for JET PRODUCTION Maryam Modjaz, Federica B. Bianco, Magdalena Siwek, Shan Huang, David Fierroz, Yuqian Liu, Dan Perley, Iair Arcavi, Bradley S. Cenko, Alex V. Filippenko, Avishay Gal- Yam, Mansi Kasliwal, Shri Kulkarni, Steve Schulze, Thomas Brink, Kelsey I. Clubb, Melissa Graham, Jon Mauerhan, Isaac Shivvers, Jeffrey M. Silverman, Weikang Zheng @fedhere fedhere
federica bianco, UDel | fedhere Motivation Data & Method Results http://fbb.space/science/vizs/snclassificationviz/index.html SN Ic - SN IcBL - SNwGRB connection • Not all SN IcBL have GRB • Long GRB associated only w SN IcBL • All long GRB z<0.3 associated w SN IcBL
federica bianco, UDel | fedhere Motivation Data & Method Results SN Ic - SN IcBL - SNwGRB connection • Not all SN IcBL have GRB • Long GRB associated only w SN IcBL • All long GRB z<0.3 associated w SN IcBL Missing GRB explanations • Off-axis • No GRB produced • Chocked GRB (low energy) • Do all stripped SNe have engines? http://fbb.space/science/vizs/snclassificationviz/index.html
federica bianco, UDel | fedhere Motivation Data & Method Results SN Ic - SN IcBL - SNwGRB connection • Not all SN IcBL have GRB • Long GRB associated only w SN IcBL • All long GRB z<0.3 associated w SN IcBL Stripping models • Stellar winds -> high Z • Rotationally driven winds -> low Z • Chemically homogeneous evolution in binary -> low Z • Binary evolution-> high SFR LowZ <-> high SFR (Mannucci+ 2011) Missing GRB explanations • Off-axis • No GRB produced • Chocked GRB (low energy) • Do all stripped SNe have engines? http://fbb.space/science/vizs/snclassificationviz/index.html Heuvel & Portegies-Zwart+2013 Vink+2001 e.g. Yoon+2006 Cantiello+2007
federica bianco, UDel | fedhere Motivation Data & Method Results SN Ic - SN IcBL - SNwGRB connection • Not all SN IcBL have GRB • Long GRB associated only w SN IcBL • All long GRB z<0.3 associated w SN IcBL How do the environments of SN Ic, IcBL, SNwGRB compare? Missing GRB explanations • Off-axis • No GRB produced • Chocked GRB (low energy) • Do all stripped SNe have engines? Stripping models • Stellar winds -> high Z • Rotationally driven winds -> low Z • Chemically homogeneous evolution in binary -> low Z • Binary evolution-> high SFR LowZ <-> high SFR (Mannucci+ 2011)
pyMCZ: an #openacces, #opensource #python module to derive metallicity AND ITS UNCERTAINTY from HII region strong lines (140 character or less... you can tweet that!) federica bianco, UDel | fedhere Motivation Data & Method Results 1. Unbiased sample of SNe GRB sample + PTF 2. Carefully type SNe w SNID if there is a continuum the “classification” is not well defined 3. Measure SFR and local Z (with uncertainties!) 4. Generally responsible use of statistical analysis… \Spectra for all galaxies (re-observing PTF) Photometry Optical from SDSS/NS-Atlas/Pan-STARRS, UV from Galex Modjaz 2011
pyMCZ: an #openacces, #opensource #python module to derive metallicity AND ITS UNCERTAINTY from HII region strong lines (140 character or less... you can tweet that!) federica bianco, UDel | fedhere Motivation Data & Method Results PTF Ic 10bhu (SN site) observed spectrum continuum + nebular fit + residuals continuum emission line spectrum f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 PTF Ic 10fmx (SN site) observed spectrum continuum + nebular fit + residuals continuum emission line spectrum f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 Scales: • KD02comb (theoretical) • D13_N2S2_O3S2 (theoretical) • PP04_O3N2 (hybrid) • M08 N2Hα (hybrid) E(B − V)host estimates. host-galaxy spectra sample 28 SNe Ic (PTF) 14 SN Ic-bl (PTF) 11 SB-GRB Spectra obtained by us at Keck I, Keck II, P200, GeminiN & GeminiS
pyMCZ: an #openacces, #opensource #python module to derive metallicity AND ITS UNCERTAINTY from HII region strong lines (140 character or less... you can tweet that!) federica bianco, UDel | fedhere Motivation Data & Method Results PTF Ic-bl 09sk (nuc) observed spectrum continuum + nebular fit + residuals continuum emission line spectrum f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 PTF Ic-bl 10aavz (SN site) observed spectrum continuum + nebular fit + residuals continuum emission line spectrum f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 f (10 15 erg s 1 cm 1 ˚ A 1) Observed Wavelength ( ˚ A) Observed Wavelength ( ˚ A) [O II] H H H↵ [N II] 4000 5000 6000 7000 Scales: • KD02comb (theoretical) • D13_N2S2_O3S2 (theoretical) • PP04_O3N2 (hybrid) • M08 N2Hα (hybrid) E(B − V)host estimates. host-galaxy spectra sample 28 SNe Ic (PTF) 14 SN Ic-bl (PTF) 11 SB-GRB Spectra obtained by us at Keck I, Keck II, P200, GeminiN & GeminiS
