J/MNRAS/369/1880 Photometry of SN 2003cg (Elias-Rosa+, 2006)
Anomalous extinction behaviour towards the Type Ia SN 2003cg.
Elias-Rosa N., Benetti S., Cappellaro E., Turatto M., Mazzali P.A.,
Patat F., Meikle W.P.S., Stehle M., Pastorello A., Pignata G., Kotak R.,
Harutyunyan A., Altavilla G., Navasardyan H., Qiu Y., Salvo M.,
Hillebrandt W.
<Mon. Not. R. Astron. Soc., 369, 1880-1900 (2006)>
=2006MNRAS.369.1880E 2006MNRAS.369.1880E
ADC_Keywords: Supernovae ; Photometry, infrared ; Photometry, UBVRIJKLMNH
Keywords: supernovae: general - supernovae: individual: SN 2003cg -
dust, extinction
Abstract:
We present optical and near-infrared photometry and spectroscopy of
the Type Ia SN 2003cg, which exploded in the nearby galaxy NGC 3169.
The observations cover a period between 8.5 and +414d post-maximum.
SN 2003cg is a normal but highly reddened Type Ia event. Its B
magnitude at maximum Bmax=15.94±0.04 and
Δm15(B)obs=1.12±0.04 [Δm15(B)intrinsic=1.25±0.05].
Allowing RV to become a free parameter within the Cardelli et al.
(1989ApJ...345..245C 1989ApJ...345..245C) extinction law, simultaneous matches to a range
of colour curves of normal SNe Ia yielded E(B-V)=1.33±0.11, and
RV=1.80±0.19. While the value obtained for RV is small, such values
have been invoked in the past, and may imply a grain size which is
small compared with the average value for the local interstellar
medium.
Description:
SN 2003cg was discovered in 2003 March 21.51 UT by Itagati and Arbour
(IAUC 8097) at 14"E and 5"N from the centre of the nearby spiral
galaxy NGC 3169 .
Objects:
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RA (2000) DE Designation(s) (File)
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10 14 16.0 +03 28 02 SN 2003cg = SN 2003cg (table1)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 89 64 Original optical photometry of SN 2003cg
table2.dat 90 15 Magnitudes for the local sequence stars identified
in the field of SN 2003cg coded as in Fig. 1
table3.dat 65 11 Original near-IR photometry of SN 2003cg
table4.dat 41 25 Optical spectroscopy of SN 2003cg
table5.dat 51 10 IR spectroscopy of SN 2003cg
table6.dat 81 52 Optical S-correction to be added to the data in
Table 1, in order to convert the SN magnitudes
to the Bessell (1990PASP..102.1181B 1990PASP..102.1181B) system
table7.dat 69 9 NIT S-correction to be added to the data in
Table 3, in order to convert the SN magnitudes to
the Persson et al. (1998AJ....116.2475P 1998AJ....116.2475P) system
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "DD/MM/YYYY" Date Observation date
11 A1 --- n_Date [b] b: Japan (Itagati & Arbour,
2003IAUC.8097....1I 2003IAUC.8097....1I)
13- 20 F8.2 d MJD Modified Julian Date
22- 26 F5.1 --- Phase Phase, relative to Bmag (MJD = 52729.40)
28- 32 F5.2 mag Umag ?=- U magnitude
34- 37 F4.2 mag e_Umag ?=- rms uncertainty on Umag
39 A1 --- l_Bmag Limit flag on Bmag
40- 44 F5.2 mag Bmag ?=- B magnitude
46- 49 F4.2 mag e_Bmag ?=- rms uncertainty on Bmag
51 A1 --- l_Vmag Limit flag on Vmag
52- 56 F5.2 mag Vmag ?=- V magnitude
58- 61 F4.2 mag e_Vmag ?=- rms uncertainty on Vmag
63 A1 --- l_Rmag Limit flag on Rmag
64- 68 F5.2 mag Rmag ?=- R magnitude
70- 73 F4.2 mag e_Rmag ?=- rms uncertainty on Rmag
75 A1 --- l_Imag Limit flag on Imag
76- 80 F5.2 mag Imag ?=- I magnitude
82- 85 F4.2 mag e_Imag ?=- rms uncertainty on Imag
87- 89 A3 --- Inst Instrument (G1)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq [1/15] Star sequential number
4- 8 F5.2 mag Umag ?=- Landolt U magnitude
10- 13 F4.2 mag e_Umag ?=- rms uncertainty on Umag
15- 19 F5.2 mag Bmag Landolt B magnitude
21- 24 F4.2 mag e_Bmag rms uncertainty on Bmag
26- 30 F5.2 mag Vmag Landolt V magnitude
32- 35 F4.2 mag e_Vmag rms uncertainty on Vmag
37- 41 F5.2 mag Rmag Landolt R magnitude
43- 46 F4.2 mag e_Rmag rms uncertainty on Rmag
48- 52 F5.2 mag Imag ?=- Landolt I magnitude
54- 57 F4.2 mag e_Imag ?=- rms uncertainty on Imag
