J/ApJ/904/14 Optical and NIR observation of SN (Ia) 2017cbv (Wang+, 2020) ================================================================================ Optical and Near-infrared Observations of the Nearby SN Ia 2017cbv. Wang L., Contreras C., Hu M., Hamuy M.A., Hsiao E.Y., Sand D.J., Anderson J.P., Ashall C., Burns C.R., Chen J., Diamond T.R., Davis S., Forster F., Galbany L., Gonzalez-Gaitan S., Gromadzki M., Hoeflich P., Li W., Marion G.H., Morrell N., Pignata G., Prieto J.L., Phillips M.M., Shahbandeh M., Suntzeff N.B., Valenti S., Wang L., Wang X., Young D.R., Yu L., Zhang J. =2020ApJ...904...14W ================================================================================ ADC_Keywords: Supernovae; Photometry, UBVRIJKLMNH Keywords: Type Ia supernovae Abstract: Supernova (SN) 2017cbv in NGC5643 is one of a handful of Type Ia supernovae (SNeIa) reported to have excess blue emission at early times. This paper presents extensive BVRIYJHKs-band light curves of SN2017cbv, covering the phase from -16 to +125days relative to B-band maximum light. The SN2017cbv reached a B-band maximum of 11.710{+/-}0.006mag, with a postmaximum magnitude decline of {Delta}m15(B)=0.990{+/-}0.013mag. The SN suffered no host reddening based on Phillips intrinsic color, the Lira-Phillips relation, and the CMAGIC diagram. By employing the CMAGIC distance modulus {mu}=30.58{+/-}0.05mag and assuming H0=72km/s/Mpc, we found that 0.73M{sun} 56Ni was synthesized during the explosion of SN2017cbv, which is consistent with estimates using reddening- and distance-free methods via the phases of the secondary maximum of the near-IR- (NIR-) band light curves. We also present 14 NIR spectra from -18 to +49 days relative to the B-band maximum light, providing constraints on the amount of swept-up hydrogen from the companion star in the context of the single degenerate progenitor scenario. No Pa{beta} emission feature was detected from our postmaximum NIR spectra, placing a hydrogen mass upper limit of 0.1M{sun}. The overall optical/NIR photometric and NIR spectral evolution of SN2017cbv is similar to that of a normal SN Ia, even though its early evolution is marked by a flux excess not seen in most other well-observed normal SNe Ia. We also compare the exquisite light curves of SN2017cbv with some Mch delayed detonation models and sub-Mch double detonation models. Description: Our photometric observations of SN2017cbv started on 2017 March 13.17, ~16 days before B-band maximum. Data were collected in the BVRIYJHKs bands with the Cerro Tololo Inter-American Observatory (CTIO) 1.3m telescope and dual-channel optical/NIR camera ANDICam. This instrument has an optical field of view (FOV) of 6.3"x6.3" (0.37"/pixel) and an NIR FOV of 2.4"x2.4" (0.27"/pixel). Objects: -------------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------------- 14 32 34.42 -44 08 02.8 SN 2017cbv = SN 2017cbv -------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file fig9.dat 31 549 The optical and NIR light curves of SN 2017cbv -------------------------------------------------------------------------------- See also: II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006) J/AJ/130/873 : Properties of BQS objects in the SDSS DR3 area (Jester+, 2005) J/ApJ/659/122 : Improved distances to type Ia supernovae (Jha+, 2007) J/ApJ/689/377 : SNe Ia NIR standard candles from PAIRITEL (Wood-Vasey+, 2008) J/AJ/137/4186 : UBVRI standards around celestial equator (Landolt, 2009) J/ApJ/699/L139 : Spectral parameters of SNe Ia (Wang+, 2009) J/ApJ/721/1608 : Absolute UV magnitudes of type Ia SNe (Brown+, 2010) J/AJ/139/519 : Carnegie supernova project. SNe Ia (Contreras+, 2010) J/AJ/139/120 : Low-redshift Type-Ia supernovae (Folatelli+, 2010) J/ApJ/733/124 : Cepheids in M101 observed with HST (Shappee+, 2011) J/MNRAS/410/585 : SN 2009dc BVRI light curves (Silverman+, 2011) J/ApJ/753/22 : Swift/UVOT observations of SN 2011fe (Brown+, 2012) J/A+A/554/A27 : 2011fe spectrophotometric time series (Pereira+, 2013) J/other/Sci/340.170 : Classifications of 188 SNe Ia (Wang+, 2013) J/ApJ/795/142 : Defining photometric peculiar SNe Ia (Gonzalez-Gaitan+, 2014) J/AJ/148/1 : Optical and ultraviolet photometry of SN 2012fr (Zhang+, 2014) J/MNRAS/448/2766 : Strong lines in optical/NIR for SN 2002bo (Blondin+, 2015) J/MNRAS/448/1345 : YJK for Type Ia supernovae (Dhawan+, 2015) J/A+A/578/A9 : Optical and NIR spectra of SN iPTF13ebh (Hsiao+, 2015) J/A+A/579/A40 : PESSTO catalog (Smartt+, 2015) J/ApJ/869/56 : Updated calibration of the CSP-I SNe Ia sample (Burns+, 2018) J/ApJ/853/62 : Optical & NIR spectra and LCs of SN2016ija (Tartaglia+, 2018) J/ApJ/863/90 : Optical and NIR LCs of the nearby SN 2017cbv (Wee+, 2018) J/ApJ/877/152 : UV to NIR light curves of type Ia SN 2017erp (Brown+, 2019) J/ApJ/870/L1 : K2 observations of Ia supernova SN 2018oh (Dimitriadis+, 2019) J/A+A/627/A174 : Early light curve of SN 2013gy (Holmbo+, 2019) J/ApJ/882/30 : Optical photometry of type Ia SN 2014J (Li+, 2019) J/ApJ/870/13 : K2 lc alternative analysis of ASASSN-18bt (Shappee+, 2019) J/ApJ/882/120 : CfA, CSP, BSP and LOSS spec. & phot. of SNe Ia (Wang+, 2019) J/ApJ/895/118 : Optical & NIR photometry 2 Ia type supernovae (Burns+, 2020) J/A+A/634/A37 : TURTLS Light curves of ^56^Ni distributions (Magee+, 2020) J/ApJ/898/56 : UVOT, ZTF gri LCs and spectra of SN Ia 2019yvq (Miller+, 2020) Byte-by-byte Description of file: fig9.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 F8.2 d MJD [57825/57966] Modified Julian Date 10- 15 F6.2 d Phase [-15.7/126] Days since B-band maximum (1) 17- 18 A2 --- Filt Filter 20- 25 F6.3 mag mag [11.6/17.1] Apparent magnitude in Filter (2) 27- 31 F5.3 mag e_mag [0.01/0.09] Error in mag (3) -------------------------------------------------------------------------------- Note (1): Relative to the epoch of B-band maximum, MJD=57840.87 from Gauss process regression Note (2): For Filters BVRI, magnitude values are calibrated in natural system. For filters YJHKs, magnitude values are calibrated with 2MASS system. Note (3): Uncertainty coming from PSFEx optical photometry was set to 0.01mag if it is smaller than 0.01mag. There is a potential 0.02magnitude systematic error measured from optical aperture photometry. -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Prepared by [AAS], Coralie Fix [CDS], 02-Mar-2022