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 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:
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FileName Lrecl Records Explanations
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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
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Byte-per-byte Description of file: table3
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Bytes Format Units Label Explanations
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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
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Origin: AAS CD-ROM series, Volume 2, 1994
(End) Lee Brotzman [ADS] 08-May-1994, Patricia Bauer [CDS] 24-Oct-1994