Probing type Ia supernova properties using bolometric light curves from the Carnegie Supernova Project and the CfA Supernova Group. (arXiv:1811.08969v1 [astro-ph.HE])

Probing type Ia supernova properties using bolometric light curves from the Carnegie Supernova Project and the CfA Supernova Group. (arXiv:1811.08969v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Scalzo_R/0/1/0/all/0/1">Richard A. Scalzo</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Parent_E/0/1/0/all/0/1">Emilie Parent</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Burns_C/0/1/0/all/0/1">Christopher Burns</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Childress_M/0/1/0/all/0/1">Michael J. Childress</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tucker_B/0/1/0/all/0/1">Brad E. Tucker</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Brown_P/0/1/0/all/0/1">Peter J. Brown</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Contreras_C/0/1/0/all/0/1">Carlos Contreras</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hsiao_E/0/1/0/all/0/1">Eric Hsiao</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Krisciunas_K/0/1/0/all/0/1">Kevin Krisciunas</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Morrell_N/0/1/0/all/0/1">Nidia Morrell</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Phillips_M/0/1/0/all/0/1">Mark M. Phillips</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Piro_A/0/1/0/all/0/1">Anthony L. Piro</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stritzinger_M/0/1/0/all/0/1">Maximilian Stritzinger</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Suntzeff_N/0/1/0/all/0/1">Nicholas Suntzeff</a>

We present bolometric light curves constructed from multi-wavelength
photometry of Type Ia supernovae (SNe Ia) from the Carnegie Supernova Project
and the CfA Supernova Group, using near-infrared observations to provide robust
constraints on host galaxy dust extinction. This set of light curves form a
well-measured reference set for comparison with theoretical models. Ejected
mass and synthesized $^{56}$Ni mass are inferred for each SN Ia from its
bolometric light curve using a semi-analytic Bayesian light curve model, and
fitting formulae provided in terms of light curve width parameters from the
SALT2 and SNooPy light curve fitters. A weak bolometric width-luminosity
relation is confirmed, along with a correlation between ejected mass and the
bolometric light curve width. SNe Ia likely to have sub-Chandrasekhar ejected
masses belong preferentially to the broad-line and cool-photosphere
spectroscopic subtypes, and have higher photospheric velocities and populate
older, higher-mass host galaxies than SNe Ia consistent with Chandrasekhar-mass
explosions. Two peculiar events, SN 2006bt and SN 2006ot, have normal peak
luminosities but appear to have super-Chandrasekhar ejected masses.

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