title: Evidence from stable isotopes and10Be for solar system formation triggered by a low-mass supernova.
abstract: About 4.6 billion years ago, some event disturbed a cloud of gas and dust, triggering the gravitational collapse that led to the formation of the solar system. A core-collapse supernova, whose shock wave is capable of compressing such a cloud, is an obvious candidate for the initiating event. This hypothesis can be tested because supernovae also produce telltale patterns of short-lived radionuclides, which would be preserved today as isotopic anomalies. Previous studies of the forensic evidence have been inconclusive, finding a pattern of isotopes differing from that produced in conventional supernova models. Here we argue that these difficulties either do not arise or are mitigated if the initiating supernova was a special type, low in mass and explosion energy. Key to our conclusion is the demonstration that short-lived10Be can be readily synthesized in such supernovae by neutrino interactions, while anomalies in stable isotopes are suppressed.
authors.affiliation: School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors.forename: Projjwal
authors.initials: P
authors.lastname: Banerjee
authors.affiliation: School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
authors.forename: Yong-Zhong
authors.initials: YZ
authors.lastname: Qian
authors.affiliation: Monash Centre for Astrophysics, School of Physics and Astronomy, Monash University, Melbourne, Victoria 3800, Australia.|Center for Nuclear Astrophysics, Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
authors.forename: Alexander
authors.initials: A
authors.lastname: Heger
authors.affiliation: Department of Physics, University of California, and Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: W C
authors.initials: WC
authors.lastname: Haxton