File:SN 2002cx Lightcurve.svg

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Original file (SVG file, nominally 720 × 540 pixels, file size: 162 KB)

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Summary

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Description
English: Supernova 2002cx light curve. It contains B-band (blue points), V-band (green points), R-band (yellow points), and I-band (red points) from two telescopes, KAIT (circles) and Nickel (Triangles).
Date
Source Own work using: data from: Li, Weidong; Filippenko, Alexei V.; Chornock, Ryan et al. (04/2003). "SN 2002cx: The Most Peculiar Known Type Ia Supernova". Publications of the Astronomical Society of the Pacific 115 (806): 453-473. Chicago, Illinois: University of Chicago Press. DOI:10.1086/374200. Retrieved on 2009-06-19.
Author Falcorian
SVG development
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This plot was created with Matplotlib.
Source code
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Python code

import pylab as pl

# Define files
file = 'ltcv.dat'
outplot = 'SN_2002cx_Lightcurve.svg'

## Will store out data for ploting
points = {'KAIT':{},'Nickel':{}}
## Column ---> Band
map    = {0:'B',1:'V',2:'R',3:'I'}
## Color for each band on the plot
colors = {0:'b',1:'g',2:'y',3:'r'}
## Marker shape for each telescope on the plot
types  = {'KAIT':'o','Nickel':'^'}

# Open data
f = open(file)
cont = f.read()
f.close()
cont = cont.splitlines()

# Prase the file
for line in cont:
    if line.startswith('#'): continue
    sline = line.split(',')
    date = float(sline[0])
    tele = sline[-1]
    pdic = points[tele]
    for i in range(4):
        mag = sline[i+1].strip()
        if mag: 
            smag = mag.split('(')
            fmag = float(smag[0])
            emag = float('.'+smag[1].strip(')'))
            print fmag,emag
            try:
                pdic[i].append((date,fmag,emag))
            except KeyError:
                pdic[i] = [(date,fmag,emag)]

# Make a plot
for tele in points:
    for key in points[tele]:
        band = map[key]
        dates = [tup[0] for tup in points[tele][key]]
        fmags = [tup[1] for tup in points[tele][key]]
        emags = [tup[2] for tup in points[tele][key]]
        color = colors[key]
        type  = types[tele]
        pl.errorbar(dates,fmags,yerr=emags,fmt='%s%s'%(type,color),ms=5.,label='%s %s'%(tele,map[key]))

ax = pl.axis()
pl.axis((ax[0],ax[1],ax[3],ax[2]))

pl.xlabel('JD - 2450000')
pl.ylabel('Magnitude')
pl.title('SN 2002cx Lightcurve')
pl.legend(loc=0,numpoints=1,columnspacing=1.)
pl.savefig(outplot)

Data

Saved as ltcv.dat
 #  JD −      B         V         R          I     Tel.
 #2450000   (mag)     (mag)     (mag)     (mag)
 2411.78,17.81(03),17.81(03),17.70(02),17.70(04),Nickel
 2412.78,17.77(03),17.73(04),17.64(04),17.53(04),KAIT
 2413.81,17.69(04),         ,         ,         ,KAIT
 2419.81,17.85(12),17.45(10),17.53(07),17.30(08),KAIT
 2421.77,18.06(05),17.69(04),17.48(03),17.39(04),KAIT
 2422.75,18.10(09),17.70(03),17.50(03),17.40(03),KAIT
 2423.73,18.22(03),17.80(03),17.47(02),17.42(03),KAIT
 2424.75,18.35(04),17.82(03),17.53(03),17.38(03),KAIT
 2425.76,18.47(06),17.87(06),17.53(05),17.42(06),KAIT
 2426.72,18.61(04),17.88(03),17.54(04),17.37(03),KAIT
 2427.72,18.68(05),17.99(04),17.54(03),17.40(04),KAIT
 2428.76,18.83(04),18.05(04),17.61(03),17.46(04),KAIT
 2429.75,18.73(10),18.16(03),17.61(03),17.45(03),KAIT
 2430.71,19.02(04),18.20(04),17.69(03),17.50(03),KAIT
 2431.78,19.12(04),18.27(04),17.71(04),17.44(04),KAIT
 2432.69,19.24(07),18.34(03),17.73(03),17.46(05),KAIT
 2433.74,19.45(08),18.36(04),17.80(04),17.40(05),Nickel
 2434.70,         ,18.31(07),17.75(07),17.52(07),KAIT
 2435.70,         ,18.45(06),17.84(04),17.67(05),KAIT
 2435.75,19.49(08),18.46(03),17.89(03),17.47(06),Nickel
 2436.75,         ,18.52(05),17.89(05),17.60(04),KAIT
 2436.77,19.61(08),18.54(03),17.93(02),17.64(03),Nickel
 2437.69,         ,18.57(04),17.99(03),17.64(06),KAIT
 2437.70,19.65(06),18.59(02),17.97(02),17.71(02),Nickel
 2438.73,         ,18.66(05),         ,17.66(05),KAIT
 2440.69,         ,18.75(06),18.07(04),17.82(05),KAIT
 2442.69,         ,18.81(04),18.11(04),17.84(05),KAIT
 2443.73,         ,         ,18.19(06),17.90(06),KAIT
 2447.70,         ,         ,18.30(08),17.97(08),KAIT
 2451.74,         ,18.94(07),18.40(08),18.06(05),KAIT
 2455.70,         ,19.11(05),18.45(04),18.16(04),KAIT
 2456.70,         ,         ,18.45(07),18.17(04),KAIT
 2465.70,20.36(21),19.33(07),18.75(06),18.27(08),Nickel

Licensing

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I, the copyright holder of this work, hereby publish it under the following licenses:
w:en:Creative Commons
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GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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Taken by Falcorian

File history

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Date/TimeThumbnailDimensionsUserComment
current19:21, 21 June 2009Thumbnail for version as of 19:21, 21 June 2009720 × 540 (162 KB)Falcorian (talk | contribs)Lightcurve --> light curve
19:02, 21 June 2009Thumbnail for version as of 19:02, 21 June 2009720 × 540 (162 KB)Falcorian (talk | contribs){{Information |Description={{en|1=Supernova 2002cx light curve. It contains B-band (blue points), V-band (green points), R-band (yellow points), and I-band (red points) from two telescopes, KAIT (circles) and Nickel (Triangles). Data is from: {{cite journ

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