J/MNRAS/459/3939 Type II supernova light curves (Valenti+, 2016) ================================================================================ The diversity of Type II supernova versus the similarity in their progenitors. Valenti S., Howell D.A., Stritzinger M.D., Graham M.L., Hosseinzadeh G., Arcavi I., Bildsten L., Jerkstrand A., Mccully C., Pastorello A., Piro A.L., Sand D., Smartt S.J., Terreran G., Baltay C., Benetti S., Brown P., Filippenko A.V., Fraser M., Rabinowitz D., Sullivan M., Yuan F. =2016MNRAS.459.3939V (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Supernovae ; Photometry Keywords: supernovae: general - supernovae: individual: SN 2013bu, SN 2013fs, SN 2014cy, SN 2013ej, ASASSN-14ha, ASASSN-14gm, ASASSN-14dq, SN 2013ab, SN 2013by, SN 2014G, LSQ13dpa, LSQ14gv, SN 2014G, SN 2013ab, SN 2015W Abstract: High-quality collections of Type II supernova (SN) light curves are scarce because they evolve for hundreds of days, making follow-up observations time consuming and often extending over multiple observing seasons. In light of these difficulties, the diversity of SNe II is not fully understood. Here we present ultraviolet and optical photometry of 12 SNe II monitored by the Las Cumbres Observatory Global Telescope Network during 2013 to 2014, and compare them with previously studied SNe having well-sampled light curves. We explore SN II diversity by searching for correlations between the slope of the linear light-curve decay after maximum light (historically used to divide SNe II into IIL and IIP) and other measured physical properties. While SNe IIL are found to be on average more luminous than SNe IIP, SNe IIL do not appear to synthesize more ^56^Ni than SNe IIP. Finally, optical nebular spectra obtained for several SNe in our sample are found to be consistent with models of red supergiant progenitors in the 12-16M_{sun}_ range. Consequently, SNe IIL appear not to account for the deficit of massive red supergiants as SN II progenitors. Description: Between September 2012 and July 2013, LCOGT deployed eight 1m telescopes around the world. Commissioning of the telescopes lasted until 2014 March when the LCOGT network of telescopes become operational (Brown et al. 2013). It was at this time we initiated our programme to obtain detailed follow-up observations of SNe II. To maximize the potential of the LCOGT network to contribute to our understanding of SNe II, we selected to monitor all objects located within 40 Mpc and having constraints on the explosion epoch of within one week or less, or a blue featureless spectrum which is typical of young SNe II. Objects selected for monitoring were discovered by various transient search surveys, and our main criterion for selection was the potential to collect data extending from soon after explosion to at least the end of the plateau phase. The sample consists of 16 bright SNe II discovered in 2013 and 2014. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table2.dat 88 112 Sample of SNe type II tabled2.dat 124 107 *Slope Data tabled3.dat 90 39 *Bolometric light curve parameters tabled4.dat 107 30 Bolometric MCMC light curve parameters tabled5.dat 105 44 MCMC parameters on V band light curves refs.dat 73 54 References tabled1.dat 62 4556 Photometric Data for 12 SNe -------------------------------------------------------------------------------- Note on tabled2.dat: The slope is computed with the following equation: mag = M + s50 x t. Note on tabled3.dat: The slope is computed with the following equation: Log10(Lum(t)) = Log10(Lum(0)) + S1 x t. -------------------------------------------------------------------------------- See also: B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-) Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1 A1 --- LC [*] * indicates light curves in tabled1.dat 3- 13 A11 --- Name SN name 16- 20 F5.2 --- mu Distance modulus 22- 25 F4.2 --- e_mu rms uncertainty on mu 27 A1 --- r_mu Reference for mu, in refs.dat file 29- 38 F10.2 d Epoch Explosion epoch 40- 43 F4.1 d e_Epoch rms uncertainty on Epoch 45- 46 A2 --- r_Epoch Reference for Epoch, in refs.dat file 48- 51 F4.2 mag E(B-V)h Host redenning 53- 56 F4.2 mag e_E(B-V)h rms uncertainty on E(B-V)h 58- 59 A2 --- r_E(B-V)h Reference for E(B-V)h, in refs.dat file 61- 64 F4.2 mag E(B-V)MW Milky Way redenning 66- 88 A23 --- Host Host galaxy name -------------------------------------------------------------------------------- Byte-by-byte Description of file: tabled2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 11 A11 --- Name SN name 17- 21 F5.2 mag Vmag ?=- V magnitude at maximum light 23- 26 F4.2 mag e_Vmag ?=- rms uncertainty on Vmag 28- 35 F8.5 mag s50(V) ?=- Rise time in V band 36- 42 F7.5 mag e_s50(V) ?=- rms uncertainty on s50(V) 43- 46 F4.1 --- phstartV ?=- Starting day in V band 48- 51 F4.1 --- phstopV ?=- Ending day in V band 53- 57 F5.2 mag Rmag ?