pyMCZ: an #openacces, #opensource #python module to derive metallicity AND ITS UNCERTAINTY from HII region strong lines (140 character or less... you can tweet that!) federica bianco, UDel | fedhere Motivation Data & Method Results Spectra obtained by us at Keck I, Keck II, P200, GeminiN & GeminiS
pyMCZ: an #openacces, #opensource #python module to derive metallicity AND ITS UNCERTAINTY from HII region strong lines (140 character or less... you can tweet that!) federica bianco, UDel | fedhere Motivation Data & Method Results https://github.com/fedhere/getPTFSNcoords Spectra obtained by us at Keck I, Keck II, P200, GeminiN & GeminiS
pyMCZ: an #openacces, #opensource #python module to derive metallicity AND ITS UNCERTAINTY from HII region strong lines (140 character or less... you can tweet that!) federica bianco, UDel | fedhere Motivation Data & Method Results pyMCZ: an #openacces #opensource #python module to derive metallicity and its uncertainty from HII region strong lines (140 character or less... so that you can tweet that!) Bianco+16 Astronomy&Computing KD02comb PP04_O3N2 https://github.com/nyusngroup/pyMCZ + M08_N2Hα & D13_N2S2_O3S2
pyMCZ: an #openacces, #opensource #python module to derive metallicity AND ITS UNCERTAINTY from HII region strong lines (140 character or less... you can tweet that!) federica bianco, UDel | fedhere Motivation Data & Method Results pyMCZ: an #openacces, #opensource #python module to derive metallicity AND ITS UNCERTAINTY from HII region strong lines https://github.com/nyusngroup/pyMCZ Bianco+16 Astronomy&Computing Analytic 12+log(O/H) Resampling 12+log(O/H) Residuals pyMCZ: an #openacces #opensource #python module to derive metallicity and its uncertainty from HII region strong lines v2.0 which includes treatment of upper limits
federica bianco, UDel | fedhere Motivation Data & Method Results M-Z RELATION: Ic ~ SDSS Ic-BL ~ SDSS SN-GRB ~ SDSS (!!) 1-D test: compare the linear fits -> within uncertainty 2-D test (in limited M range): is there anything intrinsic about the M − Z relation of SN-GRB hosts, or are they similar to the SDSS galaxies just losing the ability to produce GRBs at a certain Z threshold cross-match test (Roosland 2015) measures Mahalanobis distance between points-> within uncertainty
federica bianco, UDel | fedhere Motivation Data & Method Results Conclusions 1. SN Ic-BL and SN-GRB prefer (statistically) similar low Z environments (this work) 2. Barnes+2017 (w FBB & Modjaz): perform an end-to-end simulation of SN- GRBs via state- of-the-art hydrodynamic and spectral synthesis simulations and produces a SN-BL lightcurve 3. Modjaz, Liu, Bianco. Graur 2016: SNe Ic-bl w/o GRBs have lower velocities and less broadened lines than SNe-GRBs We propose: - SN-Ic do not produce jets (as claimed in Sobacchi+2017) - Both Ic-BL and SN-GRB produce jet. Jets are choked in Ic-BL Limits to the study: - Sample size (especially SN-GRB and complete metallicity samples) - degeneracy in parameters that complicates interpretation
federica bianco, UDel | fedhere Motivation Data & Method Results metallicities, SFRs and M∗s of our PTF SN Ic-bl hosts are statistically comparable to those of SN-GRBs, but significantly lower than those of the PTF SNe Ic. The mass-metallicity relations as defined by the SNe Ic-bl and SN-GRBs are not significantly different from the same relations as defined by the SDSS galaxies, in contrast to claims by earlier works. Our findings point towards low metallicity as a crucial ingredient for SN Ic- bl and SN-GRB production since we are able to break the degeneracy between high SFR and low metallicity. We suggest that the PTF SNe Ic-bl may have produced jets that were choked inside the star or were able break out of the star as GRBs that either were off-axis GRBs or low-luminosity radio-quiet on-axis GRBs.