The First Stellar Explosions pair production supernova model light curves and spectra

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The First Stellar Explosionspair production
supernova model light curves and spectra

• Daniel Kasen

Daniel Kasen, w/ Alex Heger, Stan Woosley
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pair-production supernova models
Initial mass range 140-260
Msun 56Ni production 0-50 Msun
Mej 85 Msun 56Ni 0.01 Msun E 6x1051 ergs
Mej 175 Msun 56Ni 25 Msun E 60x1052 ergs
250 Msun
150 Msun
he120
H
H
Ni
Mej 130 Msun 56Ni 40 Msun E 80x1052 ergs
Mej 70 Msun 56Ni 0.01 Msun E 8x1051 ergs
250 Msun
150 Msun
He
Si
He
Heger and Woosley 2002
Ni
Si
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monte carlo radiative transfer
3-dimensional,
time-dependent, multi-group, with non-LTE solver

• Energy Sources
• 1. Thermal energy
• tloss Ro/vexp
• 2. Radioactivity
• Lrad mass(56Ni)
• 3. Circumstellar interaction

SEDONA code
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V-band light curves
Type Ia SN He M 120, Ni 25 H M 250, Ni
25 H M 150 Ni 0.07
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optical spectra at day 100
expansion velocities 5000 km/s (moderate to low)
He250 Type Ic
H150 Type II
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spectral indicators of metalicity
model H150 at day 100, vary metalicity
zero x solar
10-4 x solar
10-2 x solar
1 x solar
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light curve as a function of redshift
model H250 (time dilation not included)
(see also Scannapieco et al., 2003)
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SN2006gy, the brightest observed SN
compared to pair production models
Type Ia SN He M 120, Ni 25 H M 250, Ni
25 H M 150 Ni 0.07
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SN2006gy, the brightest observed SN
compared to less massive (artificially scaled
down) models