J/MNRAS/377/1531 Optical & infrared photometry of SN 2004eo (Pastorello+, 2007)
ESC and KAIT observations of the transitional Type Ia SN 2004eo.
Pastorello A., Mazzali P.A., Pignata G., Benetti S., Cappellaro E.,
Filippenko A.V., Li W., Meikle W.P.S., Arkharov A.A., Blanc G., Bufano F.,
Derekas A., Dolci M., Elias-Rosa N., Foley R.J., Ganeshalingam M.,
Harutyunyan A., Kiss L.L., Kotak R., Larionov V.M., Lucey J.R.,
Napoleone N., Navasardyan H., Patat F., Rich J., Ryder S.D., Salvo M.,
Schmidt B.P., Stanishev V., Szekely P., Taubenberger S., Temporin S.,
Turatto M., Hillebrandt W.
<Mon. Not. R. Astron. Soc., 377, 1531-1552 (2007)>
=2007MNRAS.377.1531P 2007MNRAS.377.1531P
ADC_Keywords: Supernovae ; Photometry, UBVRI ; Photometry, infrared
Keywords: supernovae: general - supernovae: individual: SN 2004eo -
supernovae: individual: SN 1992A - galaxies: individual: NGC 6928
Abstract:
We present optical and infrared observations of the unusual Type Ia
supernova (SN) 2004eo. The light curves and spectra closely resemble
those of the prototypical SN 1992A, and the luminosity at maximum
(MB=-19.08) is close to the average for a Type Ia supernova (SN Ia).
However, the ejected 56Ni mass derived by modelling the bolometric
light curve (about 0.45M☉) lies near the lower limit of the
56Ni mass distribution observed in normal SNe Ia. Accordingly,
SN 2004eo shows a relatively rapid post-maximum decline in the light
curve [δm15(B)true=1.46], small expansion velocities in the ejecta
and a depth ratio SiIIλ5972/SiIIλ6355 similar to that of
SN 1992A. The physical properties of SN 2004eo cause it to fall very
close to the boundary between the faint, low-velocity gradient and
high-velocity gradient subgroups proposed by Benetti et al. Similar
behaviour is seen in a few other SNe Ia. Thus, there may in fact exist
a few SNe Ia with intermediate physical properties.
Description:
SN 2004eo was monitored extensively, especially in B, V, R and I
photometry and optical spectroscopy. Observations cover a period from
about 11d before B-band maximum to about three months after maximum.
Objects:
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RA (2000) DE Designation(s)
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20 32 54.19 +09 55 42.7 SN 2004eo = SN 2004eo
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 67 20 U, B, V, R, I magnitudes of the local standards
in the field of NGC 6928 (see Fig. 1)
table4.dat 96 104 Original optical photometry of SN 2004eo
table5.dat 59 94 S-correction to be added to the data of SN 2004eo
in Table 4
table6.dat 59 104 K-correction to be added to the data of SN 2004eo
in Table 4
table7.dat 95 104 S- and K-corrected optical photometry of SN 2004eo
table8.dat 68 22 IR photometry of SN 2004eo
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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- 2 I2 --- Seq Sequential number
4- 9 F6.3 mag Umag U magnitude
11- 15 F5.3 mag e_Umag rms uncertainty on Umag (1)
17- 22 F6.3 mag Bmag B magnitude
24- 28 F5.3 mag e_Bmag rms uncertainty on Bmag (1)
30- 35 F6.3 mag Vmag V magnitude
37- 41 F5.3 mag e_Vmag rms uncertainty on Vmag (1)
43- 48 F6.3 mag Rmag R magnitude
50- 54 F5.3 mag e_Rmag rms uncertainty on Rmag (1)
56- 61 F6.3 mag Imag I magnitude
63- 67 F5.3 mag e_Imag rms uncertainty on Imag (1)
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Note (1): The uncertainties are the rms of the individual exposures used to
estimate the average magnitudes.