=- R magnitude at maximum light 59- 62 F4.2 mag e_Rmag ?=- rms uncertainty on Rmag 63 A1 --- n_Rmag [i] i for infinity 64- 71 F8.5 --- s50(R) ?=- Rise time in R band 72- 77 F6.4 --- e_s50(R) ?=- rms uncertainty on s50(R) 78 A1 --- n_s50(R) [i] i for infinity 79- 82 F4.1 --- phstartR ?=- Starting day in R band 84- 87 F4.1 --- phstopR ?=- Ending day in R band 89- 94 F6.2 mag Imag ?=- I magnitude at maximum light 96- 99 F4.2 mag e_Imag ?=- rms uncertainty in Imag 101-108 F8.5 --- s50(I) ?=- Rise time in I band 109-115 F7.5 --- e_s50(I) ?=- rms uncertainty on s50(I) 116-119 F4.1 --- phstartI ?=- Starting day in I band 121-124 F4.1 --- phstopI ?=- Ending day in I band -------------------------------------------------------------------------------- Byte-by-byte Description of file: tabled3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 13 A13 --- Name SN name 15- 19 F5.2 [Lsun] logL1(0) ?=- Luminosity of the initial, steeper slope of the light curve (Log10(Lum1(0)) 21- 27 F7.4 --- S1 ?=- Decline rate of the initial, steeper slope of the light curve 29- 34 F6.4 --- e_S1 ?=- rms uncertainty on S1 35 A1 --- n_e_S1 [i] i for infinity 36- 39 F4.1 d phstart1 ?=- Starting day of initial slope 41- 44 F4.1 d phstop1 ?=- Ending day of initial slope 46- 50 F5.2 [Lsun] logL2(0) ?=- Luminosity of the second, shallower slope of the light curve (Log10(Lum2(0)) 52- 58 F7.4 --- S2 ?=- Decline rate of the second, shallower slope of the light curve 60- 65 F6.4 --- e_S2 ?=- rms uncertainty on S2 67- 70 F4.1 d phstart2 ?=- Starting day of second slope 72- 76 F5.1 d phstop2 ?=- Ending day of second slope 78- 83 F6.4 Msun MNi ?=- Ni mass 85- 90 F6.4 Msun e_MNi ?=- rms uncertainty on MNi -------------------------------------------------------------------------------- Byte-by-byte Description of file: tabled4.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 14 A14 --- Name SN name 16- 20 F5.1 --- Tpt Time of the drop (G1) 22- 25 F4.1 --- e_Tpt rms uncertainty on Tpt 27- 34 F8.5 --- A0 Depth of the drop (G1) 36- 42 F7.5 --- E_A0 Error on A0, upper value 44- 50 F7.5 --- e_A0 Error on A0, lower value 52- 58 F7.5 --- W0 Shape of the drop (G1) 60- 66 F7.5 --- E_W0 Error on W0, upper value 68- 74 F7.5 --- e_W0 Error on W0, lower value 76- 83 F8.5 --- M0 M0 parameter (G1) 85- 91 F7.5 --- E_M0 Error on M0, upper value 93- 99 F7.5 --- e_M0 Error on M0, lower value 101-107 F7.4 --- P0 P0 parameter (G1) -------------------------------------------------------------------------------- Byte-by-byte Description of file: tabled5.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 14 A14 --- Name SN name 16- 20 F5.1 --- tpt Time of the drop (G1) 22- 25 F4.1 --- e_tpt rms uncertainty on tpt 27- 33 F7.5 --- a0 Depth of the drop (G1) 35- 41 F7.5 --- E_a0 Error on a0, upper value 43- 49 F7.5 --- e_a0 Error on a0, lower value 51- 57 F7.5 --- w0 Shape of the drop (G1) 59- 65 F7.5 --- E_w0 Error on w0, upper value 67- 73 F7.5 --- e_w0 Error on w0, lower value 75- 82 F8.5 --- m0 m0 parameter (G1) 84- 90 F7.5 --- E_m0 Error on m0, upper value 92- 98 F7.5 --- e_m0 Error on m0, lower value 100-105 F6.4 --- p0 p0 parameter (G1) -------------------------------------------------------------------------------- Byte-by-byte Description of file: refs.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 A2 --- Ref Reference code 4- 22 A19 --- BibCode BibCode 24- 50 A27 --- Aut Author's name 52- 73 A22 --- Com Comment -------------------------------------------------------------------------------- Byte-by-byte Description of file: tabled1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 11 A11 --- Name SN name 14- 23 A10 "date" Date Observation date 25- 35 F11.3 d JD Julian date 36 A1 --- l_mag Limit flag on mag 37- 42 F6.3 mag mag Magnitude in Filter (1) 44- 48 F5.3 mag e_mag ?=- rms uncertainty on mag 50- 52 A3 --- Filter Filter (2) 54- 62 A9 --- Tel Telescope (3) -------------------------------------------------------------------------------- Note (1): Data have not been corrected for extinction. Note (2): Filters: UBVRI, um2, uw1, uw2 us, bs, vs, g+r, r, i ,z Note (3): Telescopes as follows: Swift = Swift Telescope LSQ = LSQ, La Silla Quest, Chile 1m0-08 = 1m0-08 McDonald Observatory, USA 1m0-10 = 1m0-10, Sutherland, South Africa 1m0-12 = 1m0-12, Sutherland, South Africa 1m0-13 = 1m0-13, Sutherland, South Africa 1m0-04 = 1m0-04, Cerro Tololo, Chile 1m0-05 = 1m0-05, Cerro Tololo, Chile 1m0-09 = 1m0-09, Cerro Tololo, Chile 1m0-03 = 1m0-03, Siding Spring, Australia 1m0-11 = 1m0-11, Siding Spring, Australia -------------------------------------------------------------------------------- Global notes: Note (G1): The parameter t_PT_ is obtained by fitting the SN light curve in magnitudes around the fall from the plateau with the function y(t) = -a0/[1+e^(t-tPT)/W0) + (P0 x t ) + M0 -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Patricia Vannier [CDS] 04-Aug-2017