J/ApJ/841/48 UBVR and IR photometry of SN 2011fe (Ia) (Shappee+, 2017)
Whimper of a bang: documenting the final days of the nearby Type Ia supernova
2011fe.
Shappee B.J., Stanek K.Z., Kochanek C.S., Garnavich P.M.
<Astrophys. J., 841, 48 (2017)>
=2017ApJ...841...48S 2017ApJ...841...48S
ADC_Keywords: Supernovae ; Photometry, UBVRI ; Photometry, infrared
Keywords: supernovae: general ; supernovae: individual (SN 2011fe)
Abstract:
Using the Hubble Space Telescope (HST) and the Large Binocular
Telescope, we followed the evolution of the Type Ia supernova (SN Ia)
2011fe for an unprecedented 1840 days past B-band maximum light and
over a factor of 7 million in flux. At 1840 days, the 4000-17000Å
quasi-bolometric luminosity is just (420±20)L☉. By measuring
the late-time quasi-bolometric light curve, we present the first
confident detection of 57Co decay in a SN Ia light curve and
estimate a mass ratio of log(57Co/56Co)=-1.59-0.07+0.06. We do
not have a clean detection of 55Fe, but find a limit of
55Fe/57Co<0.22 with 99% confidence. These abundance ratios provide
unique constraints on the progenitor system because the central
density of the exploding white dwarf(s) dictates these nucleosynthetic
yields. The observed ratios strongly prefer the lower central
densities of double-degenerate models (55Fe/57Co=0.27) over the
higher central densities of near-Chandrasekhar-mass single-degenerate
models (55Fe/57Co=0.68). However, additional theoretical studies
predicting isotopic yields from a broader range of progenitor systems
are motivated by these unique observations. We will continue to
observe SN 2011fe for another ∼600 days with HST and possibly beyond.
Description:
We analyzed pre- and post-explosion images of SN 2011fe from the Large
Binocular Camera (LBC) and the NIR spectrograph LUCI on the Large
Binocular Telescope (LBT) and the Wide Field Camera 3 (WFC3) and the
Advanced Camera for Surveys (ACS) on HST.
We obtained 28 epochs of LBT/LBC Uspec, B-, V-, and R-band imaging
of M101 between 2008 March and 2016 February as part of a program
searching for failed SNe (Kochanek+ 2008ApJ...684.1336K 2008ApJ...684.1336K ; Gerke+ 2011,
J/ApJ/743/176 ; 2015MNRAS.450.3289G 2015MNRAS.450.3289G).
We also obtained 3 epochs of LBT/LUCI J-band imaging of SN 2011fe
between 2012 May and 2013 February.
We also obtained four epochs of HST data using the WFC3 UVIS and IR
cameras (GO-13737 and 14166) starting in 2014 October. We used the
WFC3/UVIS F438W (B), F555W (V), F600LP (R+I), F110W (Y+J), and F160W
(H) filters.
Finally, for completeness, we also present archival HST WFC3/UVIS,
ACS, and WFC3/IR photometry in the F336W (U), F475W (g), F625W (r),
F775W (i), F105W (Y), F125W (J), and F160W (H) filters acquired during
2015 January (GO-13824; PI W. Kerzendorf).
Objects:
----------------------------------------------------------
RA (ICRS) DE Designation(s)
----------------------------------------------------------
14 03 05.71 +54 16 25.2 SN 2011fe = PTF 11kly
----------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 54 85 Photometric observations
--------------------------------------------------------------------------------
See also:
B/hst : HST Archived Exposures Catalog (STScI, 2007)
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
J/ApJ/743/176 : BVI photometry of Cepheids in M81 (Gerke+, 2011)
J/ApJ/733/124 : Cepheids in M101 observed with HST (Shappee+, 2011)
J/ApJ/749/18 : Swift/UVOT observations of 12 nearby SN-Ia (Brown+, 2012)
J/ApJ/753/22 : Swift/UVOT observations of SN 2011fe (Brown+, 2012)
J/MNRAS/426/2668 : Soft X-ray emission of SNIa progenitors (Nielsen+, 2012)
J/other/NewA/20.30 : BVRI light curves of 3 SN (Munari+, 2013)
J/A+A/554/A27 : 2011fe spectrophotometric time series (Pereira+, 2013)
J/MNRAS/444/3258 : Velocities and EW of PTF SNe Ia (Maguire+, 2014)
J/MNRAS/445/2440 : SN with associated Planck CMB temperatures (Yershov+, 2014)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/ApJ/795/142 : Photometric peculiar SNe Ia (Gonzalez-Gaitan+, 2014)
J/ApJS/215/9 : PHAT X. UV-IR photometry of M31 stars (Williams+, 2014)
J/ApJS/220/9 : CfAIR2: NIR light curves of Type Ia SNe (Friedman+, 2015)
J/ApJS/220/20 : Si and Ca high-velocity features in SNe Ia (Zhao+, 2015)
J/MNRAS/446/3895 : The rising light curves of Type Ia supernovae (Firth+, 2015)
J/MNRAS/448/1345 : YJK for Type Ia supernovae (Dhawan+, 2015)
J/MNRAS/451/1973 : Type Ia supernovae high-velocity features (Silverman+, 2015)
J/MNRAS/456/2848 : Properties of 500 SNe and their 419 hosts (Hakobyan+, 2016)
J/ApJ/826/144 : Follow-up observations of SNIa ASASSN-14lp (Shappee+, 2016)
J/ApJ/836/232 : Swift-UVOT obs. analysis of 29 SNe Ia (Brown+, 2017)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.3 d JD Observation date; Julian Date
13- 18 A6 --- Filt Filter (U_spec,B,V,R,J,F110W,F160W,F438W,F555W,
F600LP or "bol")
20- 24 F5.2 10+29W Fbol [1.6/13.8]? Bolometric flux
(in 10+36erg/s units)
26- 29 F4.2 10+29W e_Fbol [0.09/0.3]? Uncertainty in Fbol
31- 35 F5.2 mag omag [16.3/27.5]? Observed Vega magnitude in Filt
37- 40 F4.2 mag e_omag [0.01/0.9]? Uncertainty in omag
42- 54 A13 --- Tel Telescope/Instrument used
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 17-Jan-2018