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Byte-by-byte Description of file: table[47].dat
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Bytes Format Units Label Explanations
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1- 10 A10 "DD/MM/YYYY" Date Observation date
12- 21 F10.2 d JD Julian date
23- 24 A2 --- l_Umag [≥] Limit flag on Umag
25- 30 F6.3 mag Umag ? U magnitude
32- 36 F5.3 mag e_Umag ? rms uncertainty on Umag
38- 43 F6.3 mag Bmag ? B magnitude
45- 49 F5.3 mag e_Bmag ? rms uncertainty on Bmag
51- 56 F6.3 mag Vmag ? V magnitude
58- 62 F5.3 mag e_Vmag ? rms uncertainty on Vmag
64- 65 A2 --- l_Rmag [≥] Limit flag on Rmag
66- 71 F6.3 mag Rmag ? R magnitude
73- 77 F5.3 mag e_Rmag ? rms uncertainty on Rmag
79- 80 A2 --- l_Imag [≥] Limit flag on Imag
81- 86 F6.3 mag Imag ? I magnitude
88- 92 F5.3 mag e_Imag ? rms uncertainty on Imag
94- 95 I2 --- Inst Instrument (G1)
96 A1 --- n_Inst [a] Vmag origin (1)
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Note (1): 'a' indicates that this V-band observation was kindly provided by
M. Fiaschi, and obtained using the 0.41-m Newton/Cassegrain Telescope
of the Gruppo Astrofili di Padova, Italy, equipped with a
1024x1024pixel E2V CCD.
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Byte-by-byte Description of file: table[56].dat
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Bytes Format Units Label Explanations
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1- 10 A10 "DD/MM/YYYY" Date Observation date
12- 21 F10.2 d JD Julian date
23- 28 F6.3 mag cUmag ? Correction on Umag
29 A1 --- n_cUmag [N] cUmag not corrected (1)
30- 35 F6.3 mag cBmag ? Correction on Bmag
37- 42 F6.3 mag cVmag ? Correction on Vmag
44- 49 F6.3 mag cRmag ? Correction on Rmag
51- 56 F6.3 mag cImag ? Correction on Imag
58- 59 I2 --- Inst Instrument (G1)
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Note (1): 'N' indicates that the K-correction in the U band was not
computed for these two epochs.
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "DD/MM/YYYY" Date Observation date
12- 21 F10.2 d JD Julian date
23- 24 A2 --- l_Jmag [≥] Limit flag on Jmag
25- 30 F6.3 mag Jmag ? J magnitude
32- 36 F5.3 mag e_Jmag ? rms uncertainty on Jmag
38- 39 A2 --- l_Hmag [≥] Limit flag on Hmag
40- 45 F6.3 mag Hmag ? H magnitude
47- 51 F5.3 mag e_Hmag ? rms uncertainty on Hmag
53- 54 A2 --- l_Kmag [≥] Limit flag on Kmag
55- 60 F6.3 mag Kmag ? K magnitude
62- 66 F5.3 mag e_Kmag ? rms uncertainty on Kmag
68 A1 --- Inst Instrument (1)
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Note (1): Instrument as follows:
A = CI + SWIRCAM
B = TNG + NICS
C = AAT + IRIS2
D = WHT + LIRIS
E = VLT-Antu + ISAAC
F = CAHA3.5-m + OMEGA2000
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Global notes:
Note (G1): Instrument as follows:
0 = SSO2.3m + imager
1 = KAIT + CCD
2 = LT
3 = NOT+ALFOSC
4 = SSO1-m + WFI
5 = Nw41-cm + CCD
6 = CAHA2.2-m + CAFOS
7 = Ten0.81-m + CCD
8 = Ekar1.82-m + AFOSC
9 = ESO/MPI2.2-m + WFI
10 = VLT-Antu + FORS1
11 = TNG + DOLORES
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 20-Mar-2008