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J/AJ/107/1022                     UBVRI photometry of SN 1993J (Richmond+, 1994)

UBVRI photometry of SN 1993J in M81: the first 120 days RICHMOND M.W., TREFFERS R.R., FILIPPENKO A.V., PAIK Y., LEIBUNDGUT B., SCHULMAN E., COX C.V. <Astron. J. 107, 1022 (1994)> =1994AJ....107.1022R (SIMBAD/NED Reference)
Abstract: 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)∼0.08mag] and moderate [E(B-V)∼0.32mag] 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 bolometric evolution with that of the prototypical Type Ib SN 1983N, and find the two to be similar. Addresses: Richmond M.W. Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08544 Treffers R.R. Filippenko A.V. Paik Y. Department of Astronomy, University of California, Berkeley, California 94720 Leibundgut B. European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-8046 Garching bei Muenchen, Germany Schulman E. Cox C.V. Department of Astronomy, University of Michigan, Ann Arbor, Michigan 48109-1090 File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table.tex 153 529 LaTeX version of tables table2 62 86 Leuschner 76-cm observations of SN 1993J table3 62 47 Leuschner 50-cm observations of SN 1993J table7 62 50 La Palma observations of SN 1993J table14 54 95 Summed optical fluxes of SN 1993J table15 45 95 Blackbody temp. and luminosity of SN 1993J
Byte-by-byte Description of file: table2 table3
Bytes Format Units Label Explanations
1- 9 A9 --- UT UT date (Month day) 11- 20 F10.2 d JD Julian Date 22- 26 F5.2 mag Umag []? U band magnitude (1) 27 A1 --- u_Umag [:+] Uncertainty flag for U (2) 29- 33 F5.2 mag Bmag []? B band magnitude 34 A1 --- u_Bmag [:+] Uncertainty flag for B (2) 36- 40 F5.2 mag Vmag []? V band magnitude 41 A1 --- u_Vmag [:+] Uncertainty flag for V (2) 43- 47 F5.2 mag Rmag []? R band magnitude 48 A1 --- u_Rmag [:+] Uncertainty flag for R (2) 50- 54 F5.2 mag Imag []? I band magnitude 55 A1 --- u_Imag [:+] Uncertainty flag for I (2) 57- 60 A4 --- Notes [ CP?] C = cloudy, P = poor seeing 62 A1 --- Note7 [IP] I = Isaac Newton Telescope; P = poor conditions (3)
Note (1): The 76 cm telescope's U-band values do not transform well onto the standard color system, but may at least give a qualitative idea of the behavior of SN 1993J at near-UV wavelengths. Note (2): ":" denotes an uncertain value, and "+" one which has been derived using color terms from the previous or following night. Note (3): In table7, all data are from the 1-m Jacobus Kapteyn Telescope unless marked I.
Byte-by-byte Description of file: table14
Bytes Format Units Label Explanations
1- 10 F10.2 d JD Julian Date 13- 21 E9.3 mW/m2 Flux Fluxes from measured light curves 24- 32 E9.3 mW/m2 LowExt Fluxes for extinction [E(B-V)=0.08 mag] 35- 43 E9.3 mW/m2 ModExt Fluxes for extinction [E(B-V)=0.32 mag] 46- 47 A2 --- Site Observing site (1) 50- 54 A5 --- Bands Bands summed to determine fluxes
Note (1): Site: LP = La Palma; KP = Kitt Peak; L = Leuschner
Byte-by-byte Description of file: table15
Bytes Format Units Label Explanations
1- 10 F10.2 d JD Julian Date 12- 16 I5 K LowTemp Temperature from low extinction [E(B-V)=0.08 mag] 19- 22 F4.2 10+35W LowLum Bolometric luminosity from LowTemp 24- 28 I5 K ModTemp Temperature from moderate extinction [E(B-V)=0.32 mag] 30- 34 F5.2 10+35W ModLum Bolometric luminosity from ModTemp 37- 38 A2 --- Site Observing site (1) 41- 45 A5 --- Bands Bands used to determine luminosities
Note (1): Site: LP = La Palma; KP = Kitt Peak; L = Leuschner
Origin: AAS CD-ROM series, Volume 2, 1994
(End) Lee Brotzman [ADS] 20-Apr-1994, Patricia Bauer [CDS] 21-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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