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Most types of supernovae (SNe) have yet to be connected with their progenitorstellar systems. Here, we reanalyze the 10-year SN sample collected during1998-2008 by the Lick Observatory Supernova Search (LOSS) in order to constrainthe progenitors of SNe Ia and stripped-envelope SNe (SE SNe, i.e., SNe~IIb, Ib,Ic, and broad-lined Ic). We matched the LOSS galaxy sample with spectroscopyfrom the Sloan Digital Sky Survey and measured SN rates as a function of galaxystellar mass, specific star formation rate, and oxygen abundance (metallicity).We find significant correlations between the SN rates and all three galaxyproperties. The SN Ia correlations are consistent with other measurements, aswell as with our previous explanation of these measurements in the form of acombination of the SN Ia delay-time distribution and the correlation betweengalaxy mass and age. The ratio between the SE SN and SN II rates declinessignificantly in low-mass galaxies. This rules out single stars as SE~SNprogenitors, and is consistent with predictions from binary-system progenitormodels. Using well-known galaxy scaling relations, any correlation between therates and one of the galaxy properties examined here can be expressed as acorrelation with the other two. These redundant correlations preclude us fromestablishing causality - that is, from ascertaining which of the galaxyproperties (or their combination) is the physical driver for the differencebetween the SE SN and SN II rates. We outline several methods that have thepotential to overcome this problem in future works.

astrophysical journal/the astrophysical journal

LOSS Revisited - I: Unraveling correlations between supernova rates and  galaxy properties, as measured in a reanalysis of the Lick Observatory  Supernova Search