J/ApJ/863/90 Optical and NIR LCs of the nearby SN 2017cbv (Wee+, 2018)
Optical and infrared photometry of the nearby SN 2017cbv.
Wee J., Chakraborty N., Wang J., Penprase B.E.
<Astrophys. J., 863, 90 (2018)>
=2018ApJ...863...90W 2018ApJ...863...90W
ADC_Keywords: Photometry, UBVRI; Photometry, infrared; Supernovae
Keywords: dust, extinction ; galaxies: distances and redshifts ;
supernovae: individual (SN 2017cbv) ; techniques: photometric
Abstract:
On 2017 March 11, the DLT40 Transient Discovery Survey discovered
SN2017cbv in NGC 5643, a Type 2 Seyfert Galaxy in the Lupus
Constellation. SN 2017cbv went on to become a bright Type Ia
supernova, with a Vmax of 11.51±0.05mag. We present early time
optical and infrared photometry of SN 2017cbv covering the rise and
fall of over 68 days. We find that SN 2017cbv has a broad light curve
Δm15(B)=0.88±0.07, a B-band maximum at 2457840.97±0.43, a
negligible host galaxy reddening where E(B-V)host∼0, and a distance
modulus of 30.49±0.32 to the SN, corresponding to a distance of
12.58-1.71+1.98Mpc. We also present the results of two different
numerical models we used for analysis in this paper: SALT2, an
empirical model for Type Ia supernova optical light curves that
accounts for variability components; and SNooPy, the CSP-II
light-curve model that covers both optical and near-infrared
wavelengths and is used for distance estimates.
Description:
We used the Yale SMARTS 1.3m Telescope with the ANDICAM instrument at
the Cerro Tololo Inter-American Observatory (CTIO) for optical and
near-infrared observation in Johnson BV, Kron-Cousins RI, a 1.05um Y
filter and standard CIT/CTIO JHK bandpasses. The optical field of view
is 6.3'x6.3', while the IR field of view is 2.34'x2.34'.
We started taking optical images of the SN on 2017 March 14, and
started taking infrared images on 2017 March 18. Our observations
ended on 2017 June 9, for a total of 68 nights of data.
Objects:
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RA (ICRS) DE Designation(s)
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14 32 34.42 -44 08 02.7 SN 2017cbv = DLT 17u
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 98 68 Optical and near-IR photometric cadence of SN2017cbv
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See also:
II/183 : UBVRI Photometric Standards (Landolt 1992)
J/A+A/415/863 : Mount Stromlo Abell Cluster SN Search (Germany+, 2004)
J/AJ/128/16 : HIPASS Bright Galaxy Catalog (Koribalski+, 2004)
J/ApJ/659/122 : Improved distances to type Ia supernovae (Jha+, 2007)
J/ApJ/689/377 : PAIRITEL SNIa as NIR standard candles (Wood-Vasey+, 2008)
J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)
J/AJ/142/156 : The CSP (DR2): photometry of SNe Ia (Stritzinger+, 2011)
J/MNRAS/469/3688 : CSS Periodic Variable Star Catalogue (Drake+, 2017)
J/AJ/154/211 : CSP (DR3): photometry of low-z SNe Ia (Krisciunas+, 2017)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 7 F7.3 d JD [826.7/913.6] Julian Date; JD-2457000 (1)
9- 10 I2 s Exp [15/90] Exposure time (2)
12- 17 F6.3 mag Bmag [11.57/15.03]? Apparent B band magnitude
19- 21 I3 mmag e_Bmag [60/299]? Uncertainty in Bmag
23- 28 F6.3 mag Vmag [11.5/14.15]? Apparent V band magnitude
30- 32 I3 mmag e_Vmag [40/186]? Uncertainty in Vmag
34- 39 F6.3 mag Rmag [11.51/14.03]? Apparent R band magnitude
41- 43 I3 mmag e_Rmag [32/158]? Uncertainty in Rmag
45- 50 F6.3 mag Imag [11.63/13.96]? Apparent I band magnitude
52- 54 I3 mmag e_Imag [48/221]? Uncertainty in Imag
56- 61 F6.3 mag Ymag [12.03/14.06]? Apparent Y band magnitude
63- 65 I3 mmag e_Ymag [25/88]? Uncertainty in Ymag
67- 72 F6.3 mag Jmag [11.88/15.6]? Apparent CTIO ANDICAM J band
magnitude
74- 76 I3 mmag e_Jmag [35/140]? Uncertainty in Jmag
78- 83 F6.3 mag Hmag [12.11/14.11]? Apparent CTIO ANDICAM H band
magnitude
85- 87 I3 mmag e_Hmag [32/89]? Uncertainty in Hmag
89- 94 F6.3 mag Kmag [11.86/14.29]? Apparent CTIO ANDICAM K band
magnitude
96- 98 I3 mmag e_Kmag [38/170]? Uncertainty in Kmag
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Note (1): The median Julian date for all the images taken in a night.
Note (2): Exposure times for the BVRJHK bands. Exposure times for I and Y bands
are two items longer than in Exp for each date.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 05-Aug-2019