59- 63 F5.2 mag Jmag ?=- Landolt J magnitude
65- 68 F4.2 mag e_Jmag ?=- rms uncertainty on Jmag
70- 74 F5.2 mag Hmag ?=- Landolt H magnitude
76- 79 F4.2 mag e_Hmag ?=- rms uncertainty on Hmag
81- 85 F5.2 mag Kmag ?=- Landolt K magnitude
87- 90 F4.2 mag e_Kmag ?=- rms uncertainty on Imag
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "DD/MM/YYYY" Date Observation date
11 A1 --- n_Date [b] b: Photometric night
13- 20 F8.2 d MJD Modified Julian Date
22- 26 F5.1 --- Phase Phase, relative to Bmag (MJD = 52729.40)
28- 32 F5.2 mag Jmag ?=- J magnitude
34- 37 F4.2 mag e_Jmag ?=- rms uncertainty on Jmag
39- 43 F5.2 mag Hmag ?=- H magnitude
45- 48 F4.2 mag e_Hmag ?=- rms uncertainty on Hmag
50- 54 F5.2 mag Kmag ?=- K magnitude
56- 59 F4.2 mag e_Kmag ?=- rms uncertainty on Kmag
61- 65 A5 --- Inst Instrument (G1)
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Byte-by-byte Description of file: table[45].dat
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Bytes Format Units Label Explanations
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1- 10 A10 "DD/MM/YYYY" Date Observation date
12- 19 F8.2 d MJD Modified Julian Date
21- 25 F5.1 --- Phase Phase, relative to Bmag (MJD = 52729.40)
27- 31 I5 0.1nm Range1 Range interval (lower limit)
32 A1 --- --- [-]
33- 37 I5 0.1nm Range2 Range interval (upper limit)
39- 51 A13 --- Inst Instrument (1)
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Note (1): Instruments as follows:
WHT = William Herschel Telescope plus ISIS
CAF = Calar Alto 2.2m plus CAFOS
SSO = Siding Spring Observatory 2.3m plus Double Beam Spectrograph
ASI = Asiago 1.82m Copernico Telescope plus AFOSC
BAO = Beijing Astronomical Observatory 0.85 m plus CCD
TGD = Telescopio Nazionale Galileo plus DOLORES
INT = Isaac Newton Telescope plus IDS
FOR = ESO VLT-UT2 plus FORS1
SofI = ESO NTT plus SofI
UKI = United Kingdom Infrared Telescope plus CGS4
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "DD/MM/YYYY" Date Observation date
12- 19 F8.2 d MJD Modified Julian Date
21- 25 F5.1 --- Phase Phase, relative to Bmag (MJD = 52729.40)
27- 32 F6.3 mag cBmag ?=- B magnitude correction
34- 38 F5.3 mag e_cBmag ?=- rms uncertainty on cBmag
40- 45 F6.3 mag cVmag ?=- V magnitude correction
47- 51 F5.3 mag e_cVmag ?=- rms uncertainty on cVmag
53- 58 F6.3 mag cRmag ?=- R magnitude correction
60- 64 F5.3 mag e_cRmag ?=- rms uncertainty on cRmag
66- 71 F6.3 mag cImag ?=- I magnitude correction
73- 77 F5.3 mag e_cImag ?=- rms uncertainty on cImag
79- 81 A3 --- Inst Instrument (G1)
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "DD/MM/YYYY" Date Observation date
12- 19 F8.2 d MJD Modified Julian Date
21- 25 F5.1 --- Phase Phase, relative to Bmag (MJD = 52729.40)
27- 32 F6.3 mag cJmag ?=- J magnitude correction
34- 38 F5.3 mag e_cJmag ?=- rms uncertainty on cJmag
40- 45 F6.3 mag cHmag ?=- H magnitude correction
47- 51 F5.3 mag e_cHmag ?=- rms uncertainty on cHmag
53- 58 F6.3 mag cKmag ?=- K magnitude correction
60- 64 F5.3 mag e_cKmag ?=- rms uncertainty on cKmag
66- 69 A4 --- Inst Instrument (G1)
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Global notes:
Note (G1): Instruments as follows:
UNF = unfiltered CCD frames taken with a 0.60-m, Japan
(Itagati & Arbour, 2003IAUC.8097....1I 2003IAUC.8097....1I)
CAF = Calar Alto 2.2m plus CAFOS plus CCD SITe 0.53arcsec/pix
SSO = Siding Spring Observatory 2.3m plus CCD 0.59arcsec/pix
BAO = Beijing Astronomical Observatory 0.85m plus CCD 0.45arcsec/pix
ASI = Asiago 1.82m Copernico Telescope plus AFOSC 0.47arcsec/pix
TGD = Telescopio Nazionale Galileo plus DOLORES 0.28arcsec/pix
TGO = Telescopio Nazionale Galileo plus OIG 0.07arcsec/pix
WFI = ESO/MPI 2.2m plus WFI 0.24arcsec/pix
FOR = ESO VLT-UT2 plus FORS1 0.20arcsec/pix
SofI = ESO NTT plus SofI 0.29arcsec/pix
Isaac = ESO VLT-UT1 plus Isaac 0.15arcsec/pix
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 16-Feb-2007