTON G., HANSON G.J., RATCLIFF S.J., WINKLER P.F., ELMEGREEN D.M., CHROMEY F., STROM C., BALONEK T.J., ELMEGREEN B.G. <Astron. J. 107, 1453 (1994)> =1994AJ....107.1453B (SIMBAD/NED Reference)
Abstract: We present BVRI photometry of SN 1993J, as well as data on its likely progenitor. The post-explosion data were obtained with CCDs attached to telescopes (aperture size 0.4 to 0.6m) on the campuses of the Keck Northeast Astronomy Consortium members by the authors and their students. Our data show that the supernova rose to a second maximum in all colors and has declined steadily since then. This is unlike either the plateau or linear version of the typical Type II light curve. Except for the initial peak, the light curve bears a strong resemblance to SNe Ib, supporting suggestions that this is a Type IIb event. The position of the supernova, as measured on our images, agrees to within 0.1arcsec with the position of a faint, apparently stellar image on a CCD R image taken with the 0.9m telescope at KPNO on 1992 October 2. The likely progenitor is also visible on B and I frames taken with the 0.9m Burrell Schmidt telescope of the Warner and Swasey Observatory, Case Western Reserve University, at KPNO in 1993 February. Examination of a photograph of M81 taken on 1993 March 27.1 (UT) by an amateur astronomer allows us to set a constraint on its brightness at that time. Addresses: Benson P.J. Whitin Observatory, Wellesley College, Wellesley, Massachusetts 02181 Herbst W., Salzer J.J. and Vinton G. , Van Vleck Observatory, Wesleyan University, Middletown, Connecticut 06457 Hanson G.J., Ratcliff S.J. Winkler P.F. Middlebury College, Middlebury, Vermont 05753 Elmegreen D.M. Chromey F. Vassar College, Poughkeepsie, New York 12601 Strom C. and Balonek T.J. Foggy Bottom Observatory, Colgate University, Hamilton, New York 13346 Elmegreen B.G. IBM Research Division, T. J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3 55 135 KNAC photometry of SN 1993J table3.tex 67 219 LaTeX version of table3 aj_pt.sty 77 410 aj_pt.sty AASTeX style file
Byte-by-byte Description of file: table3
Bytes Format Units Label Explanations
1- 6 A6 --- Obs Observation date (UT) 9- 18 F10.2 d JD Julian Date 21- 25 F5.2 mag Bmag ? B band magnitude 27- 31 F5.2 mag Vmag ? V band magnitude 33- 37 F5.2 mag Rmag R band magnitude 39- 43 F5.2 mag Imag I band magnitude 46- 55 A10 --- Site Observation site
Origin: AAS CD-ROM series, Volume 2, 1994
(End) Lee Brotzman [ADS] 08-May-1994, Patricia Bauer [CDS] 24-Oct-1994
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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